35results about How to "Increase fixed range" patented technology

The invention relates to a fracture external fixing frame and particularly relates to a fracture external fixing frame with an adjustable axial pressure among bone blocks, belonging to external fixation instruments for fracture treatment. According to the fracture external fixing frame, the problem that the space among fractured blocks usually cannot be properly pressurized when fracture is steadily fixed by virtue of an existing fixing instrument is solved. The fracture external fixing frame is characterized in that a frame rod is segmented, and one or two ends of each segment is / are providedwith plugs or interfaces; spring devices (including one or more of metal springs, gas springs and elastic matter pads) are arranged in the plugs or the interfaces and are spliced to form connecting devices for adjusting the axial pressure among the bone blocks, and the frame rod segments can form an integrated combined frame rod by the connecting devices. By adjusting the elastic forces of the whole spring devices, the action forces of the connecting devices on two frame rod segments on two sides in the long-axis direction are changed, and therefore, the axial pressure among the bone blocks is adjusted. The fracture external fixing frame is applied to fracture fixation, and when the fracture is steadily fixed, excessive stress shielding can be avoided, and the axial pressure among the bone blocks can be flexibly quantized, adjusted and controlled into a proper level required by fracture healing, so that fracture healing is promoted.

The invention provides a dustproof protection device for a rare earth permanent magnet synchronous motor. The dustproof protection device includes a motor body, wherein a dustproof protection mechanism is fixed on the motor body; a support mechanism is welded and fixed at the lower end of the motor body; the support mechanism is located under the dustproof protection mechanism; the dustproof protection mechanism includes upper snap rings, lower snap rings, a connection strip block, micro fans, an ear plate, an arc guide rail, a dustproof net 1, elastic rubber sleeves, threaded rods, nuts, a handlebar and a dustproof net 2; and the support mechanism comprises a hollow plate, a base, an open slot 1, a connection plate, an open slot 2, limiting blocks, a support plate, a telescoping plate, alimiting groove opening and a through hole. Compared with the prior art, the dustproof protection device for a rare earth permanent magnet synchronous motor has the following advantages: achieving theaim of dustproof and shock absorbing protection, improving the use effect, facilitating carrying, improving the heat dissipation effect, achieving the aim of height adjustment, and expanding the fixed range so as to improve the fixing stability.

The invention belongs to the technical field of furniture production, and particularly relates to a nailing device used for furniture production. By the adoption of the nailing device used for furniture production, the problems that an existing workbench used for furniture production is constant in size, and the fixing range of fixing assemblies cannot be adjusted as required are solved. Accordingto the scheme, the nailing device used for furniture production comprises a workbench, wherein grooves are formed in the outer walls of the two sides of the workbench at equal intervals, second hydraulic rods are arranged on the inner walls of the grooves, the multiple second hydraulic rods are connected with a synchronous hydraulic system, and a fixing plate is arranged at the other ends of themultiple second hydraulic rods on the same size. According to the nailing device used for furniture production, the grooves, the second hydraulic rods and the fixing plates are arranged, and fixing assemblies are installed on the fixing plates; when furniture is fixed, if the size of the furniture exceeds the surface area of the workbench, the second hydraulic rods are adjusted to drive the fixingplates to move to increase the distance between the fixing assemblies, so that the fixing range of the fixing assemblies is widened, and the practical value of the nailing device is improved.

The invention discloses a piezoelectric material electric polarization clamping device. The piezoelectric material electric polarization clamping device is characterized in that a clamping and positioning mechanism can clamp and position a plurality of piezoelectric materials to be electrically polarized at the same time, a clamp supporting, positioning and locking mechanism can lock and positionthe clamping and positioning mechanism so as to replace the clamping and positioning mechanism, the piezoelectric materials to be electrically polarized are loaded, unloaded and replaced at the same time, the loading and unloading efficiency can be effectively improved, the electric polarization efficiency is improved. According to the piezoelectric material electric polarization clamping device,the piezoelectric materials can be clamped by another external clamping and positioning mechanism during electric polarization, and the use convenience is improved; the clamp supporting, positioning and locking mechanism is arranged, the clamping and positioning mechanism is supported through two supporting plates, the distance between the two supporting plates is adjusted through a rotary knob, afixing device is arranged, the clamping and positioning mechanism is pressed and fixed through a pressing device of the fixing device by rotating the rotary knob, the fixing range is large, and the operation is simple.

The invention discloses a multi-elevator and vertical lift three-dimensional parking garage, which belongs to the technical field of a parking lot. The parking garage includes a base, an elevator guide rail group, elevator guide rail seats, first guide rails, second guide rails, clamping mechanisms, annular parking spots and vehicle body adjustment devices; and the elevator guide rail group is disposed on the base, the base is connected with the elevator guide rail group in a shaft manner, the multiple elevator guide rail seats that can slide up and down are disposed on the elevator guide railgroup, the elevator guide rail seats are hinged to the first guide rails, the first guide rails are slidingly hinged to the second guide rails, the second guide rails are slidingly connected with theclamping mechanisms, the annular parking spots are disposed on the periphery of the elevator guide rail group in a circular manner, the upper end of the elevator guide rail group is connected to thetop of the annular parking spots in the shaft manner, and each parking space at entrance and exit layers of the annular parking spots is equipped with the vehicle body adjustment device. In the multi-elevator and vertical lift three-dimensional parking garage, through coordinated operation of multiple elevators, space of the parking garage is reduced, the efficiency of parking and picking up of vehicles is improved, a contradiction between the efficiency of parking and picking up of the vehicles and the number of parking spaces is solved, and smart city platform management is performed on thebasis of automatic operation.

The invention discloses a notching-type automobile drum brake lining. The notching-type automobile drum brake lining comprises a lining body, fixing plates, screw mounting bases and a drum brake. A lining movable end is arranged at the left side of the lining body, and a lining fixed end is arranged at the right side of the lining body. A lining friction face is arranged on the upper side surfaceof the lining body, and a lining mounting face is arranged on the lower side surface of the lining body. The fixing plates are arranged on the inner side surface of the lining body. Heat radiating grooves are formed between lining mounting plates of the fixing plates, and the lining mounting plates are distributed in a hexagon shape. The fixation range is wide, the number of the heat radiating grooves is large, the integral strength of the lining can be guaranteed and meanwhile the heat radiating effect of the lining is improved. In addition, the lining movable end is set to be thick, due to the facts that the movable end is pushed by a brake cylinder and the friction force between the movable end and the drum brake is large, the abrasion speed is high compared with the other end of the lining, the thick lining movable end can improve the braking effect of the lining at the later period, and the service life of the lining can be prolonged.

The invention discloses a blade surface rust stain treatment device for centrifugal pump maintaining. The device comprises a treatment shell body, the inner wall of the bottom of the treatment shell body is rotatably connected with a rotating shaft, a thread hole is formed in the outer wall of the top of the rotating shaft, the inner wall of the thread hole is rotatably connected with a thread rodthrough a thread, a round block is mounted on the outer wall of the top of the thread rod, a round rod is arranged on the outer wall of the top of the round block, an extrusion ring is rotatably connected to the circumference outer wall of the round rod through a thread, the same screw is rotatably connected to the inner walls of the two sides of the treatment shell body, the circumference outerwall of the screw is rotatably connected with a sliding block through a thread, the rotating shaft, the thread rod, the round block and the extrusion ring on the round rod are arranged, before use, the round block matched with a blade is selected, and then is fixed to the rotating shaft, the blade is inserted into the round rod, the extrusion ring is used for fixing, the centrifugal pump blade canbe rapidly fixed, the fixing range can be widened, use by a worker is facilitated, and the subsequent blade rust stain treatment is facilitated.

The invention discloses a quality inspection detection device for the size of an inner cavity of a flywheel casing. The quality inspection detection device comprises a base, a translation mechanism, a combined clamping mechanism and a graduated scale. The device has the beneficial effects that by arranging the lifting mechanism, not only can the measurement height of the graduated scale be adjusted, but also the depth of the inner cavity of the flywheel shell can be measured by adjusting the lifting of the graduated scale, so that the quality inspection efficiency is improved; when the flywheel shell is clamped, one side of the flywheel shell can be placed in a clamping groove of an L-shaped fixing block, then an adjusting screw rod on the adjacent side is rotated, the adjusting screw rod drives a limiting plate to get close to the L-shaped fixing block and gradually drives an abutting block to extrude a spring, and the flywheel shell is fixed through the elastic force effect of the spring; flywheel housings with different signals can be fixed, the fixing range of the flywheel housings can be expanded, the transverse size of the flywheel housing can be read by attaching the graduated scales on the two sides to the inner cavity wall of the flywheel housing and through the positions of the scale marks where the connecting rods on the two sides are located, and the testing accuracy is high.

The invention discloses a portable distance measuring device for engineering supervision. The portable distance measuring device for engineering supervision comprises an annular frame; a measuring device which is connected with the annular frame and is used for directional measurement; at least three groups of stabilizing assemblies which are arranged outside the measuring device and are used for fixing and stabilizing the measuring device, wherein the measuring device comprises at least three groups of adjusting assemblies, and the adjusting assemblies are arranged outside the annular frame and are used for adjusting and connecting external assemblies; and a distance measuring assembly which is connected with the adjusting assemblies and is used for directional distance measurement. The portable distance measuring device has the advantages that the device is reasonable in design, multi-angle fixing of the device can be achieved through the external fixing arm assembly, the fixing range is large, the internal adjusting assemblies are matched with the distance measuring assembly, the distance measuring range is further widened, the outer annular frame facilitates overall taking of the device, the defects of an existing device are overcome, and the device has high practicability and market prospects and is suitable for large-scale application and popularization.

The invention discloses a steel structure building welding main beam monitoring device, and relates to the technical field of monitoring. The steel structure building welding main beam monitoring device comprises a steel structure body and two fixing mechanisms, each fixing mechanism comprises a supporting shell, the inner walls of the two ends of each supporting shell are rotatably connected with a bidirectional screw rod, and the two ends of the circumferential outer wall of the bidirectional screw rod are rotatably connected with sliding blocks through threads; and a first fixing shell and a second fixing shell are installed on the outer walls of one sides of the two supporting shells correspondingly, and a monitoring mechanism is arranged at one end of the second fixing shell. The fixing mechanism is arranged, a rotating block is rotated to drive a two-way lead screw to rotate so as to drive fixing plates on the two sliding blocks to move in opposite directions, due to fixing rods, buffer springs and extrusion arc-shaped blocks on the fixing plates, the device can be rapidly fixed to a steel structure body, and the fixing rods can move front and back. Therefore, the supporting shell can be fixed to the inner side or the outer side of the steel structure body, and the fixing range is widened.

The invention discloses a gearbox shaft rotating speed position sensor fixing device, which relates to the technical field of gearboxes, and solves the problem that a sensor fixing device is poor in compatibility with gearboxes of different sizes. The gearbox shaft rotating speed position sensor fixing device comprises a base. The base comprises a buffer column and a connecting block, and the top of the base is rotationally connected with the connecting block; the connecting block is rotationally connected with the buffer column; the top of the base is slidably connected with a shear fork frame; the shear fork frame comprises lower supporting strips, and the bottom end of the shear fork frame is connected with one lower supporting strip in a sliding mode; the top of the shear fork frame is slidably connected with a fixing seat; the fixing seat comprises a sliding seat, a fixing column and a fixing strip, and the sliding seat is slidably connected to the middle of the fixing seat; and the top of the fixing seat is slidably connected with a fixing column. The compatibility of different gearbox fixing hole sites is enhanced through the slidable fixing strips and the supporting seats.

The invention discloses a piezoelectric material electrode polarization clamping device. The clamping and positioning mechanism of the invention can simultaneously clamp and position multiple piezoelectric materials to be polarized, and the clamp support positioning and locking mechanism can clamp and position The positioning mechanism is locked and positioned so that the clamping and positioning mechanism can be replaced, so that multiple piezoelectric materials to be polarized can be loaded, unloaded and replaced at the same time, which can effectively improve the efficiency of loading and unloading, and improve the efficiency of electric polarization. The present invention can be used in During electric polarization, another external clamping and positioning mechanism is used to clamp the piezoelectric material to improve the convenience of use; the present invention supports the positioning and locking mechanism by setting the clamp, and uses two support plates to support the clamping and positioning mechanism. The distance between the two support plates is adjusted by rotating the knob, and a fixing device is provided, and the pressing device of the fixing device can press and fix the clamping and positioning mechanism by rotating the knob, the fixing range is large, and the operation is simple.

The invention discloses a driving speed change device for agricultural machinery. The driving speed change device comprises a push rod, a receiving barrel, a harvesting head, a guide revolving body and a boosting wheel, wherein the push rod is welded on the outer surface of a bottom fixed plate; the receiving barrel is arranged on the upper surface of the bottom fixed plate; the guide revolving body is driven to move by a driving transmission box in order to harvest external Chinese chives; a rotary box body inside the driving transmission box is driven to rotate together; the fixing range ofan extension main core is expanded by a surface core; and under the external stress, an internal inclination fixed core fixed by a fixing ball extends by an inclination angle, and an inclination sidedrives an ejector headers against the inclination fixed core at certain hardness, so that an outer layer is subjected to certain inclination guide fixing. Contact force is uniformly born by a spreading side and a protection rubber body to drive a middle fixed column to move, so that the collision force is variable during internal driving speed change. The buffering depth is adjusted according to the collision distance and the force, so that deformation and loosening after long-time collision and contact are prevented.

The invention discloses a village residential area land intensive utilization model, which is characterized in that a scouring mechanism, an anti-blocking mechanism and a seat assembly are respectively arranged on a sand table device of the village residential area intensive utilization model, and the three mechanisms are independently used or cooperatively used, so that the fatigue of a user caused by standing for use for a long time can be solved; in addition, the upper portion of the sand table is rotatable, a user can observe in all directions only by rotating the sand table, in addition, a flushing mechanism and an anti-blocking mechanism are arranged above the sand table, when building points above the device need to be replaced, sand above the device can be loosened through the flushing mechanism, it is avoided that caking is difficult to clean, and the device is convenient to use. An anti-blocking mechanism at the lower part can seep excessive water at the lower part, so that the incorrect proportion of water to sand is prevented, and the whole sand table is provided with a rotatable sand table bottom plate at the upper part and a double-layer fixed inclined plane frame capable of adjusting the height of the telescopic main shaft at the lower part; and the problem of rollover caused by unequal weight above when the position height of the sand table bottom plate is adjusted is avoided.

The invention provides a dustproof protection device for a rare earth permanent magnet synchronous motor. The dustproof protection device includes a motor body, wherein a dustproof protection mechanism is fixed on the motor body; a support mechanism is welded and fixed at the lower end of the motor body; the support mechanism is located under the dustproof protection mechanism; the dustproof protection mechanism includes upper snap rings, lower snap rings, a connection strip block, micro fans, an ear plate, an arc guide rail, a dustproof net 1, elastic rubber sleeves, threaded rods, nuts, a handlebar and a dustproof net 2; and the support mechanism comprises a hollow plate, a base, an open slot 1, a connection plate, an open slot 2, limiting blocks, a support plate, a telescoping plate, alimiting groove opening and a through hole. Compared with the prior art, the dustproof protection device for a rare earth permanent magnet synchronous motor has the following advantages: achieving theaim of dustproof and shock absorbing protection, improving the use effect, facilitating carrying, improving the heat dissipation effect, achieving the aim of height adjustment, and expanding the fixed range so as to improve the fixing stability.

The invention provides a power module signal terminal. A power module comprises a plastic package housing. A signal terminal comprises a first fixing part, wherein the first fixing part is wrapped bythe plastic package housing; a second fixing part located on the first fixing part, wherein the length of the cross section of the second fixing part is smaller than that of the cross section of the first fixing part; a platform part located on one side of the first fixing part and one side of the second fixing part; and a signal transceiving part located on the platform part, wherein the signal transceiving part is used for connecting internal signals of the power module. According to the invention, the contact area with the plastic package housing can be increased, so that the fixing range can be increased, and the fixing stability can be improved; and in addition, the bonding failure caused by the movement of the fixing position of the power module in an extreme vibration environment can be avoided.

The invention discloses a novel quick locking water pump clamp, and relates to the technical field of water pump clamps. The novel quick locking water pump clamp comprises a water pump clamp body, a clamping piece and a locking piece, the water pump clamp body comprises a left clamp body and a right clamp body, the left clamp body is located on the left rear side of the right clamp body, the clamping piece is located at the upper portion of the interior of the left clamp body, and the locking piece is located at the upper middle portion of the front face of the right clamp body. An extension rod integrated with the left clamp body is welded to the top of the left clamp body, the surface of the extension rod is attached to the rear face of the right clamp body, front-back corresponding round holes are formed in the connecting positions of the surface of the extension rod and the surface of the right clamp body, and a rotating rod enabling the right clamp body and the extension rod to be rotationally connected penetrates through the round holes. The novel quick locking water pump clamp has the beneficial effects that on the premise that the locking effect is guaranteed, the locking structure is simplified, disassembly, assembly and maintenance are convenient, abrasion is not likely to happen, the stability after a jaw is adjusted is improved, and the rotating rod is prevented from sliding up and down.

The invention belongs to the technical field of digital media installation, particularly relates to a digital media suspension device. In order to solve the problems that when an existing digital media is suspended, the digital media is generally singly suspended on a lifting ring through a hook, in the suspension mode, the suspended digital media is likely to be in a suspended state, when the digital media is slightly touched, the digital media is likely to shift in position, so that the digital media is in an unstable state after being suspended, the following scheme is provided presently. According to the scheme, the digital media suspension device comprises two limiting frames and a sliding groove, connecting plates are fixedly connected to the outer walls of the same sides of the twolimiting frames, hydraulic cylinders are fixedly connected to the outer walls of the two connecting plates, the two hydraulic cylinders are connected with a synchronization hydraulic system, and the other ends of the two hydraulic cylinders are fixedly connected with air plates. According to the digital media suspension device, flow guide plates and a flow dividing pipe are arranged, during vacuumizing operation, the flow guide plates disperse suction force to all positions of flow dividing holes so that the interiors of all the suction cups can be vacuumized, and the vacuumizing effect is improved.

The invention provides a building automation engineering practical training device. The device comprises a fixing bolt, a transverse grid, a positioning frame, a through hole, a connecting threaded rod, a nut seat and a positioning groove. Fixing bolts are installed on the upper side of the right end face of the fixing frame. A positioning frame is attached to the inner wall of the fixing frame. Atransverse grid is attached to the upper side of the inner wall of the positioning frame. A plurality of groups of through holes are formed in the transverse grid. A connecting threaded rod is mounted on the left end surface of the transverse grid. The building automation engineering practical training device solves the problem that an original building automation engineering practical training device is inconvenient to adjust and position during use, and is reasonable in structure, convenient for students to adjust and position during practical training, simple in structure and high in practicability.

The invention discloses a cooling cover used before spinning of a hub. The cooling cover comprises a machine body; a support which is of a C-shaped structure is disposed at the top of the machine body; the two ends of the support are fixed to the edge of the top end of a sliding rail; the sliding rail is fixed to the middle of the surface of the support; a clamping part which can slide up and downis disposed on the surface of the sliding rail; a water outflowing disc is fixed to the surface of the clamping part; a cooling water tank is placed at the bottom end of the interior of the machine body; and a cooling water pipe is connected between the water outflowing disc and the cooling water tank. By means of the water outflowing disc, during machining of the hub, only the middle of the hubcan be cooled, the portion, which needs spinning, of the edge of the hub is not cooled, thus later-stage machining is guaranteed, the mode is simpler than an existing cooling mode of directly placingin water, meanwhile the phenomenon of high spinning difficulty does not occur, and the phenomenon of deformation of the middle of the hub is avoided.

The invention discloses a convenient-to-use fiber exchange box for communication engineering. The convenient-to-use fiber exchange box structurally comprises a box body; the box body is provided withventilation plates, a top plate, a base plate, a separation plate, a first box door, a second box door, a third box door and a fourth box door; the ventilation plates are fixedly connected to the leftside and right side of the box body; the top plate is fixedly connected to the top of the box body; the base plate is fixedly connected at the bottom of the box body; the separation plate is fixedlyconnected with the middle of the box body; the first box door is movably connected at the left side of the box body; the second box door is movably connected at the upper right part of the box body; the third box door is movably connected at the middle of the right side of the box body; and the fourth box door is movably connected at the lower right part of the box body. With the convenient-to-usefiber exchange box for communication engineering of the invention adopted, outside dust can be effectively prevented from entering the exchange box; rain water in heavy rain weather can be preventedfrom entering the exchange box; and the stability of components inside the exchange box in a use process can be improved.

The invention discloses a steel structure building welding main girder monitoring device, which relates to the technical field of monitoring, and includes a steel structure body and two fixing mechanisms, the fixing mechanism includes a supporting shell, and the inner walls at both ends of the supporting shell are rotatably connected with two-way Screw rod, both ends of the outer wall of the two-way screw rod are connected with sliding blocks through threaded rotation, and the outer walls of one side of the two support shells are respectively equipped with a first fixed shell and a second fixed shell, and the second fixed shell One end of the housing is provided with a monitoring mechanism. The present invention is provided with a fixing mechanism, and the rotation of the rotating block can drive the two-way screw to rotate, thereby driving the fixed plates on the two sliding blocks to move toward each other. Due to the fixed rod, the buffer spring and the extrusion arc block on the fixed plate, it can quickly It is fixed on the steel structure body, and the fixing rod can move back and forth, so the supporting shell can be fixed on the inner side or the outer side of the steel structure body, which improves the fixing range.

The invention discloses a strength detection device for organic glass processing. The strength detection device comprises a fixed shell; a first limiting groove is formed in the inner wall of the bottom of the fixed shell; the inner wall of the first limiting groove is slidably connected with two air inlet shells. Suction cups distributed at equal intervals are inserted into the outer walls of thetops of the air inlet shells. A first supporting column is installed on one side of the outer wall of the top of the fixed shell, a first installation groove is formed in the outer wall of one side of the first supporting column, the inner walls of the top and the bottom of the first installation groove are rotationally connected with the same lead screw, the circumferential outer wall of the lead screw is rotationally connected with a sliding block, and a second supporting column is installed on the outer wall of the top of the fixed shell. According to the device, through the air inlet shells arranged on the first limiting groove, the position can be changed according to to-be-detected organic glass of different sizes, the fixing range of the device is enlarged, then the organic glass is placed on the suction cups, a first air suction pump is started, air is fed into the organic glass through an air inlet hose to be fixed, and the fixing efficiency is improved.

The invention relates to the field of medical instruments, and in particular relates to a novel remaining needle which comprises an adapter assembly, the adapter assembly comprises a first connector and a sleeve arranged on the first connector, a needle core is arranged in the sleeve in a sleeved mode, one end of the needle core is a sharp part, the sharp part extends out of the sleeve, the other end of the needle core is connected with a needle plug, when the needle plug drives the needle core to be pulled out of the first connector, the first connector is used for communicating the sleeve with an infusion tube and fixing the sleeve to the body of a patient, the side, attached to the skin of the body surface of the patient, of the first connector is a press-fit part, the press-fit part is a flat surface, or a curved surface which matches the skin contact position of the patient. According to the novel remaining needle, the risk of sliding displacement of a connecting base in the infusion process is greatly reduced, the infusion safety is improved, and meanwhile the risk that the skin of the patient is injured due to back-and-forth sliding friction of the skin of the first connecting base is further reduced.

The invention discloses a method for fixing soil heavy metals so as to protect groundwater; a potassium hydroxide (KOH) fixing agent is adopted for applying on the surface of heavy metal polluted soil, vertical permeability distribution is achieved through water irrigation and natural diffusion, and thus a vertical alkaline fixing band is formed or an alkaline fixing band is formed at the lower layer of the soil to fix the soil heavy metals, so as to achieve the purpose of protecting the groundwater. The potassium hydroxide (KOH) fixing band technology is used for protecting the groundwater, overcomes the problems of slow lime diffusion and small fixing scope, has obvious economic advantages compared with a groundwater pumping-out treatment technology, and is a high-efficiency and low-cost treatment technology in the acidic polluted soil.

The invention discloses a covering net suitable for rock-soil slope protection and capable of preventing a rock body from falling off, and relates to the technical field of engineering slope protection. The problems that a protective net needs to be manually and visually detected, a fixed marker is lacked, and the observation difficulty is high are solved. The covering net suitable for rock-soil slope protection and capable of preventing the rock body from falling off comprises a covering base net; the covering base net is a fine flexible net formed by weaving fiber ropes, and a fixing pipe is fixedly connected to the middle of the covering base net in a penetrating mode. The fixed pipe comprises reinforcing ribs, a connecting column and a connecting pipe; the middle part of the fixed pipe is fixedly connected to the connecting pipe; the connecting column is connected to the middle of the connecting pipe in a nested and sliding mode; the tail end of the connecting column is fixedly connected to the reinforcing ribs; the reinforcing ribs are fixedly connected to the covering base net; and a fixing column is connected to the middle of the fixing pipe in a penetrating and engaged mode. According to the covering net suitable for rock-soil slope protection and capable of preventing the rock body from falling off, a shear fork frame expands outwards, a closing plate swings towards the center in a closed mode, and therefore people can observe the condition of a mountain conveniently and give an early warning in time.

The invention discloses a device for fixing a cabinet. The device comprises a fixing plate with a hollow inner cavity. A spring is fixedly connected to the inner cavity of the fixing plate. The sidewall on one side of the fixing plate is successively connected with a plurality of concave sliding chutes 1 in the vertical direction. The inner wall of each concave sliding chute 1 is successively sleeved with a first convex slide block and a second convex slide block in the horizontal direction. The sides, away from the concave sliding chutes 1, of the first convex slide block and the second convex slide block are connected with a first concave fixing block and a second concave fixing block respectively. Wear resistance layers are disposed at the grooves of the first concave fixing block and the second concave fixing block. Telescopic plates 1 are installed at the middles of the first concave fixing block and the second concave fixing block. Through holes 1 are disposed at corresponding positions of the first concave fixing block and the second concave fixing block. The device for fixing a cabinet is simple in structure and convenient to operate, and can conveniently fix and disassemble the cabinet.

The invention discloses a multi-elevator vertical lifting three-dimensional parking lot, which belongs to the technical field of parking lots; it includes a base, an elevator guide rail group, an elevator guide rail seat, a first guide rail, a second guide rail, a clamping mechanism, a ring parking space and body alignment device; the base is provided with an elevator guide rail group, the base is connected with the shaft system of the elevator guide rail group, and the elevator guide rail group is provided with a plurality of elevator guide rail seats that can slide up and down, the elevator guide rail seat is hinged with the first guide rail, and the first guide rail and the second The guide rail is slidingly hinged, the second guide rail is slidingly connected with the clamping mechanism, and the outer ring of the elevator guide rail group is provided with a ring-shaped parking space. The upper end of the elevator guide rail group is connected with the top shaft of the ring-shaped parking space. There is a vehicle body adjustment device; in the present invention, through the coordinated operation of multiple elevators, the space of the parking lot is reduced, the efficiency of car access is improved, and the contradiction between the efficiency of car access and the number of parking spaces is solved. Manage smart city platforms.