141results about How to "High maintenance costs" patented technology

Provided is an optimum stroke process suitable for a super-low permeability reservoir digital oil pumping unit, belonging to the technical field of oil field digitalization. The process includes that the oil pumping unit stroke is determined and adjusted; and the optimum stroke is automatically found based on the production capacity of an oil well under the condition of guaranteeing the production capacity, the stroke is adjusted to the minimum to achieve the optimum work state, and the self-adjustment and the remote manual adjustment can be realized. The process is particularly suitable for the condition of a super-low permeability oil field low-production well, the low-production well can be continuously pumped, the pump inspection period is prolonged, the service lives of a sucker rod and the oil pumping unit are prolonged, the management is convenient, and the maintenance cost is low. The process can be applied to various types of oil pumping units, such as a compound oil pumping unit or a camber beam variable torque oil pumping unit, the low-stroke operation can be realized, the oil pumping unit stroke is changed by adjusting the variable frequency, the pump fullness and the approximate production capacity are calculated to make the production capacity the largest, and meanwhile, energy can be saved.

The invention discloses a continuous technology for producing polycarboxylate superplasticizer monomer polyether through a one-step method. The technology includes the steps that with unsaturated alcohol or unsaturated alcohol ether or unsaturated amine as an initiator, epoxide polymerization is performed in a segmented mode in multiple reaction kettles at certain temperature and pressure under the action of a catalyst, and continuous synthesis is performed to obtain the product. The technology has the advantages that for synthesis of the polycarboxylate superplasticizer monomer polyether, by performing epoxide polymerization in the segmented mode in the multiple reaction kettles, the problem that one-step method production of high-molecular-weight products is difficult is solved; the continuous production technology thoroughly changes single intermittent kettle type production of such products, and continuous production improves the product production efficiency and increases the product yield; as the mode of using the special kettles for special purposes is formed, namely, each kettle is used for producing a fixed molecular structure with a fixed molecular weight of the product in a certain step, product quality stability is substantially improved, and technology and operation difficulty is lowered.

The invention provides a novel manufacturing and installing method for a cable holder. Holes are formed in the cable holder according to a certain technological standard, cable grooves, hoops, reinforcing ribs, fireproof division plates and the like can be arranged on supporting arms of the holder as needed, reserved holes are formed in the two walls of a cable trench, and then the cable holder and the walls can be assembled and disassembled fast through expansion bolts. Through material selection, premachining, accessory addition and preliminary combination of the cable holder, the installation procedure can be achieved at one step, so that the labor and the time are saved, the cost is saved, the problem that installation, maintenance, fixation, rust prevention, fire prevention and the like of an existing cable holder are difficult is solved, and the whole cable holder is stable, scientific in design, convenient to manufacture and install, safe and practical. Thus, the novel manufacturing and installing method is worthy of popularization and application.

This invention relates to bank receipt real time automatic extracting method, which comprises the following steps: a, establishing special servo fixed with operation system and recording customer receipt database; b, updating data through bank machine and other outside system; c, inputting customer information from receipt terminal and sending it to special device; d, the device inspects ad starts next step; e, checking whether there is new data; f, sending back the checking results to the display screen, if there is then selecting relative mode board to terminal; g, printing invoice at the terminal; h, user real time extracting receipt. This invention provides one system to realize bank receipt automatic extraction.

The invention discloses a molecular distillation separation method for a grease chemical product and equipment. A molecular distillation system consists of single molecular distillation equipment or multi-stage molecular distillation equipment in manners of serial connection, parallel connection or combination of serial connection and parallel connection; the multi-stage molecular distillation equipment is arranged in horizontal positions, up and down positions or combined way of horizontal positions and up and down positions; a product to be distilled is fed into the molecular distillation equipment from the top, is uniformly allocated for a first time through allocation tube holes or / and groove plates, is uniformly distributed to the upper part of a heating surface of the equipment to form a uniform film flowing from top to bottom, and is at least uniformly allocated further for a second time through an allocation groove plate or screening holes, and is uniformly distributed to the bottom from the heating surface of the equipment; under the action of heating and vacuum, a low-melting point oil chemical product is evaporated and recycled as a product of a first-class type; a high-melting point oil chemical product is fed to a next stage of molecular distillation; temperature and vacuum degrees of different stages of the molecular distillation equipment are determined according to low-melting point oil chemical products to be removed in equipment of a same stage, and various types of high-quality products can be prepared finally.

The invention discloses a post-tensioning prestress type self-centering steel frame structure. The post-tensioning prestress type self-centering steel frame structure comprises at least one structural unit. Each structural unit comprises two steel frame columns, a T-shaped steel beam, a self-centering connecting piece and friction energy consumption parts, wherein the T-shaped steel beam is used for connecting the upper ends of the steel frame columns, the self-centering connecting piece is located on the lower side of the T-shaped steel beam and used for connecting the steel frame columns, and the friction energy consumption parts are located on the lower portion of the self-centering connecting piece. Each self-centering connecting piece comprises an inner sleeve, an outer sleeve, end plates, pretensioning rods and connectors, wherein the inner sleeve is sleeved with the outer sleeve, the end plates are located at the two ends of the sleeves, the pretensioning rods are arranged in the inner sleeve and anchored on the end plates, and the connectors are connected with the ends of the inner sleeve. Each friction energy consumption part comprises an inner friction plate, an outer friction plate and a friction gasket, wherein the inner friction plate is connected with the inner sleeve, the outer friction plate is connected with the lower side face of the outer sleeve, the friction gasket is arranged between the inner friction plate and the outer friction plate, and the sliding direction of the inner friction plate and the sliding direction of the outer friction plate are arranged in the axial direction of the outer sleeve. Column space is kept unchanged when the columns are laterally deformed, and the strength, the rigidity and the ductility of the structure can be flexibly and independently adjusted and controlled in the design process.

The invention relates to an urban shock-resisting waterlogging-preventing rainfall flood management system, which comprises a plurality of blocks of concave green fields, a plurality of rainwater utilizing facilities, a plurality of concave rainwater parks, a plurality of concave playgrounds and an intelligent control system, and the urban shock-resisting waterlogging-preventing rainfall flood management system is characterized in that the concave green fields, the rainwater utilizing facilities, the concave rainwater parks and the concave playgrounds are communicated with one another though a water drain pipe network, the water drain pipe network is provided with a water drain pipe network liquid level meter, each concave rainwater park is internally provided with a park inner liquid level meter, each concave playground is provided with a playground inner liquid level meter, a water inlet of each concave rainwater park is provided with a park water inlet liquid level meter, a water inlet of each concave playground is provided with a play ground water inlet liquid level meter, the input end of the intelligent control system is connected with the output ends of the liquid level meters, and the output end of the intelligent control system is connected with control input ends of a water inlet / water discharging systems of the concave rain water parks and the concave playgrounds, thus an intelligent urban shock-resisting waterlogging-preventing rainfall flood management system is formed. The urban shock-resisting waterlogging-preventing rainfall flood management system has the beneficial effects that the shock can be resisted, the water logging is prevented, and the rain water is regulated, stored and discharged.

The invention discloses a method for heating a wood geothermal floor, which comprises the following steps: firstly, paving a damp-proof membrane 5 on a smooth floor; secondly, paving a heat insulation layer 4 on the damp-proof membrane 5, paving an electric heating pad 3 on the heat insulation layer 4, and paving an electromagnetic shielding layer 2 on the electric heating pad 3; and finally, paving wood floor 1 to achieve the heating of the wood geothermal floor. The invention also discloses corresponding geothermal floor. Compared with the conventional heating mode, the method has the advantages of no destruction to buildings, simple mounting, convenient use, low energy consumption and high heat utilization rate, and has good shielding effect on the electromagnetic wave radiation, an induced electric field and an induced magnetic field generated by a heating system; in the generated frequency range from 30 MHz to 1.5 GHz, the electromagnetic shielding effect (SE) can reach 30 to 60 dB; and when a double-layer electromagnetic shielding layer material of which the number is more than 60 is adopted, the value of the electromagnetic shielding effect (SE) can be more than 60 dB.

The invention relates to an intelligent control type anti-impact urban sunken playground which comprises a sunken playground. The playground is characterized in that the sunken playground is in linkage with a rainwater storage adjustment and slow drainage structure to form the anti-impact urban sunken playground, wherein the rainwater storage adjustment and slow drainage structure mainly comprises a rainwater switch well, a water inlet / outlet control valve, a switch well liquid level meter and a PLC (Programmable Logic Controller); the rainwater switch well is communicated with a municipal drainage system; the sunken playground is communicated with the rainwater switch well through the water inlet / outlet control valve; the switch well liquid level meter is mounted in the rainwater switch well and is used for measuring the water level of the rainwater switch well; a signal output end of the switch well liquid level meter is connected with a signal input end of the PLC; a control signal output end of the PLC is connected with a control input end of the water inlet / outlet control valve; and the PLC controls the on or off of the water inlet / outlet control valve according to a water level signal value from the switch well liquid level meter so as to form an intelligent control structure. The intelligent control type anti-impact urban sunken playground provided by the invention forms a rainwater utilization system skillfully combining intelligent control type urban sports, leisure and entertainment with urban drainage and disaster reduction.

Provided is a BOAF treating method for purifying the water landscape, water system and water quality in the sealed small social region and the apparatus thereof. The method substitutes a drug feeding system necessary for all of the gas flotation apparatus by a biological reacting pool, mixes the original water in the water landscape and water system in the sealed small social region with the active bio-floculation from the BOAF pool. A mixed liquid flow formed by depositing in the biochemical reacting pool for a certain period is flowing into the BOAF pool for a treatment. The water output from the BOAF pool is returned to the water landscape and water system after sterilizing by the ultraviolet sterilizer. The mixing liquid flowing into the BOAF pool obtains a separation of the water output and the active bio-floculation by the means of gas flotation. The active bio-floculation returns to the front end of the biochemical reacting pool and continues to mix with the original water for a recycle reaction. A small part of water output forms the gas dissolving water and returns to the BOAF pool to provide slight bubbles for the bio-floculation separation. The system apparatus ensures a qualified landscape water and keeps a water environment balance in the water system in the sealed small social region.

The present invention relates to a steeping device for providing a liquid mixture. The steeping device (38, 138, 238) comprises a housing (27, 127, 227) defining a steeping chamber (44, 144) adapted to contain a steeping material therein and the housing (27, 127, 227) having an outlet aperture (78, 178) allowing the withdrawal of a fluid introduced into the steeping chamber (44, 144); and a one-way flow control member allowing the introduction of the fluid into the steeping chamber (44, 144) while preventing the introduced fluid to flow out from the steeping chamber (44, 144) therethrough.

The invention discloses a post-tensioned prestressing self centering steel plate shear wall structure, which comprises at least one structural unit, wherein the structural unit comprises two steel framework posts, a T-shaped steel beam, a self centering connecting element and a steel plate shear wall, wherein the T-shaped steel beam is connected with the upper ends of the two steel framework posts, the self centering connecting element is positioned at the lower side of the T-shaped steel beam and is connected with the two steel framework posts, the steel plate shear wall is positioned under the self centering connecting element, the self centering connecting element comprises an inner sleeve pipe, an outer sleeve pipe, an end plate, a pre-stretching rod and a connecting head, the inner sleeve pipe is sheathed by the outer sleeve pipe, the end plate seals the end parts of the inner sleeve pipe and the outer sleeve pipe, the pre-stretching rod is arranged in the inner sleeve pipe and is anchored on the end plate, the connecting head is connected with the end part of the inner sleeve pipe, the length of the upper wing edge of the T-shaped steel beam is greater than the length a the web plate, the lower end of the web plate of the T-shaped steel beam is connected with the upper side surface of the outer sleeve pipe, and the lower side surface of the outer sleeve pipe is connected with the upper side surface of the steel plate shear wall. The post-tensioned prestressing self centering steel plate shear wall structure has the advantages that the plastic deformation of the steel plate shear wall can be effectively eliminated, the lateral deformation coordination of a framework and a floor slab can be ensured, and the restoring cost and the restoring difficulty of the engineering structures after the earthquake are greatly reduced.

The invention discloses molecule distillation equipment which comprises a molecule distillation equipment body and a vacuum tube, wherein a material distribution device is arranged at the upper end of the molecule distillation equipment body. The molecule distillation equipment is characterized in that the molecule distillation equipment body is a semi-cylindrical or semi-elliptical hollow column body; a rectangular side plane of the hollow column body is a material heating surface plate. The molecule distillation equipment has the beneficial effects that a good sealing effect can be achieved, the equipment manufacturing, operation and maintenance costs are relatively low, no stirring device is needed, a film can be automatically formed by using the material from top to bottom along an inclined surface, production continuity can be achieved, the time that the material passes through a heating surface is short, the product quality is good, power resources can be saved, the thermal energy utilization rate is high, the production cost is low, and the like; if the molecule distillation equipment is popularized and applied in related industries, related industrial lifting equipment and lifting process techniques can be powerfully ensured.

The invention relates to a non-intermittent real-time tracking solar energy light collecting drive mechanism and a working method thereof. The non-intermittent real-time tracking solar energy light collecting drive mechanism is characterized by consisting of a light collecting device, a drive mechanism, a speed reducer, an electric motor, an energy output mechanism, an energy output pipeline and a base; the working method comprises: (1) equipment installation; (2) adjusting the light collecting device in the solar energy light collecting drive mechanism to be precisely aligned to the sun; (3) starting the electric motor for driving; (4) energy output; (5) error treatment. The invention has the advantages that the light collecting drive mechanism can continuously track the sun without intermission; the method for adjusting the light collecting angle is simple and easy as well as low in cost, so as to be suitable for promotion and use in families and other small-scale electricity utilization occasions; the mechanism can continuously run so as to have electric power consumption being much lower than that of intermittent driving, has no impact load, is hard to damage, and is much longer in service life than that of intermittent transmission. The invention is an environment-friendly and energy-saving energy collecting device, thus being worth popularizing and applying.

The suspension high speed railway and the city suspension railway are overhead railway for suspending train, and the overhead railway is laid on the railway frame supported by the railway piles erected on the ground. Suspending train can lower the gravitational center of the train and this makes it possible to raise train speed to reach the speed level of magnetically suspension train. The present invention has simple structure, low cost and saving in earth.

The invention discloses a passenger compartment shape retention device and an automobile provided with the same, relates to a passenger compartment shape retention device for protecting safety of passengers during collision of an automobile, and belongs to the field of safety devices of automobiles. The passenger compartment shape retention device comprises a front wall plate, an instrument board crossbeam and an additional support beam extending between the front wall plate and the instrument board crossbeam, and a joint of the additional support beam on the instrument board crossbeam is positioned between a steering column mounting support and a second end. The passenger compartment shape retention device is simple in structure, the additional support beam is connected with the instrument board crossbeam and the front wall plate, deformation of the additional support beam, the instrument board crossbeam and the front wall plate which are used as a combination during collision is controllable, and the additional support beam cannot be broken to cause excessively high maintenance expenditure. Besides, the additional support beam is arranged between the instrument board crossbeam and the front wall plate, and the integral collision resistance of the passenger compartment shape retention device is improved, so that rearward movement of the instrument board crossbeam and rearward movement of the front wall plate are effectively controlled, and injury to chests of passengers is relieved.

The invention relates to a mechanical space electric lifting mechanism of a dump truck. The mechanism comprises a frame, a hopper, a driving rod, a connecting rod, a speed reducer and a motor, wherein one end of the driving rod is connected with the frame through a first rotation pair, and the other end is connected with the connecting rod through a first spherical pair; the other end of the connecting rod is connected with the front end of the hopper through a second spherical pair; the rear end of the hopper is connected with the frame through a second rotation pair; and the driving rod is driven by the motor through the speed reducer. The mechanism provided by the invention is driven by the motor and transmitted by the connecting rod, can effectively overcome the shortcomings of high processing assembly requirements, short service life, oil leakage, high maintenance cost and the like of the parts of a hydraulic system of a traditional hydraulic dump truck, and has good dynamic and static performance and large working space.

The invention relates to a simulative waterproof and dustproof level tester for a photovoltaic junction box, which belongs to the technical field of a photovoltaic assembly tester. The simulative waterproof and dustproof level tester for the photovoltaic junction box comprises a vacuum source, a main test desk, and more than one or two test systems. Each test system comprises a hand-pull vacuum valve, a fixed tool, a pressure valve and a pressure meter. The hand-pull vacuum valve comprises a valve body, a valve cover, a piston, an air inlet tube and an air outlet tube. A cylindrical bump of the valve cover is screwed in a cylindrical chamber of the valve body. The hand-pull vacuum valve, the pressure valve and the pressure meter are arranged on a work panel of the main test desk. The air inlet tube is connected with an extraction hole of the fixed tool by a hose and the air outlet tube is connected with the vacuum source by a hose. The pressure valve is connected with both ends of a cylinder of the fixed tool by a hose. The pressure meter is connected between the hand-pull vacuum valve and the photovoltaic junction box by a hose. The simulative waterproof and dustproof level tester for the photovoltaic junction box has the advantages that the simulative waterproof and dustproof level tester for the photovoltaic junction box is convenient to operate and has fast test speed; that each person can test 180 pieces of photovoltaic junction boxes every hour, 100% flawless detection of the photovoltaic junction boxes can be ensured; and the tested product reaches the level of IP67.

Provided is a solar power generation unit including: a transporter configured to transport light waves from the sun through a plurality of optical fibers; and a power generator configured to generate electricity by using the light waves incident to the plurality of optical fibers from the transporter, the power generator including a light wave guide configured to arrange the plurality of optical fibers on a plane or a sheet to face a light-incident surface of a solar panel, wherein a plurality of windows are formed in an outer circumferential surface of the plurality of optical fibers, the plurality of windows being configured to refract the light waves progressing therethrough such that the light waves are forwarded to the solar panel.

The invention relates to a device and a method for homogenizing domestic garbage. The device comprises a motor, a stirring shaft, a water inlet, a feed inlet, a homogenization tank, a homogenization blade, a residue storage area, a residue water outlet, a scraping plate, a fine material outlet plate, a heavy material storage groove, four pneumatic valve pneumatic valves, two adjustable grab buckets, a PLC controller and the like. To the domestic garbage in the invention, organic substances in the domestic garbage are crushed and homogenized by the change of the stirring rotational speed, the opening and the closing of the pneumatic valves and the use of the grab buckets, and inorganic residues can be synchronously separated. The homogenized material has uniform granularity, and the material and water form homogenate with favorable dispersibility.

An air filter connected with water supplying unit and air pipeline for filtering out the suspended microparticles from flowing gas is composed of a cavity body with multiple nozzles communicated with external water supplying unit for continuously spraying the atomized water into the cavity, and a water curtain generator arranged at the gas outlet of cavity body and connected to external water supplying unit to generate a water curtain to shield the gas outlet. It can be used to filter the corrosive gas from semiconductor factory.

The invention provides an asynchronous motor fault detection method based on an observer, and the method comprises the following steps: simplifying a mathematic model of an asynchronous motor throughcoordinate transformation, giving the mathematic model of the asynchronous motor under a static two-phase and rotating orthogonal coordinate system, and giving an asynchronous motor model after statorvoltage orientation; detecting the fault of the asynchronous motor; building a vector control asynchronous motor simulation model through MATALN / SIMULINK, wherein the the vector control asynchronousmotor simulation model comprises a power supply module, an inversion part, a vector control module and an asynchronous motor. and carrying out residual error comparison on a rotor current observationvalue output by the sliding mode observer and an actual value, so that fault detection of the system is realized. According to the method, whether the motor breaks down or not can be detected as soonas possible through comparison of the observed value and the actual value of the sliding mode observer, further aggravation of the fault can be prevented, and the maintenance time and cost of the motor fault are reduced.

The invention discloses a mobile phone valuation system based on computer vision and a valuation method thereof. The mobile phone valuation system based on computer vision comprises: a mobile phone model data collection module for collecting mobile phone model data; a mobile phone model evaluation model construction module which is used for establishing a mobile phone model evaluation model; a mobile phone image acquisition module which is used for acquiring and collecting images; a mobile phone model detection module which is used for detecting a mobile phone model; and a mobile phone depreciation valuation module which is used for estimating the price of of the mobile phone. According to the invention, a computer vision technology is utilized to establish a mobile phone estimation system, the system automatically identifies different types of mobile phones according to the appearances of the mobile phones and provides all predicted models for a user to select; meanwhile, the depreciation price of the mobile phone is estimated according to the configuration, the use time and the appearance condition of the mobile phone under the model, the specific estimation condition of the useris given, the maintenance cost of the user is prevented from being larger than the cost for replacing the mobile phone when the mobile phone is damaged, and the situation that the estimation value istoo low in the mobile phone selling process of the user is avoided.

According to principles of this invention, flour can be used as a filler for either an oil-based or PEG-based paintball fill material. In one embodiment of the present invention, a paintball fill material preferably comprises flour. More particularly, a paintball according to principles of the present invention can comprise a gelatin capsule defining an interior chamber which, upon formation of the paintball, houses a fill material. The fill material can comprise, for instance, 1%-65% polyethylene glycol, 25%-45% flour, and up to 0.5% dye, with the balance water. Accordingly, unlike conventional paintballs, the paintball fill material of the present invention preferably contains flour rather than starch to reduce the amount of polyethylene glycol required for the fill material. In alternative formulations, an oil can be used in addition to, or instead of, polyethylene glycol. According to another aspect of the present invention, the gelatin capsule for the paintball can also utilize flour in its composition. As with the fill material, the use of flour rather than starch in the paintball shell composition can reduce equipment maintenance and production costs.

The invention discloses a garden ground sweeper. The garden ground sweeper comprises a base, a first box, a hair collecting beam, a conveyor belt and a second box. Wheels are arranged on the two sidesof the base. The first box is arranged on the base and internally provided with a first accommodating space. The hair collecting beam is arranged in the first accommodating space and is in shaft connection with the side wall of the first accommodating space, and the rotating direction of the hair collecting beam and the motion direction of the ground sweeper are in the same plane. One end of theconveyor belt is connected with the base and is close to the position below the hair collecting beam. The second box is arranged at the end, away from the first box, of the base and internally provided with a second accommodating space. An inlet of the second accommodating space is connected with the other end of the conveyor belt. The garden ground sweeper realizes the technical effects that thestructure is simple, operation is convenient, garbage is swept and not missed, noise is small, the sweeping efficiency is high, and the garbage storage amount is large.

The invention discloses a pinwheel cooling machine capable of automatically controlling sand temperature, which comprises a roller, a roller casing and a roller driving device, retainer wheels are arranged at the edge of two ends of the roller, a sand inlet and a sand outlet are respectively arranged at two ends of the roller, a spray apparatus is arranged between the external part of the roller and the roller casing, the cooling machine also comprises an automatic atomization cooling device arranged in the roller, a blower fan interface is arranged at one end of the sand outlet of the roller, the automatic atomization cooling device comprises an atomization pipeline, the roller driving device comprises a transmission mechanism and a power mechanism, the transmission mechanism contains a pair of pin chain rings and double strand chain wheels which enable engagement and transmission, and two sides of a rotating shaft of the double strand chain wheel are supported on a bearing and a bearing pedestal in a rotation manner. The pinwheel cooling machine has the advantages that the transmission is reliable and stable, appearance of skid phenomenon can be avoided, temperature at the sand outlet can be effectively controlled, and the sand treatment amount in the machine in unit time is increased.

The invention discloses a bathroom automatic rotating sash device and system. After improvements are made, the bathroom automatic rotating sash device comprises fixing bases, connecting bases, a fixing frame, a rotating sash body, a control cabinet, a rotating motor, a large rotating wheel, a small rotating wheel and a rotating rod. It is known from a figure 1 and a figure 2 that the bathroom automatic rotating sash device is small in number of overall components, and simple in self structure; when the device is implemented, the control cabinet is electrically connected with the rotating motorand controls the rotating motor to rotate, accordingly, the rotating sash body is driven to rotate inside the fixing frame; compared with an existing bathroom window, the difference of the device isthat the rotating sash body can slowly rotate on the fixing frame; and the rotating sash body can be a glass sash body or a gauze sash body, through slow rotating of the rotating sash body on the fixing frame during bathing, the airflow situation in a bathroom can be improved, and the phenomena including dizziness of bathing people due to airtightness are avoided.

The invention provides a tidal current energy generating device fixed to water bottom. The tidal current energy generating device comprises an outer framework, at least three inner frameworks, at least three horizontal shaft water wheel generators, at least three rotary shafts, multiple outer sleeve pipes and multiple inner sleeve pipes. The at least three inner frameworks are separably arranged in the outer framework. The at least three horizontal shaft water wheel generators are arranged into the at least three inner frameworks.At least one horizontal shaft water wheel generator is correspondingly arranged on each rotary shaft. At least one rotary shaft is correspondingly installed on each inner framework. At least three driving units are connected with the rotary shafts in order to drive the rotary shafts to rotate. The multiple outer sleeve pipes are fixed onto the outer framework. A part of each inner sleeve pipe is connected to the bottom end and the water bottom of a corresponding outer sleeve pipe.

A bowling ball elevating assembly for an automatic pinsetter includes an idler pulley assembly having an idler arm and a tension spring causing the idler arm to maintain tension on a ball wheel belt driving a ball elevating ring member. An adjustment arm and a tension arm are mounted to an idler pulley shaft enabling adjusting the amount of tension applied by the tension spring to the idler arm, and consequently the tensioning force applied by an idler pulley to the ball wheel belt, thereby permitting slippage of the ball wheel belt relative to the ball elevating ring member when bowling pins and a bowling ball become jammed in the pinsetter. An improved idler v-pulley wheel has a reduced frictional engagement with the ball wheel belt, and improved positioning of the ball lift drive belt pulley reduces stress on the ball wheel belt.