Compression testing machine and method based on gas spring shock absorber production

Abstract

The present invention relates to a compression testing machine and method based on the production of gas spring shock absorbers, and relates to the field related to pneumatic spring experiments. The machine comprises a base plate and a tempered glass protective cover detachably mounted on the base plate, a supporting square column being fixed on the base plate, and a positioning mechanism mounted on one side of the supporting square column. The gas spring shock absorber body is positionally restricted by the positioning mechanism, and a fixed weight testing mechanism is mounted on the supporting square column. The fixed weight testing mechanism applies a natural falling force of a specified weight to the gas spring shock absorber body, and the specified total amount applied by the fixed weight testing mechanism is adjusted by an adjustment component in the fixed weight testing mechanism. The fixed weight testing mechanism applies a drop impact force of a specified weight to the gas spring shock absorber body to simulate the bumping of a vehicle in a form. The drop impact force is based on the weight of a test box. The present invention can adjust the weight of the test box by an adjustment component.

Description

Technical Field

[0001] The present invention relates to the field related to pneumatic spring experiments, and in particular to a compression testing machine and method based on the production of a gas spring shock absorber. Background Art

[0002] The working principle of gas spring shock absorber, also known as pneumatic shock absorber, is to change the height of the vehicle body by controlling the air pressure. It includes elastic rubber airbag shock absorber, air pressure control system, trunk air tank and electronic control system.

[0003] When designing and producing pneumatic shock absorbers, in order to obtain shock absorber data so as to improve weak points, experimental equipment is needed. To this end, a large compression spring testing machine is disclosed, with announcement number: CN207528553U;

[0004] This device applies a specified force to the spring through a cylinder to test the degree of extrusion of the spring. However, this device is not suitable for pneumatic spring shock absorbers. Although pneumatic spring shock absorbers also need to test their extrusion stroke, they are different from ordinary springs. Pneumatic shock absorbers are used on vehicles. When pneumatic shock absorbers are used on vehicles, the force applied to the pneumatic shock absorber is the bumps of the entire vehicle and the bumps of the vehicle. The force applied to the pneumatic shock absorber is suddenly increased, and the force is unloaded through the pneumatic shock absorber to ensure the comfort of the vehicle. If a cylinder is used to directly apply a specified force to the pneumatic shock absorber, the unloading capacity of the pneumatic shock absorber cannot be tested. Summary of the Invention

[0005] The object of the present invention is to provide a compression testing machine and method based on the production of gas spring shock absorbers to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A compression testing machine based on a gas spring shock absorber comprises a base plate and a tempered glass protective cover detachably mounted on the base plate, a supporting square column being fixed to the base plate, and further comprising:

[0008] A positioning mechanism installed on one side of the supporting square column, through which the position of the gas spring shock absorber body is restricted;

[0009] A fixed weight test mechanism is installed on the supporting square column, and applies a natural falling force of a specified weight to the gas spring shock absorber body through the fixed weight test mechanism, and the specified total amount applied by the fixed weight test mechanism is adjusted by an adjustment component in the fixed weight test mechanism;

[0010] An air pressure adjustment member installed on the base plate, through which the air pressure of the gas spring shock absorber body is adjusted;

[0011] A feedback component is installed on the supporting square column, and the feedback component is connected to the gas spring shock absorber body. The feedback component records the unloading state of the gas spring shock absorber body when it is subjected to force.

[0012] As a further solution of the present invention: the positioning mechanism includes two fasteners slidably mounted on the base plate, the bottom of each of the two fasteners is fixed with a travel limit block, and the two travel limit blocks are slidably engaged with the travel limit grooves provided on the base plate;

[0013] Two travel limit blocks are slidably installed on the opposite sides of the two fasteners. Pushers for pushing the fasteners are fixed on the opposite sides of the two travel limit blocks. Guide rods are fixed on the two pushers. Force guides are installed on the guide rods. The force guides cooperate with the fixed weight test mechanism and are detachably connected to the gas spring shock absorber body.

[0014] Two bidirectional screw rods are also rotatably installed on the base plate, and the two bidirectional screw rods are connected by a transmission chain. Both ends of the two bidirectional screw rods are provided with threaded sleeves that match the threads therewith. The two threaded sleeves on one side are fixed by a transmission plate, and the transmission plate is fixed to the push piece.

[0015] As a further solution of the present invention: the force guiding member includes a limit member slidably mounted on the two guide rods, the two limit members are fixed with a wear-resistant member, and the two guide rods are sleeved with a spring, one end of the spring is fixed to the limit member and the other end is fixed to the guide rod;

[0016] An insert shaft is fixed on one side opposite to the two limiting members;

[0017] Among them, a connecting block is fixed on one wear-resistant part facing the other wear-resistant part, and a connecting groove that matches the connecting block is opened on the other wear-resistant part. The two wear-resistant parts are matched with the fixed weight test mechanism.

[0018] As a further solution of the present invention: the air pressure adjustment component includes an air pump fixed on the base plate, and the output end of the air pump is connected to the gas spring shock absorber body through a delivery pipe.

[0019] As a further solution of the present invention: the fixed weight experiment mechanism includes an experiment box, a sliding sleeve is fixed to the side of the experiment box facing the supporting square column, the sliding sleeve is slidably engaged with a slide rod fixed to the supporting square column, and force blocks are fixed on both sides of the experiment box;

[0020] Electric slide rails are fixed on both sides of the supporting square column, electric sliders are slidably installed on the electric slide rails, and a lifting plate is slidably installed on the electric slider along the length direction. A No. 1 electric push rod is fixed on the electric slider, and the movable shaft of the No. 1 electric push rod is fixed to the lifting plate;

[0021] A releasing piece that matches the experimental box is also installed on the supporting square column.

[0022] As a further solution of the present invention: the release member includes an assembly groove provided on the supporting square column, a limit plate is slidably installed in the assembly groove, and the supporting square column is further provided with an installation groove, the installation groove is connected to the assembly groove, a second electric push rod is fixed in the installation groove, and the movable shaft of the second electric push rod is fixed to the limit plate;

[0023] The experimental box is rotatably mounted with a roller on one side facing the supporting square column, and the roller is matched with the supporting square column.

[0024] As a further solution of the present invention: the adjustment assembly includes a support cover fixed on the support square column, and the support cover is slidably engaged with the experimental box;

[0025] The top of the experimental box is provided with a plurality of receiving slots, in which counterweight columns are slidably installed;

[0026] A support plate is fixed in the support cover, the support plate is slidably matched with the counterweight column, and a locking and releasing member is provided on the counterweight column and in the receiving groove;

[0027] The weights of the multiple counterweight columns are the same.

[0028] As a further solution of the present invention: the locking and releasing member includes a guide groove formed on the support plate and the receiving groove;

[0029] Two No. 1 limit blocks are symmetrically fixed on the top of the counterweight column, and two No. 2 limit blocks are symmetrically fixed on the bottom of the counterweight column. A card slot communicating with the guide slot is provided at the bottom of the accommodating groove;

[0030] Wherein, the second limit block and the first limit block are staggered;

[0031] A plurality of the counterweight columns are each provided with a driving member.

[0032] As a further solution of the present invention: the driving member includes a steering gear fixed in the support cover, and a docking block is fixed to the end of the output shaft of the steering gear, and the docking block cooperates with a docking groove provided on the counterweight column;

[0033] The number of the steering gears and docking blocks is the same as that of the counterweight columns.

[0034] The present invention also provides a compression test method based on the production of gas spring shock absorbers, which uses the compression test machine based on the production of gas spring shock absorbers, including the following steps:

[0035] Step 1: Use a positioning mechanism to limit the gas spring shock absorber body so that the gas spring shock absorber body will not deviate or fall over during the experiment;

[0036] Step 2: Perform a specified weight test on the gas spring shock absorber body through a fixed weight test mechanism, and adjust the weight of the fixed weight test mechanism through an adjustment component;

[0037] Step three: adjust the air pressure of the gas spring shock absorber body through the air pressure adjustment member to test the state of the gas spring shock absorber body under different air pressures.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The gas spring shock absorber body is limited by the positioning mechanism to ensure that the gas spring shock absorber body will not tilt or shift during the experiment, and the force applied to the gas spring shock absorber body during the experiment is directly transmitted to the shock absorber through the force guide. Since the shock absorber is connected to the vehicle at the end of the shock absorber, deformation and damage at this position is avoided;

[0040] Second, a drop impact force of a specified weight is applied to the gas spring shock absorber body through a fixed weight test mechanism to simulate the bumps of the vehicle in the form. The drop impact force is based on the weight of the test box. The present invention can adjust the weight of the test box through an adjustment component, and the adjustment range is controllable to test the limit of the gas spring shock absorber body, thereby facilitating improvements;

[0041] 3. The adjustment assembly of the present invention has a simple and reliable structure, can reduce the cost of equipment production from a practical perspective, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The right side diagram shows the overall compression testing machine produced based on gas spring shock absorbers.

[0043] Figure 2 This is a schematic diagram of the internal structure of the tempered glass protective cover in a compression testing machine produced based on a gas spring shock absorber.

[0044] Figure 3 This is a schematic diagram of the structure of the positioning mechanism in the compression testing machine produced based on the gas spring shock absorber.

[0045] Figure 4 This is a schematic diagram of the structure of the electric slider in the compression testing machine produced based on the gas spring shock absorber.

[0046] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0047] Figure 6 This is a schematic diagram of the position of the rollers in the compression testing machine produced based on the gas spring shock absorber.

[0048] Figure 7 This is a schematic diagram of the structure of the feedback component of the compression testing machine produced based on the gas spring shock absorber.

[0049] Figure 8 This is a schematic diagram of the structure of the fixed weight test mechanism in the compression testing machine produced based on the gas spring shock absorber.

[0050] Figure 9 for Figure 8 A partial enlarged view of point B in the middle.

[0051] Figure 10 for Figure 8 A partial enlarged view of point C in the middle.

[0052] Figure 11 This is a cross-sectional view of the test box in the compression testing machine produced based on the gas spring shock absorber.

[0053] Figure 12 for Figure 11 A partial enlarged view of point D in the middle.

[0054] Figure 13 This is a top perspective view of the support plate and test box in a compression testing machine based on gas spring shock absorbers.

[0055] Figure 14 for Figure 13 A partial enlarged view of point F in the middle.

[0056] In the figure: 1. Base plate; 2. Tempered glass protective cover; 3. Support column; 4. Support cover; 401. Experiment box; 402. Support plate; 403. Servo; 404. Docking block; 405. Counterweight column; 406. Docking slot; 407. No. 1 limit block; 408. Accommodating slot; 409. Guide slot; 4010. No. 2 limit block; 4011. Card slot; 5. Gas spring shock absorber body; 6. Transmission plate; 601. Bidirectional screw; 602. Guide rod; 603. Fastener; 604. Push piece; 605. Spring Spring; 606, travel limit block; 607, transmission chain; 608, limit part; 609, wear-resistant part; 6010, connecting block; 6011, travel limit groove; 7, air pump; 701, delivery pipe; 8, electric slide rail; 801, electric slider; 802, electric push rod No. 1; 803, lifting plate; 804, force block; 9, assembly groove; 901, electric push rod No. 2; 902, limit plate; 903, roller; 10, sliding sleeve; 1001, slide rod; 11, status collection device; 1101, connecting part. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0058] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0059] For example 1, please refer to Figures 1 to 14 A compression testing machine based on a gas spring shock absorber comprises a base plate 1 and a tempered glass protective cover 2 detachably mounted on the base plate 1, a supporting square column 3 is fixed on the base plate 1, and further comprises:

[0060] A positioning mechanism installed on one side of the supporting square column 3 is used to limit the position of the gas spring shock absorber body 5;

[0061] A fixed weight test mechanism is installed on the supporting square column 3, which applies a natural falling force of a specified weight to the gas spring shock absorber body 5 through the fixed weight test mechanism, and the specified total amount applied by the fixed weight test mechanism is adjusted by an adjustment component in the fixed weight test mechanism;

[0062] An air pressure adjustment member mounted on the base plate 1 adjusts the air pressure of the gas spring shock absorber body 5 through the air pressure adjustment member;

[0063] The feedback component is installed on the supporting square column 3 and is connected to the gas spring shock absorber body 5. The feedback component records the unloading state of the gas spring shock absorber body 5 when it is subjected to force.

[0064] In the embodiment of the present invention, when conducting an experiment, the gas spring shock absorber body 5 is limited by a positioning mechanism so that the gas spring shock absorber body 5 does not shift or fall over during the experiment.

[0065] A fixed-weight force test is performed on the gas spring shock absorber body 5 through a fixed-weight test mechanism. During the test, the fixed-weight test mechanism will be located directly above the gas spring shock absorber body 5 and throw a test piece of a specified weight. The test piece will fall onto the gas spring shock absorber body 5 in a natural falling manner, and the unloading state of the gas spring shock absorber body 5 after the force is applied will be recorded through the feedback component.

[0066] The air pressure of the pneumatic spring of the gas spring shock absorber body 5 can be adjusted by the air pressure adjusting member, so that the gas spring shock absorber body 5 can obtain data of the gas spring shock absorber body 5 under different air pressures in cooperation with the constant weight test mechanism.

[0067] The feedback component includes a state collection device 11, which is connected to the gas spring shock absorber body 5 through a connecting member 1101. When the gas spring shock absorber body 5 is subjected to force, the connecting member 1101 will be driven to move upright, so that the motion trajectory of the connecting member 1101 can be collected through the state collection device 11 to obtain the motion trajectory of the gas spring shock absorber body 5 after being subjected to force.

[0068] The second embodiment is distinguished from the first embodiment in that the positioning mechanism includes two fasteners 603 slidably mounted on the base plate 1 , and a travel limit block 606 is fixed to the bottom of each of the two fasteners 603 , and the two travel limit blocks 606 are slidably engaged with the travel limit slots 6011 provided on the base plate 1 ;

[0069] Two travel limit blocks 606 are slidably mounted on opposite sides of the two fasteners 603. Pushers 604 for pushing the fasteners 603 are fixed on opposite sides of the two travel limit blocks 606. Guide rods 602 are fixed on the two pushers 604. Force guides are mounted on the guide rods 602. The force guides cooperate with the fixed weight test mechanism and are detachably connected to the gas spring shock absorber body 5.

[0070] Two bidirectional screw rods 601 are also rotatably installed on the base plate 1, and the two bidirectional screw rods 601 are connected by a transmission chain 607. Both ends of the two bidirectional screw rods 601 are provided with threaded sleeves that threadably match them. The two threaded sleeves on one side are fixed by a transmission plate 6, and the transmission plate 6 is fixed to the push piece 604.

[0071] In the embodiment of the present invention, when positioning the gas spring shock absorber body 5 before the experiment, the gas spring shock absorber body 5 is first placed between the two fasteners 603. The two fasteners 603 achieve stroke limit under the cooperation of the stroke limit block 606 and the stroke limit groove 6011, so that when the two fasteners 603 move in opposite directions to the end of the stroke, the gas spring shock absorber body 5 can be accommodated when placed on the fasteners 603. When the two fasteners 603 move relative to each other, the gas spring shock absorber body 5 is clamped and fixed;

[0072] One of the bidirectional screw rods 601 is driven to rotate by a motor / manually. When one of the bidirectional screw rods 601 rotates, the other bidirectional screw rod 601 is driven to rotate by the transmission chain 607, so that the two bidirectional screw rods 601 rotate synchronously. When the bidirectional screw rod 601 rotates, the threaded sleeves on both sides and the two transmission plates 6 are driven to move relative / oppositely by the threaded engagement with the threaded sleeve. When the two transmission plates 6 move relative to each other, the pusher 604 is driven to give the two travel limit blocks 606 relative movement through the pusher 604, so as to clamp and fix the gas spring shock absorber body 5 by pushing the two fasteners 603;

[0073] The guide rod 602 moves synchronously with the gas spring shock absorber body 5 and the push piece 604 .

[0074] The force guide member includes a limiter 608 slidably mounted on the two guide rods 602, and a wear-resistant member 609 is fixed on each of the limiters 608. A spring 605 is sleeved on each of the two guide rods 602, and one end of the spring 605 is fixed to the limiter 608 and the other end is fixed to the guide rod 602;

[0075] An insert shaft is fixed on the opposite side of the two limiting members 608;

[0076] Among them, a connecting block 6010 is fixed on one wear-resistant part 609 facing the other wear-resistant part 609, and a connecting groove that cooperates with the connecting block 6010 is opened on the other wear-resistant part 609. The two wear-resistant parts 609 cooperate with the fixed weight test mechanism.

[0077] In the embodiment of the present invention, the gas spring shock absorber body 5 is connected to the vehicle frame at one end and to the transverse arm / fork arm at the other end. The end connected to the vehicle frame is fixed by bolts, and there must be a connecting portion. The connecting portion is usually a U-shaped frame with two pin holes. When conducting experiments, gravity is directly applied to the U-shaped frame, which will inevitably cause the U-shaped member to deform, thereby affecting the experimental data. After the deformation, a secondary experiment cannot be performed. The solution of the present invention is as follows:

[0078] When the gas spring shock absorber body 5 is on the two fasteners 603, adjust the position of the pin hole of the U-shaped frame of the gas spring shock absorber body 5 so that the pin hole is concentric with the insertion axis of the two limit members 608;

[0079] When the two transmission plates 6 and the push piece 604 move relative to each other, the guide rod 602 is driven to move relative to each other. When the two transmission plates 6 move to the end of their travel, the insertion shafts of the two limit members 608 are inserted into the pin holes of the U-shaped frame of the gas spring shock absorber body 5, and the connecting block 6010 is inserted into the connecting groove.

[0080] When the fixed weight test mechanism is working, the applied force will be applied to the connecting block 6010 and transmitted to the gas spring shock absorber body 5 through the limiter 608 and the plug shaft;

[0081] When the wear-resistant part 609 is subjected to force, the wear-resistant part 609 and the limiting part 608 are synchronously lowered. In order to prevent the limiting part 608 from rotating when the guide rod 602 and the limiting part 608 slide relative to each other, a plurality of limiting strips are fixed at equal intervals on the circumference of the guide rod 602. The limiting strips slide in conjunction with the limiting grooves provided on the limiting part 608 to prevent the limiting part 608 from rotating when sliding.

[0082] It should be noted that the top of the wear-resistant part 609 is made of rubber and is replaceable. Of course, other materials can also be used, and the present invention does not specifically limit this.

[0083] The air pressure adjustment component includes an air pump 7 fixed on the base plate 1 , and the output end of the air pump 7 is connected to the gas spring shock absorber body 5 through a delivery pipe 701 .

[0084] In the embodiment of the present invention, when the air pump 7 is working, it pumps air to the gas spring shock absorber body 5 through the delivery pipe 701 to increase the height of the pneumatic spring;

[0085] The delivery pipe 701 needs to be installed manually, and when positioning the gas spring shock absorber body 5 , the air inlet end of the gas spring shock absorber body 5 should be oriented toward the side away from the supporting square column 3 .

[0086] Embodiment 3 is distinguished from Embodiment 1 and / or Embodiment 2 in that: the fixed weight experiment mechanism includes an experiment box 401, a sliding sleeve 10 is fixed to the side of the experiment box 401 facing the support square column 3, the sliding sleeve 10 is slidably engaged with a sliding rod 1001 fixed to the support square column 3, and force blocks 804 are fixed on both sides of the experiment box 401;

[0087] Electric slide rails 8 are fixed on both sides of the supporting square column 3, on which electric sliders 801 are slidably mounted, and on which lifting plates 803 are slidably mounted along the length direction, a first electric push rod 802 is fixed on the electric slide 801, and the movable shaft of the first electric push rod 802 is fixed to the lifting plate 803;

[0088] The supporting square column 3 is also provided with a release member that cooperates with the experimental box 401 .

[0089] In the embodiment of the present invention, the electric slider 801 can slide on the electric slide rail 8, and then the electric slider 801 drives the lifting plate 803 to slide along. When the first electric push rod 802 is working, the lifting plate 803 is driven to slide by extending / retracting the movable shaft.

[0090] The release member is used to limit / release the experimental box 401;

[0091] When the experimental box 401 is released, it falls naturally and hits the connecting block 6010 through natural falling, so that the gravity during the fall is transmitted to the gas spring shock absorber body 5 through the connecting block 6010, the limit piece 608, and the plug shaft. As the gas spring shock absorber body 5 unloads the force, the experimental box 401 will become static. When the experimental box 401 is not static, the electric slider 801 drops to the lowest point. At this time, the lifting plate 803 is in a retracted state, that is, the lifting plate 803 will not contact the force block 804 when it falls. When the experimental box 401 is static, the lifting plate 803 extends and then rises. By lifting the force block 804 by the lifting plate 803, the lifting plate 803 and the experimental box 401 are driven to the highest point, and then the experimental box 401 is limited by the release piece.

[0092] The release member includes an assembly slot 9 provided on the supporting square column 3, a limit plate 902 is slidably installed in the assembly slot 9, and the supporting square column 3 is further provided with an installation slot, the installation slot being connected to the assembly slot 9, a second electric push rod 901 is fixed in the installation slot, and the movable shaft of the second electric push rod 901 is fixed to the limit plate 902;

[0093] The experimental box 401 is rotatably mounted with a roller 903 on one side facing the supporting square column 3 , and the roller 903 cooperates with the supporting square column 3 .

[0094] In the embodiment of the present invention, when the second electric push rod 901 is working, it drives the limit plate 902 to extend / retract. When the experiment box 401 rises to the highest point, the second electric push rod 901 extends the limit plate 902 to limit the roller 903 and the experiment box 401. When the experiment box 401 needs to be released, the second electric push rod 901 drives the limit plate 902 to retract to contact the limit of the roller 903 and the experiment box 401, so that the experiment box 401 naturally descends.

[0095] The roller 903 can reduce the friction force when the limiting plate 902 is released from the limit.

[0096] The adjustment assembly includes a support cover 4 fixed on the support square column 3, and the support cover 4 is slidably matched with the experimental box 401;

[0097] The top of the experimental box 401 is provided with a plurality of receiving slots 408 , in which counterweight columns 405 are slidably installed;

[0098] A support plate 402 is fixed in the support cover 4, and the support plate 402 is slidably matched with the counterweight column 405, and a locking and releasing member is provided on the counterweight column 405 and in the receiving groove 408;

[0099] The weights of the plurality of counterweight columns 405 are the same.

[0100] In an embodiment of the present invention, each counterweight column 405 on the experimental box 401 can be selected through a locking and releasing component to determine whether to fall with the experimental box 401. The counterweight columns 405 that do not fall with the experimental box 401 are limited to the support plate 402 by the locking and releasing component, and the overall weight of the experimental box 401 is determined by the number of counterweight columns 405 that fall with the experimental box 401.

[0101] The locking and releasing member includes a guide groove 409 formed on the support plate 402 and the receiving groove 408;

[0102] Two No. 1 limit blocks 407 are symmetrically fixed on the top of the counterweight column 405, and two No. 2 limit blocks 4010 are symmetrically fixed on the bottom of the counterweight column 405. A clamping slot 4011 communicating with the guide slot 409 is opened at the bottom of the receiving slot 408;

[0103] The second limiting block 4010 and the first limiting block 407 are staggered.

[0104] A driving member is installed on each of the plurality of counterweight columns 405 .

[0105] In the embodiment of the present invention, please refer to Figure 14 and Figure 13 When the total amount of the experimental box 401 is dropped is selected, the counterweight column 405 is driven to rotate by the driving member. The rotation has two states: Figure 14 As normal:

[0106] State 1: In normal state, the second limit block 4010 is in the guide groove 409, and the first limit block 407 is misaligned with the guide groove 409, thereby allowing relative movement between the experimental box 401 and the counterweight column 405. When the experimental box 401 descends, the counterweight column 405 does not descend with the experimental box 401.

[0107] Since the first limit block 407 is misaligned with the guide groove 409, the support plate 402 limits the first limit block 407 and the counterweight column 405, so that the counterweight column 405 is suspended on the support plate 402;

[0108] State 2: When the counterweight column 405 rotates, the second limiting block 4010 moves into the slot 4011, and at the same time, the first limiting block 407 moves to coincide with the guide slot 409. The coincidence of the first limiting block 407 and the guide slot 409 corresponds to the release of the limiting of the counterweight column 405 and the first limiting block 407 by the support plate 402, so that the counterweight column 405 follows the experimental box 401 when it descends, and the limiting of the slot 4011 and the second limiting block 4010 ensures that the counterweight column 405 does not separate from the experimental box 401 when it descends, and improves the integrity between the two, so that the gravity of the experimental box 401 and the wear-resistant part 609 are unified when the experimental box 401 contacts the wear-resistant part 609;

[0109] The weight of the experimental box 401 is adjusted through the above-mentioned state 1 and state 2, and the structure is relatively simple.

[0110] The driving member includes a steering gear 403 fixed in the support cover 4, and a docking block 404 is fixed to the output shaft end of the steering gear 403, and the docking block 404 cooperates with the docking groove 406 provided on the counterweight column 405;

[0111] The number of the steering gears 403 and the docking blocks 404 is the same as the number of the counterweight columns 405 .

[0112] In the embodiment of the present invention, when the experimental box 401 and the counterweight column 405 are at the highest position, the docking block 404 is inserted into the docking slot 406. When the docking block 404 is working, the counterweight column 405 is driven to rotate by the docking block 404.

[0113] A controller is fixed on the top of the support cover 4 , and all the steering gears 403 are electrically connected to the controller.

[0114] The present invention also provides a compression test method based on the production of gas spring shock absorbers, which uses the compression test machine based on the production of gas spring shock absorbers, including the following steps:

[0115] Step 1: The gas spring shock absorber body 5 is limited by the positioning mechanism so that the gas spring shock absorber body 5 will not deviate or fall during the experiment;

[0116] Step 2: Perform a specified weight test on the gas spring shock absorber body 5 through a fixed weight test mechanism, and adjust the weight of the fixed weight test mechanism through an adjustment component;

[0117] Step three: adjust the air pressure of the gas spring shock absorber body 5 through the air pressure adjusting member to test the state of the gas spring shock absorber body 5 under different air pressures.

[0118] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0119] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A compression testing machine based on a gas spring shock absorber, comprising a base plate (1) and a tempered glass protective cover (2) detachably mounted on the base plate (1), a supporting square column (3) being fixed on the base plate (1), characterized in that: Also includes: A positioning mechanism installed on one side of the supporting square column (3) is used to limit the position of the gas spring shock absorber body (5); A fixed weight test mechanism is installed on the supporting square column (3), and a natural falling force of a specified weight is applied to the gas spring shock absorber body (5) through the fixed weight test mechanism, and the specified total amount applied by the fixed weight test mechanism is adjusted through an adjustment component in the fixed weight test mechanism; An air pressure adjusting member mounted on the base plate (1) is used to adjust the air pressure of the air spring shock absorber body (5); A feedback member installed on the supporting square column (3), the feedback member being connected to the gas spring shock absorber body (5), and recording the unloading state of the gas spring shock absorber body (5) when it is subjected to force through the feedback member; The fixed weight experiment mechanism comprises an experiment box (401), and the adjustment component comprises a support cover (4) fixed on the support square column (3), and the support cover (4) is slidably matched with the experiment box (401); The top of the experimental box (401) is provided with a plurality of receiving slots (408), and a counterweight column (405) is slidably installed in the receiving slots (408); A support plate (402) is fixed in the support cover (4), the support plate (402) is slidably matched with the counterweight column (405), and a locking and releasing member is provided on the counterweight column (405) and in the receiving groove (408); wherein the weights of the plurality of counterweight columns (405) are the same; Each counterweight column (405) on the experimental box (401) is selected by a locking and releasing member to follow the experimental box (401) to fall, and the counterweight column (405) that does not follow the experimental box (401) to fall is limited to the support plate (402) by the locking and releasing member, and the weight of the entire experimental box (401) is determined by the number of counterweight columns (405) that follow the experimental box (401) to fall.

2. A compression testing machine based on gas spring shock absorber production according to claim 1, characterized in that: The positioning mechanism comprises two fasteners (603) slidably mounted on the base plate (1), a travel limit block (606) being fixed to the bottom of each of the two fasteners (603), and the two travel limit blocks (606) are slidably engaged with a travel limit slot (6011) provided on the base plate (1); Two travel limit blocks (606) are slidably mounted on opposite sides of the two fasteners (603). Pushers (604) for pushing the fasteners (603) are fixed on opposite sides of the two travel limit blocks (606). Guide rods (602) are fixed on the two pushers (604). A force guide is mounted on the guide rods (602). The force guide cooperates with the fixed weight test mechanism and is detachably connected to the gas spring shock absorber body (5). Two bidirectional screw rods (601) are rotatably mounted on the base plate (1). The two bidirectional screw rods (601) are connected via a transmission chain (607). Both ends of the two bidirectional screw rods (601) are sleeved with threaded sleeves that threadably match the two bidirectional screw rods (601). The two threaded sleeves on one side are fixed via a transmission plate (6), and the transmission plate (6) is fixed to the push piece (604).

3. A compression testing machine based on gas spring shock absorber production according to claim 2, characterized in that: The force guide member includes a limit member (608) slidably mounted on the two guide rods (602), a wear-resistant member (609) is fixed on each of the two limit members (608), and a spring (605) is sleeved on each of the two guide rods (602), one end of the spring (605) is fixed to the limit member (608) and the other end is fixed to the guide rod (602); An insert shaft is fixed on opposite sides of the two limiting members (608); Among them, a connecting block (6010) is fixed on one side of one wear-resistant part (609) facing the other wear-resistant part (609), and a connecting groove that cooperates with the connecting block (6010) is opened on the other wear-resistant part (609). The two wear-resistant parts (609) cooperate with the fixed weight test mechanism.

4. A compression testing machine based on gas spring shock absorber production according to claim 3, characterized in that: The air pressure adjustment component comprises an air pump (7) fixed on the base plate (1), and the output end of the air pump (7) is connected to the air spring shock absorber body (5) through a delivery pipe (701).

5. The compression testing machine based on the gas spring shock absorber production according to claim 2, characterized in that: A sliding sleeve (10) is fixed on one side of the experimental box (401) facing the supporting square column (3), and the sliding sleeve (10) is in sliding engagement with a sliding rod (1001) fixed on the supporting square column (3). Force blocks (804) are fixed on both sides of the experimental box (401); Electric slide rails (8) are fixed on both sides of the supporting square column (3), an electric slider (801) is slidably mounted on the electric slide rail (8), a lifting plate (803) is slidably mounted on the electric slider (801) along the length direction, a No. 1 electric push rod (802) is fixed on the electric slider (801), and a movable shaft of the No. 1 electric push rod (802) is fixed to the lifting plate (803); A release member that cooperates with the experimental box (401) is also installed on the supporting square column (3).

6. A compression testing machine based on gas spring shock absorber production according to claim 5, characterized in that: The release member includes an assembly groove (9) provided on the supporting square column (3), a limit plate (902) is slidably installed in the assembly groove (9), and a mounting groove is further provided on the supporting square column (3), the mounting groove is communicated with the assembly groove (9), a second electric push rod (901) is fixed in the mounting groove, and a movable shaft of the second electric push rod (901) is fixed to the limit plate (902); The experimental box (401) is rotatably mounted with a roller (903) on one side facing the supporting square column (3), and the roller (903) cooperates with the supporting square column (3).

7. The compression testing machine based on the gas spring shock absorber according to claim 5, characterized in that: The locking and releasing member includes a guide groove (409) formed on the support plate (402) and the receiving groove (408); Two No. 1 limit blocks (407) are symmetrically fixed on the top of the counterweight column (405), and two No. 2 limit blocks (4010) are symmetrically fixed on the bottom of the counterweight column (405). A clamping groove (4011) communicating with the guide groove (409) is provided at the bottom of the accommodating groove (408); Wherein, the second limit block (4010) and the first limit block (407) are staggered; A driving member is installed on each of the plurality of counterweight columns (405).

8. A compression testing machine based on gas spring shock absorber production according to claim 7, characterized in that: The driving member comprises a steering gear (403) fixed in the support cover (4), a docking block (404) being fixed to the end of the output shaft of the steering gear (403), and the docking block (404) being matched with a docking groove (406) provided on the counterweight column (405); The number of the steering gears (403) and docking blocks (404) is the same as the number of the counterweight columns (405).

9. A compression test method based on the production of gas spring shock absorbers, using the compression test machine based on the production of gas spring shock absorbers according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: limiting the position of the gas spring shock absorber body (5) by a positioning mechanism so that the gas spring shock absorber body (5) will not deviate or fall during the experiment; Step 2: Performing a specified weight test on the gas spring shock absorber body (5) through a fixed weight test mechanism, and adjusting the weight of the fixed weight test mechanism test through an adjustment component; Step three: adjusting the air pressure of the gas spring shock absorber body (5) through the air pressure adjusting member to test the state of the gas spring shock absorber body (5) under different air pressures.

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