32results about How to "Convenient test work" patented technology

The invention relates to a device for simulating load capacity of a door lock during the closing of a sliding door of an automobile. The invention is characterized in that the device comprises a base plate, fixed installing plates and a door lock installing plate, wherein the fixed installing plates are vertically arranged on the base plate at intervals and are provided with a transverse linear guide rail and a power source which drives a load installing plate to move along the linear guide rail; a transverse guide rail is fixed on the load installing plate; a sliding block is arranged on theguide rail; a load spring is connected between the load installing plate and the sliding block; a lock column installing plate is also fixed at the outer side of the sliding block; a lock column is arranged on the lock column installing plate; and the door lock corresponding to the lock column is arranged on the door lock installing plate. With the adoption of the simulating device, as the durability test of the door lock can be transferred from an automobile body to a laboratory table, the cost is saved, the test steps are simplified, and the period of product development is shortened.

The invention discloses an experimental device and an experimental method for simulating an anti-floating anchor-concrete plate composite structure. The experimental device comprises a load bearing device, wherein the load bearing device comprises a skeleton; the upper end of the skeleton is provided with an upper supporting plate which can move upwards relative to the skeleton; the lower end of the inner part of the skeleton is provided with a lower supporting plate which can move up and down relative to the skeleton; a force transfer device for transferring load and a force application device which is used for applying the load are arranged between the upper supporting plate and the lower supporting plate; the load bearing device is also provided with a testing device. According to the experimental device and the experimental method for simulating the anti-floating anchor-concrete plate composite structure, disclosed by the invention, design parameters of plane layout of different anchor rods, geometric parameters of a concrete plate, material strength and the like can be verified, so that optimal cooperative work of the anti-floating anchor-concrete plate composite structure can be achieved; load applying and counter force providing of the experimental device have the characteristic of self-balance system, so that an additional counter force balancing device does not need to be additionally arranged, and the anchor rod uplifting displacement and the concrete plate vertical displacement existing in the cooperative work when the anti-floating anchor-concrete plate composite structure plays an anti-floating role can be simulated; an assembling form is adopted, so that convenience is provided for the work of manufacturing, transporting, assembling and testing.

The invention relates to an online non-destructive testing method which is suitable for automatically measuring and recording the total grain number, the filled grain number, the maturing rate, the grain lengths, the grain widths and the length-width ratio of a single plant or single-batch paddy rice in the paddy rice seed testing process for agricultural scientific research personnel. The digitalized paddy rice seed testing machine mainly comprises six functional modules of a bar code recognizer, a grain transfer device, an air separation device, an image acquisition device, a PLC (Programmable Logic Controller) and a computer system. The digitalized paddy rice seed testing machine can be used for separating filled grains and empty and shriveled grains by utilizing the air separation device, dynamically acquiring grain parameters by utilizing a machine vision technology and simultaneously measuring the total grain number and the filled grain number of the paddy rice, thereby overcoming a bottleneck that the traditional testing measure can not simultaneously acquire the total grain number and the filled grain number and realizing the detection to the grain-size parameters of the paddy rice at the same time of calculating the paddy rice grain number. The invention can be also widely applied to the seed testing work of other grain crops.

The invention relates to a binding post connecting structure for a stainless steel composite material grounding lead-up wire. The binding post connecting structure comprises a lead-up wire and a binding post, wherein the binding post consists of a steel rectangular plate arranged at the upper part and a steel cylinder arranged at the lower part, a center hole is formed in the bottom surface of the steel cylinder, the binding post is sheathed on the lead-up wire through the center hole, external screw threads are arranged on the steel cylinder of the binding post, a screw nut sheathed on the lead-up wire is connected onto the external screw thread part of the steel cylinder of the binding post through screw threads, the lower part of an inner hole of the screw nut has the conical degree, and three grasping claws are arranged between the screw nut and the lead-up wire. The binding post connecting structure has the advantages that the screw nut is used for fixing the lead-up wire and the binding post, the connection can be realized through adopting a general and ordinary tool, the requirement on a construction tool can be reduced, because the threaded connection is adopted, the mounting and the dismounting are convenient, the installation direction of the binding post can be freely changed, the fast and convenient connection with external electric equipment grounding bars in any directions can be realized, in addition, the test work is convenient, and because the three grasping claws are arranged in the screw nut, the connection reliability can be ensured.

The invention discloses a shift fork system test tool. The shift fork system test tool includes: a base, and a first bracket and a second bracket are arranged in a spaced manner on the base; a first cylinder sleeve fixing pipe is fixed on the first bracket and a first cylinder sleeve is fixed in a first accommodating cavity on the first cylinder sleeve fixing pipe; and a first cylinder sleeve cavity is arranged on the first cylinder sleeve, a first piston and the first cylinder sleeve cavity are matched slidably, and the first piston and a shift fork shaft are supported by each other; a firstoil channel joint is arranged on the first cylinder sleeve fixing pipe; a second cylinder sleeve fixing pipe is fixed on the second bracket, and a second cylinder sleeve is fixed in a second accommodating cavity on the second cylinder sleeve fixing pipe; and a second cylinder sleeve cavity is arranged on the second cylinder sleeve, and a second piston and the second cylinder sleeve cavity are matched slidably; and the second piston and the shift fork shaft are supported by each other; and a second oil channel joint is arranged on a second cylinder sleeve fixing pipe. Compared with the prior art, the shift fork system test tool in an embodiment of the invention can realize efficient detection of performance of a shift fork system.

The invention discloses a city tunnel ventilation test device and a manufacturing method thereof. The manufacturing method comprises the following steps: (1) determining the geometric scale(lambda 1 is more than 10 and less than 22) of a model tunnel and an actual model; (2) making a plurality of sections according to the geometric shape of the actual tunnel and splicing the sections into the model tunnel, wherein one wall surface of the model tunnel is made from a transparent material and the other inner wall surfaces of the model tunnel are mounted with abrasive paper; (3) mounting a jet nozzle, a back pressure pipe and a tracer gas tracking mechanism in the predetermined positions of the model tunnel. According to the manufacturing method, the ratio of the model tunnel to the actual tunnel is (1 to 22) to (1 to 10); in the ratio range, on one hand, the flowing of air in the model tunnel can satisfythe properties of a self-model region, and the model tunnel and the actual tunnel are similar in geometricproperty and flowing resistance, so that the model tunnel can accurately simulate the movement of ventilation air flow and a pollutant dispersion law in the actual tunnel; on the other hand, the test cost is relatively low, so that the test operation can beconveniently carried out.

The invention relates to a metro vehicle display screen centralized on-off control method, which is realized by using a control circuit. A main circuit breaker, a self-locking button, a cab activated relay normally-open contact, and a display screen on-off relay of the control circuit are serially connected in sequence to form a display screen control main loop; the display screen control contactor of each section of the vehicle is serially connected with the normally-closed contact of the display screen on-off relay via a line and then connected with the main circuit breaker, thereby forming a display screen control sub loop for each section of the vehicle; and the display screen control contactor of each section of the vehicle is provided with two pairs of normally-open contacts which are serially connected between a left circuit breaker and a left display screen and between a right circuit breaker and a right display screen respectively. Through pressing the self-locking button in the activated cab, liquid crystal display screen of the overall vehicle can be on and off in a centralized mode. The control circuit is delicately designed, the control is safe and reliable, the operation is convenient, and convenience is brought to maintenance or test work.

The invention relates to the technical field of diesel locomotive water pump testing, in particular to a diesel engine water pump water pumping test bench, which includes a guide sleeve, a gear limit device, a worm gear transmission box, a waste water collection box, a hand wheel, and a turning table. A turning platform is fixed between the upper parts of both sides of the waste water collection box, and a worm gear transmission box is arranged on one side of the waste water collection box. A hand wheel is arranged on the worm gear transmission box. There is a hole for installing the water pump shell at the bottom, and a guide sleeve is provided on the side of the turning table close to the worm gear transmission box, and a gear limit device is placed in the guide sleeve, and the turning table is also equipped with a pumping device and pressure surface. The invention provides a water pumping workbench conforming to the size of the water pump, which can well fix and test the water pump, the whole workbench has good structural rigidity, and the water pump will not tip over when it rotates.