A push-pull balance cylinder testing apparatus
By designing a push-pull balance cylinder testing device, the problem that existing equipment can only test a single type of balance cylinder was solved, and efficient and compatible testing of push and pull balance cylinders was achieved, thus improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN NAILIT AUTOMATION EQUIPMENT CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-07
AI Technical Summary
Existing balance cylinder testing equipment can only test a single type of balance cylinder and cannot simultaneously test thrust and tension balance cylinders, resulting in low testing efficiency.
A push-pull balancing cylinder testing device was designed, comprising a fixed bracket, a swing arm, and a swing drive device. It can test the push and pull balancing cylinders simultaneously or separately. The swing drive device drives the swing arm to swing back and forth, realizing the extension and retraction movement of the push and pull balancing cylinders.
It improves testing efficiency and enables efficient compatibility testing of thrust and tension balance cylinders, suitable for shipment inspection and life testing.
Smart Images
Figure CN224471250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a push-pull balance cylinder testing device. Background Technology
[0002] A robotic arm is a mechatronic device that mimics the functions of a human arm, wrist, and hand. During operation, due to its own weight and load, it is quite strenuous to maintain the required position and posture. Therefore, existing robotic arms are generally equipped with nitrogen-type balance cylinders (also known as nitrogen springs). Nitrogen-type balance cylinders can improve the load capacity and motion accuracy of the robotic arm, ensure the stability and reliability of the robotic arm, and extend the service life of the robotic arm.
[0003] Existing nitrogen-type balancing cylinders can include thrust balancing cylinders and tension balancing cylinders. During the production of these two types of balancing cylinders, life tests or shipment inspection tests need to be performed separately. However, existing balancing cylinder testing equipment can only test a single type of balancing cylinder. For example, a nitrogen spring testing device with patent application number 2022115024304 includes components such as a drive assembly, a connecting rod, and a fixed base. The drive assembly can drive the nitrogen spring to extend and retract via the connecting rod, and can also drive the nitrogen spring to rotate on the fixed base. This allows the movement of the nitrogen spring to be the same as its movement in an industrial robot, thus ensuring the testing effect of the nitrogen spring. However, this nitrogen spring testing device can only test one type of thrust balancing cylinder, and cannot test tension balancing cylinders, nor can it test both thrust and tension balancing cylinders simultaneously. Its compatibility still needs to be improved. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a push-pull balance cylinder testing device that can test the thrust balance cylinder and the tension balance cylinder separately or simultaneously, has high compatibility, and can improve testing efficiency.
[0005] To achieve the above objectives, this utility model provides a push-pull balance cylinder testing device, including a fixed bracket, a swing arm, and a swing drive device. The front end of the fixed bracket has at least one first thrust cylinder mounting hole and a first thrust cylinder connector located at the first thrust cylinder mounting hole for connection to the lower end of the thrust balance cylinder. The rear end of the fixed bracket has at least one first pull cylinder mounting hole and a first pull cylinder connector located at one of the first pull cylinder mounting holes for connection to the rear end of the pull balance cylinder. The swing arm is rotatably mounted on the front end of the fixed bracket. The swing arm includes a swing arm turntable, a thrust cylinder swing arm connecting part, and a pull cylinder swing arm connecting part. The connecting part is connected to the upper end of the swing arm turntable part, the tension cylinder swing arm connecting part is connected to the side of the swing arm turntable part, the thrust cylinder swing arm connecting part is provided with at least one second thrust cylinder mounting hole and a second thrust cylinder connector located at one of the second thrust cylinder mounting holes and used to connect with the upper end of the thrust balance cylinder, the tension cylinder swing arm connecting part is provided with at least one second tension cylinder mounting hole and a second tension cylinder connector located at one of the second tension cylinder mounting holes and used to connect with the front end of the tension balance cylinder, the swing drive device is installed on the other side of the front end of the fixed bracket, the swing drive device is connected to the swing arm turntable part of the swing arm and can drive the entire swing arm to swing back and forth.
[0006] Preferably, the swing drive device includes a motor and a reducer, the rotation shaft of the motor is connected to the input shaft of the reducer, and the rotation output part of the reducer is connected to the swing arm turntable part of the swing arm.
[0007] Preferably, the motor is fixedly mounted on the reducer via a motor mounting plate.
[0008] Preferably, the fixed bracket includes a base plate, a first upright plate, and a second upright plate. The first upright plate and the second upright plate are connected parallel to each other on the base plate. A space for accommodating the swing arm and the tension balance cylinder is formed between the first upright plate and the second upright plate. The first thrust cylinder mounting hole is located at the front end of the first upright plate, and the first tension cylinder mounting holes are located at the rear ends of the first upright plate and the rear ends of the second upright plate, respectively. The swing drive device is installed at the front end of the second upright plate.
[0009] Preferably, a swing arm pivot is provided between the first upright plate and the swing arm turntable of the swing arm. One end of the swing arm pivot is fixedly installed on the first upright plate, and the other end of the swing arm pivot is rotatably connected to the swing arm turntable of the swing arm through a swing arm bearing.
[0010] Preferably, reinforcing ribs are provided between the first upright plate and the bottom plate, and between the second upright plate and the bottom plate.
[0011] Preferably, both the first thrust cylinder connector and the second thrust cylinder connector include a thrust cylinder connecting shaft and a thrust cylinder limiting pressure plate. The thrust cylinder connecting shaft is fixed in the corresponding first thrust cylinder mounting hole and second thrust cylinder mounting hole, respectively, and the thrust cylinder limiting pressure plate is installed at the outer shaft end of the thrust cylinder connecting shaft.
[0012] Preferably, the first tension cylinder connector includes a tension cylinder rear connecting shaft, a rear connecting bearing, and a rear connecting pressure plate. The tension cylinder rear connecting shaft is rotatably mounted in the corresponding first tension cylinder mounting hole via the rear connecting bearing. The rear connecting pressure plate is mounted in the corresponding first tension cylinder mounting hole and is located outside the tension cylinder rear connecting shaft and the rear connecting bearing.
[0013] Preferably, the second tension cylinder connector includes a tension cylinder front connecting shaft and a front connecting bearing. The tension cylinder front connecting shaft is installed in the corresponding second tension cylinder mounting hole, and the front connecting bearing is installed on the tension cylinder front connecting shaft.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This utility model has a reasonable structural design. The side can be equipped with the thrust balance cylinder to be tested, and the middle can be equipped with the tension balance cylinder to be tested. The swing drive device can drive the swing arm to swing back and forth, thereby driving the piston rod of the thrust balance cylinder and / or tension balance cylinder to be tested to perform telescopic movement. This utility model can test the thrust balance cylinder and tension balance cylinder individually or simultaneously. It has high compatibility, greatly improves testing efficiency, and is very convenient to use. It can be used for the shipment inspection test and service life test of thrust balance cylinders and tension balance cylinders. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the push-pull balance cylinder testing device provided in this embodiment of the utility model;
[0018] Figure 2 This is a top view of the push-pull balance cylinder testing device provided in this embodiment of the utility model;
[0019] Figure 3 This is a top view of the push-pull balance cylinder testing device provided in this embodiment of the utility model;
[0020] Figure 4 yes Figure 3 Cross-sectional view along line AA;
[0021] Figure 5 yes Figure 3 Cross-sectional view along the BB line;
[0022] Figure 6 yes Figure 3 Cross-sectional view along the CC line. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] Please refer to Figure 1 The present invention provides a push-pull balance cylinder testing device, including a fixed bracket 1, a swing arm 2, a swing drive device 3, a first thrust cylinder connector 4, a second thrust cylinder connector 5, a first pull cylinder connector 6, and a second pull cylinder connector 7, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.
[0025] like Figure 1 and Figure 2 As shown, the fixed bracket 1 may include a base plate 11, a first upright plate 12, and a second upright plate 13. The first upright plate 12 and the second upright plate 13 are connected parallel to each other on the base plate 11, and a space for accommodating the swing arm 2 and the tension balance cylinder 200 is formed between the first upright plate 12 and the second upright plate 13. The front end of the first upright plate 12 is provided with a first thrust cylinder mounting hole 15, and the rear end of the first upright plate 12 and the rear end of the second upright plate 13 are respectively provided with two first tension cylinder mounting holes 16 spaced apart.
[0026] Preferably, reinforcing ribs 14 can be provided between the first upright plate 12 and the base plate 11, and between the second upright plate 13 and the base plate 11, which can increase the structural strength of the fixed bracket 1.
[0027] like Figure 1 and Figure 2As shown, the swing arm 2 is rotatably mounted on the front end of the fixed bracket 1. The swing arm 2 may include a swing arm turntable 21, a thrust cylinder swing arm connecting part 22, and a tension cylinder swing arm connecting part 23. The thrust cylinder swing arm connecting part 22 is connected to the upper end of the swing arm turntable 21, and the tension cylinder swing arm connecting part 23 is connected to the side of the swing arm turntable 21, so that the entire swing arm 2 can roughly form an L-shaped structure. Among them, the thrust cylinder swing arm connecting part 22 is provided with two second thrust cylinder mounting holes 24 arranged vertically and vertically, and the tension cylinder swing arm connecting part 23 is provided with a second tension cylinder mounting hole 25.
[0028] like Figures 1 to 3 As shown, the swing drive device 3 is installed at the front end of the second upright plate 13. The swing drive device 3 may include a motor 31 and a reducer 32. The rotation shaft of the motor 31 is connected to the input shaft of the reducer 32, and the rotation output part of the reducer 32 is connected to the swing arm turntable part 21 of the swing arm 2. The motor 31 is fixedly mounted on the reducer 32 through a motor mounting plate 33. The motor 31 can drive the swing arm 2 to swing back and forth through the reducer 32.
[0029] In order to improve the swing stability of swing arm 2, such as Figure 2 and Figure 4 As shown, a swing arm rotating shaft 8 may also be provided between the first upright plate 12 and the swing arm turntable 21 of the swing arm 2. One end of the swing arm rotating shaft 8 is fixedly installed on the first upright plate 12, and the other end of the swing arm rotating shaft 8 is rotatably connected to the swing arm turntable 21 of the swing arm 2 through the swing arm bearing 9.
[0030] like Figure 1 As shown, the first thrust cylinder connector 4 is installed at the first thrust cylinder mounting hole 15 of the first vertical plate 12, and the second thrust cylinder connector 5 is installed at one of the second thrust cylinder mounting holes 24 of the swing arm 2. The first thrust cylinder connector 4 can be used to connect to the lower end of the thrust balance cylinder 100, and the second thrust cylinder connector 5 can be used to connect to the upper end of the thrust balance cylinder 100.
[0031] Specifically, such as Figure 2 and Figure 4 As shown, both the first thrust cylinder connector 4 and the second thrust cylinder connector 5 may include a thrust cylinder connecting shaft 51 and a thrust cylinder limiting pressure plate 52. The thrust cylinder connecting shaft 51 is fixed in the corresponding first thrust cylinder mounting hole 15 and second thrust cylinder mounting hole 24, respectively. The thrust cylinder limiting pressure plate 52 is detachably installed at the outer shaft end of the thrust cylinder connecting shaft 51, which can be used to limit the end of the thrust balance cylinder 100. The outer shaft of the thrust cylinder connecting shaft 51 can be inserted into the end hole of the thrust balance cylinder 100.
[0032] like Figure 1As shown, the first tension cylinder connector 6 is installed at one of the first tension cylinder mounting holes 16 on the first vertical plate 12 and the second vertical plate 13, and the second tension cylinder connector 7 is installed at the second tension cylinder mounting hole 25 on the swing arm 2. The first tension cylinder connector 6 can be used to connect to the rear end of the tension balance cylinder 200, and the second tension cylinder connector 7 can be used to connect to the front end of the tension balance cylinder 200.
[0033] Specifically, such as Figure 2 and Figure 6 As shown, the first tension cylinder connector 6 may include a tension cylinder rear connecting shaft 61, a rear connecting bearing 62, and a rear connecting pressure plate 63. The tension cylinder rear connecting shaft 61 can be rotatably installed in the corresponding first tension cylinder mounting hole 16 through the rear connecting bearing 62. The rear connecting pressure plate 63 is installed in the corresponding first tension cylinder mounting hole 16 and is located outside the tension cylinder rear connecting shaft 61 and the rear connecting bearing 62. The two sets of tension cylinder rear connecting shafts 61 can be installed in the holes on both sides of the rear end of the tension balance cylinder 200, respectively.
[0034] like Figure 2 and Figure 5 As shown, the second tension cylinder connector 7 may include a tension cylinder front connecting shaft 71 and a front connecting bearing 72. The tension cylinder front connecting shaft 71 is installed in the corresponding second tension cylinder mounting hole 25, and the front connecting bearing 72 is installed on the tension cylinder front connecting shaft 71. The front end hole of the tension balance cylinder 200 can be rotatably installed on the tension cylinder front connecting shaft 71 through the front connecting bearing 72.
[0035] It should be noted that the number of mounting holes 15 for the first thrust cylinder, 24 for the second thrust cylinder, 16 for the first tension cylinder, and 25 for the second tension cylinder can be increased or decreased arbitrarily according to actual needs, and is not limited to this embodiment. The provision of multiple mounting holes can accommodate thrust and tension balance cylinders with different strokes.
[0036] During measurement, the thrust balance cylinder 100 to be tested can be installed on the side of the testing equipment, and the tension balance cylinder 200 to be tested can be installed in the middle. The swing drive device 3 is connected to the swing arm turntable 21 of the swing arm 2 and can drive the entire swing arm 2 to swing back and forth, thereby driving the piston rod of the thrust balance cylinder and / or tension balance cylinder to be tested to perform telescopic movement.
[0037] Preferably, the swing angle and speed of the swing arm 2 can be controlled by existing control equipment such as a computer and control box to regulate the motor 31. When the swing arm is at 90°, the stroke of the thrust balance cylinder 100 is the longest and the stroke of the tension balance cylinder 200 is the shortest. When swinging forward, the distance between the two ends of the thrust balance cylinder 100 gradually decreases and the distance between the two ends of the tension balance cylinder 200 gradually increases.
[0038] Both types of balance cylinders must be deflated before installation, and then refilled after installation and adjustment to ensure they return to the minimum distance position during testing.
[0039] During operation, this testing equipment can measure either the thrust balance cylinder 100 or the tension balance cylinder 200 individually. If the strokes are the same, it can also measure both the thrust balance cylinder 100 and the tension balance cylinder 200 simultaneously. When the two balance cylinders are measured at the same time, the directions of the forces are exactly opposite, canceling each other out, which can reduce the load on the motor 31 and thus save more electricity.
[0040] In summary, the present invention has a reasonable structural design, which can test the thrust balance cylinder and the tension balance cylinder separately or simultaneously. It has high compatibility, greatly improves testing efficiency, and is very convenient to use. It can be used for the shipment inspection test and service life test of thrust balance cylinders and tension balance cylinders.
[0041] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
Claims
1. A push-pull balance cylinder testing device, characterized in that: The device includes a fixed bracket, a swing arm, and a swing drive mechanism. The front end of the fixed bracket has at least one first thrust cylinder mounting hole and a first thrust cylinder connector located at the first thrust cylinder mounting hole for connection to the lower end of a thrust balance cylinder. The rear end of the fixed bracket has at least one first tension cylinder mounting hole and a first tension cylinder connector located at one of the first tension cylinder mounting holes for connection to the rear end of a tension balance cylinder. The swing arm is rotatably mounted on the front end of the fixed bracket. The swing arm includes a swing arm turntable, a thrust cylinder swing arm connecting part, and a tension cylinder swing arm connecting part. The thrust cylinder swing arm connecting part is connected to the upper end of the swing arm turntable. The tension cylinder swing arm connecting part is connected to the side of the swing arm turntable part. The thrust cylinder swing arm connecting part is provided with at least one second thrust cylinder mounting hole and a second thrust cylinder connector located at one of the second thrust cylinder mounting holes and used to connect with the upper end of the thrust balance cylinder. The tension cylinder swing arm connecting part is provided with at least one second tension cylinder mounting hole and a second tension cylinder connector located at one of the second tension cylinder mounting holes and used to connect with the front end of the tension balance cylinder. The swing drive device is installed on the other side of the front end of the fixed bracket. The swing drive device is connected to the swing arm turntable part of the swing arm and can drive the entire swing arm to swing back and forth.
2. The push-pull balance cylinder testing device according to claim 1, characterized in that: The swing drive device includes a motor and a reducer. The rotation shaft of the motor is connected to the input shaft of the reducer, and the rotation output part of the reducer is connected to the swing arm turntable part of the swing arm.
3. The push-pull balance cylinder testing device according to claim 2, characterized in that: The motor is fixedly mounted on the reducer via a motor mounting plate.
4. The push-pull balance cylinder testing device according to claim 1, characterized in that: The fixed bracket includes a base plate, a first upright plate, and a second upright plate. The first upright plate and the second upright plate are connected parallel to each other on the base plate. A space for accommodating the swing arm and the tension balance cylinder is formed between the first upright plate and the second upright plate. The first thrust cylinder mounting hole is located at the front end of the first upright plate, and the first tension cylinder mounting holes are located at the rear end of the first upright plate and the rear end of the second upright plate, respectively. The swing drive device is installed at the front end of the second upright plate.
5. The push-pull balance cylinder testing device according to claim 4, characterized in that: A swing arm pivot is provided between the first upright plate and the swing arm turntable of the swing arm. One end of the swing arm pivot is fixedly installed on the first upright plate, and the other end of the swing arm pivot is rotatably connected to the swing arm turntable of the swing arm through a swing arm bearing.
6. The push-pull balance cylinder testing device according to claim 4, characterized in that: Reinforcing ribs are provided between the first upright plate and the bottom plate, and between the second upright plate and the bottom plate.
7. The push-pull balance cylinder testing device according to claim 1, characterized in that: The first thrust cylinder connector and the second thrust cylinder connector both include a thrust cylinder connecting shaft and a thrust cylinder limiting pressure plate. The thrust cylinder connecting shaft is fixed in the corresponding first thrust cylinder mounting hole and second thrust cylinder mounting hole, respectively. The thrust cylinder limiting pressure plate is installed at the outer shaft end of the thrust cylinder connecting shaft.
8. The push-pull balance cylinder testing device according to claim 1, characterized in that: The first tension cylinder connector includes a tension cylinder rear connecting shaft, a rear connecting bearing, and a rear connecting pressure plate. The tension cylinder rear connecting shaft is rotatably mounted in the corresponding first tension cylinder mounting hole via the rear connecting bearing. The rear connecting pressure plate is mounted in the corresponding first tension cylinder mounting hole and is located outside the tension cylinder rear connecting shaft and the rear connecting bearing.
9. The push-pull balance cylinder testing device according to claim 1, characterized in that: The second tension cylinder connector includes a tension cylinder front connecting shaft and a front connecting bearing. The tension cylinder front connecting shaft is installed in the corresponding second tension cylinder mounting hole, and the front connecting bearing is installed on the tension cylinder front connecting shaft.