Hydraulic cylinder simulation test device

Abstract

The invention is suitable for the technical field of hydraulic cylinder testing, and provides a hydraulic cylinder simulation inspection device which comprises an inspection frame and a to-be-tested hydraulic cylinder. The inspection frame comprises a top cover and a base; guide pipes are symmetrically fixed on the surface of the lifting plate; a counterweight part is arranged between the two guide pipes in a sliding manner; supporting springs are fixed to the surfaces of the partition plates. A sliding ring in sliding fit with the inner wall of the guide pipe is fixed to the other end of the supporting spring. A lifting assembly is slidably arranged in the sliding groove. The lifting assemblies are arranged above the corresponding sliding rings; the lifting assembly comprises a lifting part arranged in the sliding groove in a sliding mode. A sliding part matched with the guide plate is arranged in the lifting part in a sliding manner; according to the device, the multiple sets of lifting assemblies are evenly arranged in the guide pipe from top to bottom, in the process that the balance weight plate descends along the guide pipe, slow descending of the balance weight plate is achieved through the buffering effect of the multiple sets of lifting assemblies, and the situation that a hydraulic cylinder is damaged due to the fact that the freely-falling balance weight plate descends at the high speed is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinder testing, and more particularly to a hydraulic cylinder simulation testing device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It is widely used in the hydraulic systems of various machines due to its simple structure, reliable operation and smooth movement. After the hydraulic cylinder is produced, it needs to be subjected to a pressure test to ensure that the hydraulic cylinder can operate stably and safely under high-pressure environment, so as to verify its sealing and structural strength.

[0003] Currently, when testing the oil cylinder, most of the time, a counterweight plate is placed on the top of the oil cylinder to simulate various pressure conditions that the oil cylinder may encounter in the actual working environment. As the counterweight increases, the pressure on the oil cylinder gradually increases, so that key indicators such as the working state, sealing performance, and structural strength of the oil cylinder under different pressures can be tested.

[0004] However, when the cylinder needs to be counterweighted during the test, the counterweight plate needs to be placed on the top of the cylinder in sequence. However, in the prior art, the counterweight block is often placed on a placement table on the top of the hydraulic cylinder by a manipulator, and during the placement process, the counterweight block may slip from the manipulator and directly fall on the placement table, which may cause damage to the hydraulic cylinder. At the same time, due to the large weight of the counterweight plate alone, the range of counterweight adjustment is less accurate, which reduces the accuracy of the simulation test. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a hydraulic cylinder simulation inspection device. By evenly arranging multiple groups of lifting components from top to bottom inside the guide tube, the counterweight plate can be slowly lowered through the buffering effect of the multiple groups of lifting components during the process of its descending along the guide tube, thereby preventing the free-falling counterweight plate from damaging the hydraulic cylinder due to its rapid descending speed.

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

[0007] A hydraulic cylinder simulation test device comprises a test frame and a hydraulic cylinder to be tested which is fixedly mounted on the test frame by fastening bolts; the feature is that: the test frame comprises a top cover and a base; a support plate is fixed between the top cover and the base; sliding rods are symmetrically fixed to the surface of the base; a lifting plate is slidably arranged between the two sliding rods; the bottom surface of the lifting plate is fixedly connected to the telescopic end of the hydraulic cylinder to be tested by fastening bolts; guide tubes are symmetrically fixed to the surface of the lifting plate; a counterweight is slidably arranged between the two guide tubes; a bearing platform adapted to the counterweight is fixed to the surface of the lifting plate between the two guide tubes; the inside of the guide tube is fixedly connected to the hydraulic cylinder to be tested by fastening bolts; a guide tube is symmetrically fixed to the surface of the lifting plate; a counterweight is slidably arranged between the two guide tubes; a bearing platform adapted to the counterweight is fixed to the surface of the lifting plate between the two guide tubes; the guide tube is internally provided with a bearing platform adapted to the counterweight. A number of partitions are evenly fixed from top to bottom; a guide plate is fixed on the surface of the partition; the guide plate is symmetrically provided with oblique grooves on two opposite sides near the bottom; a support spring is fixed on the surface of the partition; a sliding ring that slidably cooperates with the inner wall of the guide tube is fixed on the other end of the support spring; sliding grooves are symmetrically provided on the peripheral side of the guide tube between two adjacent partitions; a lifting component is slidably arranged in the sliding groove; the lifting component is placed above the corresponding sliding ring; the lifting component includes a lifting part slidably arranged in the sliding groove; a sliding part that slidably cooperates with the guide plate is slidably arranged inside the lifting part; a locking tongue part is slidably arranged inside the sliding part.

[0008] The present invention is further configured as follows: a rotating rod is symmetrically provided on the top of the top cover and is rotatably penetrated; a first stop portion and a second stop portion which are rotatably matched with the corresponding sliding rod are respectively fixed at the bottom ends of the two rotating rods; a connecting rod which is coaxial with the corresponding guide tube is symmetrically fixed to the bottom surface of the top cover; the counterweight portion includes a counterweight plate; the two ends of the counterweight plate are inclined surfaces parallel to each other; the top of the bearing platform is an inclined surface which is matched with the end of the counterweight plate; two groups of ear plates are fixed to the peripheral side of the counterweight plate; slip rings which are slidably matched with the corresponding connecting rods are fixed to the ends of the two ear plates; the slip rings are slidably matched with the corresponding guide tubes.

[0009] The present invention is further configured as follows: the first stop part and the second stop part both include a chassis fixed to the bottom end of the rotating rod; a sleeve that cooperates with the sliding rod for rotation is fixed to the bottom surface of the chassis; a fan-shaped baffle is fixed to the peripheral side of the chassis; an outer arc plate and an inner arc plate coaxial with the chassis are fixed above the chassis; an arc connecting plate is fixed to the inner peripheral side of the inner arc plate and the outer side of the outer arc plate; a support rod is fixed between the two arc connecting plates and the fan-shaped baffles; a guide channel is formed between the outer arc plate and the inner arc plate; the connecting rod is slidably arranged in the guide channel; the guide channel inlet on the first stop part is coplanar with the guide channel inlet on the second stop part, so that the two connecting rods synchronously enter and exit the corresponding guide channels on the first stop part and the second stop part that rotate in the same direction.

[0010] The present invention is further configured as follows: ear seats that are symmetrically fixed to the peripheral side surfaces of the lifting plate and slidably cooperate with the corresponding sliding rods; guide grooves are symmetrically provided on both sides of the inner wall of the slide groove; the lifting part includes a lifting block slidably arranged in the slide groove; guide blocks that are slidably cooperate with the guide grooves are symmetrically fixed to the two opposite sides of the lifting block; an extension tube is penetrated and connected to the side surface of the lifting block; limiting grooves are symmetrically provided on the inner wall of the extension tube; the sliding part includes a sliding column that is slidably cooperates with the inner wall of the extension tube; limiting rails that are slidably cooperate with the limiting grooves are symmetrically fixed to the peripheral side surfaces of the sliding column; a blocking cover is fixed to one end of the sliding column; a return spring mounted on the extension tube is fixed to the blocking cover and the side surface of the lifting block; an ear rod is fixed to the side surface of the blocking cover; and a guide ball is fixed to the end of the ear rod.

[0011] The present invention is further configured as follows: a T-shaped pressure plate is symmetrically fixed on the side surface of the baffle cover; a square groove is provided inside the sliding column; the lock tongue portion includes a lock tongue slidably arranged in the square groove; an inclined guide groove is provided on the side surface of the lock tongue; an extrusion spring is fixed between the other opposite side surface of the lock tongue and the inner wall of the square groove, and a connecting rope is symmetrically fixedly connected between the lock tongue and the inner wall of the square groove.

[0012] The present invention is further configured as follows: a controller is installed on the surface of the top cover; a sprocket is fixed on the peripheral side of the rotating rod; a chain is arranged between the two sprockets for meshing transmission; a U-shaped seat is fixed on the surface of the top cover; a servo motor electrically connected to the output end of the controller is fixedly installed on the top of the U-shaped seat; and the output end of the servo motor is fixedly connected to the top end of a rotating rod.

[0013] The present invention is further configured as follows: a conical material receiving hopper is installed on the surface of the top cover; a discharge pipe is connected to the bottom of the conical material receiving hopper; a number of counterweight balls that slide with the discharge pipe are placed inside the conical material receiving hopper; a conical material receiving hopper is arranged below the discharge pipe; a hose is connected to the bottom of the conical material receiving hopper; a spiral tube is arranged on the side surface of the counterweight plate, and connecting grooves connected to the two ends of the spiral tube are opened at both ends; the spiral tubes on the counterweight plates assembled together form spiral ball conveying channels that are connected to each other; side panels are fixed on both opposite sides of the bearing platform; a surrounding plate is fixed on the surface of the lifting plate; a discharge groove is opened on the surface of the lifting plate below the inclined surface of the bearing platform.

[0014] The present invention is further configured as follows: a mounting plate is fixed to the circumferential side surface of the discharge pipe, and guide rods are symmetrically fixed on both sides of the mounting plate on its circumferential side surface; a gear is rotatably arranged on the side surface of the mounting plate; a U-shaped plate is fixed to the side surface of the mounting plate; tooth plates meshing with the gear are slidably arranged on the two guide rods; an upper plug plate and a lower plug plate slidingly matched with the U-shaped plate are respectively fixed on the surfaces of the two tooth plates; a slot plug-in matching with the upper plug plate is opened near the bottom end of the circumferential side surface of the discharge pipe; the lower plug plate slides with the bottom end of the discharge pipe; an L-shaped plate is fixed to the side surface of the mounting plate; one end of the L-shaped plate is fixedly connected to the conical hopper; an annular electromagnetic suction cup electrically connected to the output end of the controller is installed on the side of the L-shaped plate; an iron ring is fixedly connected to the end of one tooth plate; a connecting spring sleeved on the guide rod is fixed between the L-shaped plate and the tooth plate.

[0015] The advantages of the present invention are:

[0016] 1. The present invention realizes the unloading of the configuration plates piece by piece by controlling the synchronous forward and reverse rotation of the first stopper and the second stopper, and realizes the unloading of the counterweight balls one by one by controlling the synchronous reverse movement of the upper plug plate and the lower plug plate, thereby improving the range accuracy of the counterweight adjustment and thus improving the accuracy of the simulation test.

[0017] 2. The present invention evenly arranges multiple lifting components from top to bottom inside the guide tube. During the process of the counterweight plate descending along the guide tube, the multiple lifting components provide a buffering effect to achieve a slow descent of the counterweight plate, thereby preventing the freely falling counterweight plate from damaging the hydraulic cylinder due to a fast descent speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a hydraulic cylinder simulation testing device of the present invention.

[0019] Figure 2 For the present invention Figure 1 A magnified image of area A.

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the structure from the right view perspective.

[0021] Figure 4 For the present invention Figure 3 A magnified view of area B.

[0022] Figure 5 It is a schematic structural diagram of the inspection frame of the present invention.

[0023] Figure 6 For the present invention Figure 5 Magnified view of area C.

[0024] Figure 7It is a schematic diagram of the structure of a part of the inspection frame of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the inspection frame of the present invention from a front view perspective.

[0026] Fig. 9 For the present invention Figure 8 Magnified view of area D.

[0027] Fig.10 It is a structural schematic diagram of the counterweight part of the present invention.

[0028] Fig.11 It is a schematic structural diagram of an assembly of counterweight parts of the present invention.

[0029] Fig.12 It is a schematic structural diagram of the first stopper of the present invention.

[0030] Fig.13 It is a schematic structural diagram of the first stopper of the present invention when viewed from above.

[0031] Fig.14 It is a structural schematic diagram of the lifting assembly of the present invention.

[0032] Fig.15 It is a structural schematic diagram of the lifting part of the present invention.

[0033] Fig.16 It is a schematic structural diagram of the sliding part of the present invention.

[0034] Fig.17 It is a structural schematic diagram of the lock tongue portion of the present invention.

[0035] In the figure: 1, test frame; 2, hydraulic cylinder to be tested; 3, base; 4, base; 5, support plate; 6, slide bar; 7, lifting plate; 8, guide tube; 9, counterweight; 10, bearing platform; 11, partition; 12, guide plate; 13, inclined groove; 14, support spring; 15, sliding ring; 16, slide groove; 17, lifting assembly; 18, lifting part; 19, sliding part; 20, locking tongue part; 21, rotating part rod; 22, first stopper; 23, second stopper; 24, connecting rod; 25, counterweight plate; 26, ear plate; 27, slip ring; 28, chassis; 29, sleeve; 30, fan-shaped baffle; 31, outer arc plate; 32, inner arc plate; 33, arc connecting plate; 34, support rod; 35, guide channel; 36, ear seat; 37, guide groove; 38, lifting block; 39, guide block; 40, extension Extension tube; 41, limit groove; 42, slide column; 43, limit rail; 44, cover; 45, return spring; 46, ear rod; 47, guide ball; 48, T-shaped pressure; 49, square groove; 50, lock tongue; 51, inclined guide groove; 52, extrusion spring; 53, connecting rope; 54, sprocket; 55, chain; 56, U-shaped seat; 57, servo motor; 58, conical receiving hopper; 59, discharge pipe; 6 0. Counterweight ball; 61. Conical hopper; 62. Hose; 63. Spiral tube; 64. Connecting groove; 65. Side plate; 66. Enclosure; 67. Discharge chute; 68. Mounting plate; 69. Guide rod; 70. Gear; 71. U-shaped plate; 72. Tooth plate; 73. Upper insert plate; 74. Lower insert plate; 75. Slot; 76. L-shaped plate; 77. Ring-shaped electromagnetic suction cup; 78. Iron ring; 79. Connecting spring. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] For example, see Figure 1-17 , the present invention provides the following technical solutions:

[0040] A hydraulic cylinder simulation test device, specifically, comprises a test frame 1 and a hydraulic cylinder 2 to be tested which is fixedly mounted on the test frame 1 by fastening bolts; the test frame 1 comprises a top cover 3 and a base 4; a support plate 5 is fixed between the top cover 3 and the base 4; sliding rods 6 are symmetrically fixed on the surface of the base 4; a lifting plate 7 is slidably arranged between the two sliding rods 6; the bottom surface of the lifting plate 7 is fixedly connected to the telescopic end of the hydraulic cylinder 2 to be tested by fastening bolts; guide tubes 8 are symmetrically fixed on the surface of the lifting plate 7; a counterweight part 9 is slidably arranged between the two guide tubes 8; a bearing platform 10 adapted to the counterweight part 9 is fixed on the surface of the lifting plate 7 between the two guide tubes 8; a plurality of partitions 1 are evenly fixed from top to bottom inside the guide tube 8 1; a guide plate 12 is fixed on the surface of the partition 11; oblique grooves 13 are symmetrically provided on the two opposite sides of the guide plate 12 near the bottom thereof; a support spring 14 is fixed on the surface of the partition 11; a sliding ring 15 slidably matched with the inner wall of the guide tube 8 is fixed at the other end of the support spring 14; a sliding groove 16 is symmetrically provided on the side surface of the guide tube 8 between two adjacent partitions 11; a lifting assembly 17 is slidably provided in the sliding groove 16; the lifting assembly 17 is placed above the corresponding sliding ring 15; the lifting assembly 17 includes a lifting part 18 slidably provided in the sliding groove 16; a sliding part 19 slidably provided inside the lifting part 18 and matched with the guide plate 12; a locking tongue part 20 is slidably provided inside the sliding part 19.

[0041] Working principle of the first embodiment:

[0042] By evenly arranging multiple sets of lifting components 17 from top to bottom inside the guide tube 8, when the counterweight part 9 descends along the guide tube 8, the lifting part 18, the sliding part 19 and the locking tongue part 20 in the multiple sets of lifting components 17 cooperate with each other to buffer the falling counterweight part 9, thereby achieving a slow descent of the counterweight plate 9 and preventing the free-falling counterweight plate 9 from damaging the hydraulic cylinder due to a fast descent speed.

[0043] For example 2, please refer to Figure 1-17 , the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a rotating rod 21 is symmetrically and rotatably arranged on the top of the top cover 3; the bottom ends of the two rotating rods 21 are respectively fixed with a first stopper 22 and a second stopper 23 which are rotatably matched with the corresponding sliding rod 6; a connecting rod 24 which is coaxial with the corresponding guide tube 8 is symmetrically fixed to the bottom surface of the top cover 3; the counterweight part 9 includes a counterweight plate 25; the two ends of the counterweight plate 25 are inclined surfaces parallel to each other; the top of the bearing platform 10 is an inclined surface adapted to the end of the counterweight plate 25; two groups of ear plates 26 are fixed to the side surface of the counterweight plate 25; the ends of the two ear plates 26 are fixed with a slip ring 27 which is slidably matched with the corresponding connecting rod 24; the slip ring 27 is slidably matched with the corresponding guide tube 8.

[0044] The first stopper 22 and the second stopper 23 both include a chassis 28 fixed to the bottom end of the rotating rod 21; a sleeve 29 that cooperates with the sliding rod 6 for rotation is fixed to the bottom surface of the chassis 28; a fan-shaped baffle 30 is fixed to the side surface of the chassis 28; an outer arc plate 31 and an inner arc plate 32 coaxial with the chassis 28 are fixed above the chassis 28; an arc connecting plate 33 is fixed to the inner side surface of the inner arc plate 32 and the outer side surface of the outer arc plate 31; a support rod 34 is fixed between the two arc connecting plates 33 and the fan-shaped baffle 30; a guide channel 35 is formed between the outer arc plate 31 and the inner arc plate 32; the connecting rod 24 is slidably arranged in the guide channel 35; the pipe inlet of the guide channel 35 on the first stopper 22 is coplanar with the pipe inlet of the guide channel 35 on the second stopper 23, so that the two connecting rods 24 synchronously enter and exit the corresponding guide channels 35 on the first stopper 22 and the second stopper 23 that rotate in the same direction.

[0045] A controller is installed on the surface of the top cover 3; a sprocket 54 is fixed to the side surface of the rotating rod 21; a chain 55 is arranged between the two sprockets 54 for meshing transmission; a U-shaped seat 56 is fixed to the surface of the top cover 3; a servo motor 57 electrically connected to the output end of the controller is fixedly installed on the top of the U-shaped seat 56; the output end of the servo motor 57 is fixedly connected to the top end of a rotating rod 21.

[0046] Working principle of the second embodiment:

[0047] In the initial state, the inlet of the guide channel 35 on the first stopper 22 is coplanar with the inlet of the guide channel 35 on the second stopper 23, that is, Figure 2 As shown, the two sets of connecting rods 24 are placed between the corresponding fan-shaped baffles 30 and at the corresponding guide channel 35 (i.e., the channel formed between the outer arc plate 31 and the inner arc plate 32 and slidingly matched with the connecting rod 24) at the pipe inlet. The hydraulic cylinder 2 to be tested is controlled to start so that the guide tube 8 rises to fit with the bottom surface of the fan-shaped baffle 30. At this time, the fan-shaped baffle 30 can rotate freely with the rotating rod 21.

[0048] The control starts the servo motor 57 to drive the corresponding rotating rod 21 to rotate counterclockwise, thereby driving the corresponding sprocket 54 to rotate counterclockwise, and driving another set of sprockets 54 to rotate synchronously in the same direction through the chain 55, so that the two sets of guide channels 35 both rotate counterclockwise toward the corresponding connecting rod 24. The connecting rod 24 is placed in the corresponding guide channel 35, and the outer arc plate 31 and the inner arc plate 32 are slidably placed directly below the slip ring 27 corresponding to the penultimate set of counterweights 9. During this process, the bottom of the connecting rod 24 is blocked by the fan-shaped baffle 30.

[0049] The two rotating rods 21 are controlled to continue to rotate counterclockwise together with the first stop portion 22 and the second stop portion 23. When the fan-shaped baffle 30 is disengaged from the corresponding connecting rod 24, the corresponding connecting rod 24 is still placed in the corresponding guide channel 35. The servo motor 57 is controlled to stop. Under the action of gravity, the slip ring 27 on the lowest counterweight portion 9 falls onto the corresponding guide tube 8. The slip ring 27 on the second-to-last group of counterweight portions 9 is blocked by the corresponding outer arc plate 31 and the inner arc plate 32. The servo motor 57 is controlled to start and rotate clockwise to reset. After resetting, the fan-shaped baffle 30 blocks the bottom end of the connecting rod 24 again, and the connecting rod 24 is disengaged from the corresponding guide channel 35. Under the action of gravity, the second-to-last group of counterweight portions 9 falls until its corresponding slip ring 27 falls to the surface of the fan-shaped baffle 30 and is blocked, completing the piece-by-piece unloading of the counterweight portions 9.

[0050] After completing the simulation test of the hydraulic cylinder 2 to be tested, the remaining counterweight parts 9 are all unloaded onto the lifting plate 7 according to the above operation. In order to prevent the hydraulic cylinder 2 to be tested from being damaged by pressure, a support plate can be placed between the lifting plate 7 and the base 4 for support. The servo motor 57 is controlled to rotate so that the fan-shaped baffle 30 is separated from the bottom end of the connecting rod 24. At the same time, the connecting rod 24 is separated from the corresponding guide channel 35. At this time, there is no foreign object blocking the connecting rod 24 and the corresponding guide tube 8. The ear plate 26 of the lowest counterweight part 9 is fixed and lifted upward by an external lifting device, as shown in FIG. Figure 4 As shown, since an inclined guide groove 51 is provided on the side of the lock tongue 50, all the counterweight parts 9 squeeze the lock tongue 50 in turn during the rising process, so that it is accommodated in the square groove 49, and the squeezing spring 52 is compressed. When the counterweight part 9 is separated from the corresponding lock tongue 50, the lock tongue 51 is driven to slide out of the square groove 49 under the elastic restoring force of the squeezing spring 52, and the corresponding connecting rope 53 is straightened. When all the counterweight parts 9 slide up into the connecting rod 24, the servo motor 57 is controlled to start and reset to the initial state, thereby completing the rapid recovery of the counterweight part 9.

[0051] For example 3, please refer to Figure 1-17, the third embodiment of the present invention is improved as follows on the basis of the second embodiment. Specifically, ear seats 36 slidably matched with the corresponding slide rods 6 are symmetrically fixed to the side surfaces of the lifting plate 7; guide grooves 37 are symmetrically provided on both sides of the inner wall of the slide groove 16; the lifting part 18 includes a lifting block 38 slidably arranged in the slide groove 16; guide blocks 39 slidably matched with the guide grooves 37 are symmetrically fixed on the two opposite sides of the lifting block 38; an extension tube 40 is provided through and connected to the side surface of the lifting block 38; a limiting groove 41 is symmetrically provided on the inner wall of the extension tube 40; the sliding part 19 includes a sliding column 42 slidably matched with the inner wall of the extension tube 40; a limiting rail 43 slidably matched with the limiting groove 41 is symmetrically fixed to the side surface of the sliding column 42; a blocking cover 44 is fixed to one end of the sliding column 42; a return spring 45 sleeved on the extension tube 40 is fixed to the side surface of the blocking cover 44 and the lifting block 38; an ear rod 46 is fixed to the side surface of the blocking cover 44; and a guide ball 47 is fixed to the end of the ear rod 46.

[0052] A T-shaped pressure plate 48 is symmetrically fixed on the side surface of the blocking cover 44; a square groove 49 is provided inside the sliding column 42; the locking tongue portion 20 includes a locking tongue 50 slidably arranged in the square groove 49; an oblique guide groove 51 is provided on the side surface of the locking tongue 50; an extrusion spring 52 is fixed between the other opposite side surface of the locking tongue 50 and the inner wall of the square groove 49, and a connecting rope 53 is symmetrically fixedly connected between the locking tongue 50 and the inner wall of the square groove 49.

[0053] Working principle of the third embodiment:

[0054] In the initial state, the lock tongue 50 slides out along the square groove 49 under the elastic force of the extrusion spring 52, and the corresponding connecting rope 53 is straightened. Under the elastic force of the support spring 14, the sliding ring 15 and the lifting assembly 17 are driven to slide and rise along the guide tube 8. Under the elastic force of the return spring 45, the guide ball 47 is pressed against the side of the guide plate 12. When the counterweight part 9 slides down along the two guide tubes 8, when the sliding ring 27 presses on the corresponding lock tongue 50, the corresponding lifting assembly 17 is driven to descend, so that the support spring 14 is compressed. , plays a buffering role. When the guide ball 47 slides onto the inclined groove 13, the sliding part 19 and the locking tongue part 20 are driven to slide synchronously toward the direction of the inclined groove 13 under the elastic force of the return spring 45, so that the locking tongue 50 is separated from the corresponding sliding ring 27, and the corresponding counterweight part 9 falls and contacts with the next group of lifting components 17 to be further buffered. When the counterweight part 9 falls, the lifting part 18, the sliding part 19 and the locking tongue part 20 in the lifting component 17 above it slide and rise along the guide tube 8 under the elastic return force of the support spring 14 to be reset.

[0055] To summarize, by evenly arranging multiple sets of lifting components 17 from top to bottom inside the guide tube 8, during the process of the counterweight plate 25 descending along the guide tube 8, the multiple sets of lifting components 17 provide a buffering effect, thereby achieving a slow descent of the counterweight plate 25, thereby preventing the freely falling counterweight plate 25 from damaging the hydraulic cylinder 2 to be tested due to its fast descent speed.

[0056] Example 4, please refer to Figure 1-17 , this fourth embodiment makes the following improvements on the basis of the third embodiment. Specifically, a conical receiving hopper 58 is installed on the surface of the top cover 3; a discharge pipe 59 is connected to the bottom of the conical receiving hopper 58; a number of counterweight balls 60 that slide with the discharge pipe 59 are placed inside the conical receiving hopper 58; a conical receiving hopper 61 is arranged below the discharge pipe 59; a hose 62 is connected to the bottom of the conical receiving hopper 61; a spiral tube 63 is arranged on the side surface of the counterweight plate 25, and connecting grooves 64 connected to the two ends of the spiral tube 63 are opened at both ends; the spiral tubes 63 on the counterweight plates 25 assembled together form a spiral ball conveying channel that is connected to each other; side plates 65 are fixed to the two opposite sides of the load-bearing platform 10; a surrounding plate 66 is fixed to the surface of the lifting plate 7; a discharge groove 67 is opened on the surface of the lifting plate 7 below the inclined surface of the load-bearing platform 10.

[0057] The side surface of the discharge pipe 59 is fixed with a mounting plate 68, and the side surface thereof is symmetrically fixed with guide rods 69 on both sides of the mounting plate 68; a gear 70 is rotatably arranged on the side surface of the mounting plate 68; a U-shaped plate 71 is fixed on the side surface of the mounting plate 68; a toothed plate 72 meshing with the gear 70 is slidably arranged on both guide rods 69; an upper insert plate 73 and a lower insert plate 74 slidably matched with the U-shaped plate 71 are respectively fixed on the surface of the two toothed plates 72; a side surface of the discharge pipe 59 is provided near its bottom end There is a slot 75 that is plugged into the upper plug plate 73; the lower plug plate 74 is slidably matched with the bottom end of the discharge pipe 59; an L-shaped plate 76 is fixed to the side of the mounting plate 68; one end of the L-shaped plate 76 is fixedly connected to the conical receiving hopper 61; an annular electromagnetic suction cup 77 that is electrically connected to the output end of the controller is installed on the side of the L-shaped plate 76; an iron ring 78 is fixedly connected to the end of a tooth plate 72; a connecting spring 79 mounted on the guide rod 69 is fixed between the L-shaped plate 76 and the tooth plate 72.

[0058] Working principle of the fourth embodiment:

[0059] The counterweight parts 9 that descend in sequence are piled up on the guide tube 8, and the spiral tubes 63 on the counterweight plates 25 assembled together form a spiral ball conveying channel that is interconnected. The bottom end of the hose 62 is placed in the connecting groove 64 above the top counterweight plate 25, and the annular electromagnetic suction cup 77 is controlled to be electrically attracted to the iron ring 78, so that the lower plug plate 74 slides in the direction close to the annular electromagnetic suction cup 77, and the connecting spring 79 is compressed, so that the bottom end of the discharge pipe 59 is opened, and the lowest counterweight ball 30 falls into the conical receiving hopper 61, and enters the spiral ball conveying channel through the hose 62 and the connecting groove 64 in sequence. The lowest counterweight ball 30 is blocked by the bearing platform 10, and the lower plug plate During the sliding process, 74 together with the corresponding tooth plate 72 drives another set of tooth plates 72 to connect to the upper plug plate 73 through the gear 70 to slide in the direction away from the annular electromagnetic suction cup 77, so that the upper plug plate 73 is inserted into the slot 75, thereby blocking the second-to-last counterweight ball 60; the annular electromagnetic suction cup 77 is controlled to lose power, and under the elastic reset force of the connecting spring 79, the lower plug plate 74 is driven to slide and block the bottom end of the discharge pipe 59. At the same time, the upper plug plate 73 slides out of the discharge pipe 59, and the second-to-last counterweight ball 60 falls onto the lower plug plate 74, completing the unloading of the counterweight balls 60 one by one, thereby improving the range accuracy of the counterweight adjustment, thereby improving the accuracy of the simulation test.

[0060] By placing a collection box under the discharge chute 67, the counterweight part 9 is separated from the bottom counterweight plate 25 and the supporting platform 10 during the process of rising and recovering, and the counterweight balls 60 in the spiral ball conveying channel fall through the guidance of the supporting platform 10, so that the falling counterweight balls 60 fall into the collection box through the discharge chute 67 and are collected. The counterweight balls 60 in the collection box are poured into the conical collecting hopper 58, thereby completing the rapid recovery of the counterweight balls 60.

[0061] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0065] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic cylinder simulation test device, comprising a test frame (1) and a hydraulic cylinder (2) to be tested fixedly mounted on the test frame (1) by fastening bolts; characterized in that: The inspection frame (1) comprises a top cover (3) and a base (4); a support plate (5) is fixed between the top cover (3) and the base (4); sliding rods (6) are symmetrically fixed on the surface of the base (4); a lifting plate (7) is slidably arranged between the two sliding rods (6); the bottom surface of the lifting plate (7) is fixedly connected to the telescopic end of the hydraulic cylinder (2) to be tested by fastening bolts; The surface of the lifting plate (7) is symmetrically fixed with guide tubes (8); a counterweight portion (9) is slidably arranged between the two guide tubes (8); a bearing platform (10) adapted to the counterweight portion (9) is fixed on the surface of the lifting plate (7) between the two guide tubes (8); A plurality of partitions (11) are evenly fixed from top to bottom inside the guide tube (8); a guide plate (12) is fixed on the surface of the partition (11); the guide plate (12) is symmetrically provided with oblique grooves (13) on two opposite side surfaces near the bottom thereof; a support spring (14) is fixed on the surface of the partition (11); a sliding ring (15) that is slidably matched with the inner wall of the guide tube (8) is fixed on the other end of the support spring (14); The guide tube (8) is symmetrically provided with a slide groove (16) on the side surface thereof between two adjacent partitions (11); a lifting assembly (17) is slidably arranged in the slide groove (16); and the lifting assembly (17) is placed above the corresponding sliding ring (15); The lifting assembly (17) comprises a lifting part (18) slidably arranged in the sliding groove (16); a sliding part (19) adapted to match the guide plate (12) is slidably arranged inside the lifting part (18); and a locking tongue part (20) is slidably arranged inside the sliding part (19).

2. A hydraulic cylinder simulation testing device according to claim 1, characterized in that: A rotating rod (21) is symmetrically and rotatably provided on the top of the top cover (3); a first stopper (22) and a second stopper 2 (3) which are rotatably matched with the corresponding sliding rod (6) are respectively fixed at the bottom ends of the two rotating rods (21); a connecting rod (24) which is coaxial with the corresponding guide tube (8) is symmetrically fixed on the bottom surface of the top cover (3); The counterweight part (9) comprises a counterweight plate (25); the two ends of the counterweight plate (25) are inclined surfaces parallel to each other; the top of the bearing platform (10) is an inclined surface matched with the end of the counterweight plate (25); two groups of ear plates (26) are fixed on the peripheral side of the counterweight plate (25); the ends of the two ear plates (26) are fixed with slip rings (27) that are slidably matched with the corresponding connecting rods (24); the slip rings (27) are slidably matched with the corresponding guide tubes (8).

3. A hydraulic cylinder simulation testing device according to claim 2, characterized in that: The first stopper (22) and the second stopper (23) both comprise a chassis (28) fixed to the bottom end of the rotating rod (21); a sleeve (29) rotatably matched with the sliding rod (6) is fixed to the bottom surface of the chassis (28); a fan-shaped baffle (30) is fixed to the side surface of the chassis (28); an outer arc plate (31) and an inner arc plate (32) coaxial with the chassis (28) are fixed above the chassis (28); An arc-shaped connecting plate (33) is fixed to the inner side surface of the inner arc-shaped plate (32) and the outer side surface of the outer arc-shaped plate (31); a support rod (34) is fixed between the two arc-shaped connecting plates (33) and the fan-shaped baffle (30); a guide channel (35) is formed between the outer arc-shaped plate (31) and the inner arc-shaped plate (32); the connecting rod (24) is slidably arranged in the guide channel (35); the pipe inlet of the guide channel (35) on the first stopper (22) and the pipe inlet of the guide channel (35) on the second stopper (23) are coplanar, so that the two connecting rods (24) synchronously enter and exit the corresponding guide channels (35) on the first stopper (22) and the second stopper (23) rotating in the same direction.

4. A hydraulic cylinder simulation testing device according to claim 3, characterized in that: The lifting plate (7) is symmetrically fixed with ear seats (36) that are slidably matched with the corresponding slide rod (6) on the peripheral side surface; the inner wall of the slide groove (16) is symmetrically provided with guide grooves (37); the lifting part (18) includes a lifting block (38) that is slidably arranged in the slide groove (16); guide blocks (39) that are slidably matched with the guide groove (37) are symmetrically fixed on two opposite side surfaces of the lifting block (38); An extension tube (40) is provided through and in communication with the side of the lifting block (38); a limiting groove (41) is symmetrically provided on the inner wall of the extension tube (40); the sliding portion (19) comprises a sliding column (42) slidably matched with the inner wall of the extension tube (40); a limiting rail (43) slidably matched with the limiting groove (41) is symmetrically fixed on the side surface of the sliding column (42); a blocking cover (44) is fixed at one end of the sliding column (42); a return spring (45) sleeved on the extension tube (40) is fixed to the side of the blocking cover (44) and the lifting block (38); an ear rod (46) is fixed to the side of the blocking cover (44); and a guide ball (47) is fixed at the end of the ear rod (46).

5. A hydraulic cylinder simulation testing device according to claim 4, characterized in that: A T-shaped pressure plate (48) is symmetrically fixed on the side surface of the blocking cover (44); a square groove (49) is provided inside the sliding column (42); the locking tongue portion (20) includes a locking tongue (50) slidably arranged in the square groove (49); an oblique guide groove (51) is provided on the side surface of the locking tongue (50); an extrusion spring (52) is fixed between the other opposite side surface of the locking tongue (50) and the inner wall of the square groove (49), and a connecting rope (53) is symmetrically fixedly connected between the locking tongue (50) and the inner wall of the square groove (49).

6. A hydraulic cylinder simulation testing device according to claim 5, characterized in that: A controller is mounted on the surface of the top cover (3); a sprocket (54) is fixed on the peripheral side of the rotating rod (21); a chain (55) is arranged between the two sprockets (54) for meshing transmission; a U-shaped seat (56) is fixed on the surface of the top cover (3); a servo motor (57) electrically connected to the output end of the controller is fixedly mounted on the top of the U-shaped seat (56); and the output end of the servo motor (57) is fixedly connected to the top end of a rotating rod (21).

7. A hydraulic cylinder simulation testing device according to claim 6, characterized in that: A conical material receiving hopper (58) is installed on the surface of the top cover (3); a discharge pipe (59) is arranged at the bottom of the conical material receiving hopper (58); a plurality of weighted balls (60) are placed inside the conical material receiving hopper (58) and are slidably matched with the discharge pipe (59); A conical receiving hopper (61) is provided below the discharge pipe (59); a hose (62) is provided at the bottom of the conical receiving hopper (61); a spiral tube (63) is provided on the side surface of the counterweight plate (25), and both ends of the spiral tube (63) are provided with connecting grooves (64) connected to the two ends of the spiral tube (63); the spiral tubes (63) on the counterweight plates (25) assembled together form a spiral ball conveying channel that is connected to each other; Side plates (65) are fixed on two opposite sides of the bearing platform (10); a surrounding plate (66) is fixed on the surface of the lifting plate (7); and a discharge trough (67) is provided on the surface of the lifting plate (7) below the inclined surface of the bearing platform (10).

8. A hydraulic cylinder simulation testing device according to claim 7, characterized in that: A mounting plate (68) is fixed to the side surface of the discharge pipe (59), and guide rods (69) are symmetrically fixed to the side surfaces of the discharge pipe (59) on both sides of the mounting plate (68); a gear (70) is rotatably arranged on the side surface of the mounting plate (68); a U-shaped plate (71) is fixed to the side surface of the mounting plate (68); tooth plates (72) meshing with the gear (70) are slidably arranged on both guide rods (69); an upper plug plate (73) and a lower plug plate (74) slidably matched with the U-shaped plate (71) are respectively fixed to the surfaces of the two tooth plates (72); a slot (75) pluggable with the upper plug plate (73) is provided on the side surface of the discharge pipe (59) near its bottom end; the lower plug plate (74) slidably matches with the bottom end of the discharge pipe (59); An L-shaped plate (76) is fixed to the side of the mounting plate (68); one end of the L-shaped plate (76) is fixedly connected to the conical receiving hopper (61); an annular electromagnetic suction cup (77) electrically connected to the output end of the controller is installed on the side of the L-shaped plate (76); an iron ring (78) is fixedly connected to the end of the tooth plate (72); a connecting spring (79) sleeved on the guide rod (69) is fixed between the L-shaped plate (76) and the tooth plate (72).

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