CN216645806U

CN216645806U - Test system

Info

Publication number: CN216645806U
Application number: CN202122510865.0U
Authority: CN
Inventors: 王玉伟; 韦德
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-05-31
Anticipated expiration: 2031-10-19
Also published as: WO2023069317A1; TWM641804U

Abstract

The present application provides a testing system for testing the force limit of a gas spring including a stem portion and a sleeve portion. The test system includes a test bed, a first support, a second support, and a pressure sensor. The first supporting piece is movably arranged on the test bench and is used for being connected with the rod part of the gas spring. The second support member is movably disposed on the test table at a distance from the first support member, and is adapted to be coupled to a sleeve portion of the gas spring. The pressure sensor is arranged on the test bench, the second support piece and the pressure sensor are arranged on two opposite sides of the first support piece, and the pressure sensor is used for detecting the force applied to the gas spring. Wherein the test system is configured to: when a force is applied to the second support to move the second support toward the pressure sensor, the rod portion can be moved relative to the sleeve portion by the abutment of the rod portion of the first support or the gas spring with the pressure sensor, so that the force-receiving limit of the gas spring can be detected by the pressure sensor.

Description

Test system

Technical Field

The present application relates to a testing system, and more particularly to a testing system for testing the force limit of a gas spring.

Background

A gas spring is one type of spring member. When the gas spring is put into use, the data such as the stress limit of the gas injection spring and the like can be marked. However, the actual force limit of the purchased gas spring is not exactly the force limit of the gas spring marked when the gas spring is shipped. In some application scenarios of gas springs, it is required that the actual force limit of the gas spring is equal to the noted force limit of the gas spring. Therefore, a need exists for a test system to test whether the actual force limit of the gas spring meets the noted force limit of the gas spring.

SUMMERY OF THE UTILITY MODEL

The application provides a test system for testing the stress limit of a gas spring, the gas spring including a rod portion and a sleeve portion, the test system including a test table, a first support member, a second support member and a pressure sensor. The first supporting piece is movably arranged on the test bench and is used for being connected with the rod part of the gas spring. The second support member is movably disposed on the test stand at a distance from the first support member, and is adapted to be coupled to a sleeve portion of the gas spring. The pressure sensor is arranged on the test bench, the second support piece and the pressure sensor are positioned on two opposite sides of the first support piece, and the pressure sensor is used for detecting the force applied to the gas spring. Wherein the test system is configured to: when a force is applied to the second support to move the second support toward the pressure sensor, the rod portion can be moved relative to the sleeve portion by the abutment of the rod portion of the first support or the gas spring with the pressure sensor, so that the force-receiving limit of the gas spring can be detected by the pressure sensor.

According to the application, the test system further comprises a transmission rod, the transmission rod is rotatably arranged on the test bench, and an external thread is arranged on the transmission rod. And a transmission rod through hole is formed in the second supporting piece, and an internal thread is formed in the inner wall of the transmission rod through hole. Wherein the external thread is capable of mating with the internal thread and the drive link is capable of moving the second support toward or away from the pressure sensor when the drive link is rotated.

The test system according to the present application, further comprises a drive motor and a transmission system. The driving motor is arranged on the test bench. The transmission system is respectively engaged with an output shaft of the driving motor and the transmission rod so as to drive the transmission rod to rotate through the driving motor, thereby driving the second support to move towards or away from the pressure sensor.

According to the test system of the present application, the drive system includes a first drive wheel, a second drive wheel, and a drive belt. The first transmission wheel is sleeved on an output shaft of the driving motor and is rotatably arranged on the test bench. The second driving wheel is sleeved on the transmission rod. The transmission belt is sleeved on the first transmission wheel and the second transmission wheel. The driving motor can drive the first driving wheel to rotate, the first driving wheel rotates to drive the driving belt to rotate, and the second driving wheel is driven to rotate through the driving belt so as to drive the driving rod to rotate.

The test system further comprises a control device and a display device. The control device is in communication connection with the pressure sensor. The display device is in communication connection with the control device to display the stress limit value of the gas spring.

The test system according to the present application, further comprises a first fixture and a second fixture. The first fixing piece is arranged on the test board and used for fixing the pressure sensor. The second fixing piece is arranged on the test bench and used for supporting the transmission rod.

According to the test system of the application, the second support piece comprises a first arm, a second arm and a second support portion, the first arm and the second arm are respectively connected to two opposite ends of the second support portion and extend towards the pressure sensor, the first arm and the second arm are connected with the sleeve portion of the gas spring, and the second support portion is provided with the transmission rod through hole.

The test system according to the application, it still includes the guide, the guide sets up on the testboard, the opposite ends of guide are equipped with the guide recess, are used for receiving respectively the first arm with the second arm, thereby guide the second support piece towards or keep away from the pressure sensor motion.

According to the test system of the application, the second support member is provided with a second through hole, the sleeve portion of the gas spring is provided with a sleeve through hole, and a second connecting member can pass through the second through hole and the sleeve through hole so as to connect the second support member and the sleeve portion.

According to the test system of this application, be equipped with first through-hole on the first support piece, be equipped with pole portion through-hole on the pole portion of air spring, first connecting piece can pass first through-hole with pole portion through-hole to connect first support piece with pole portion.

The test system is simple in structure and reliable in detection. The movable first supporting piece and the movable second supporting piece are arranged, so that the stress limit of the gas spring is detected, and the structure is simple. In addition, the rotation of the transmission rod drives the second supporting piece to move, so that the stress on the transmission rod is small, and meanwhile, large force application to the gas spring is provided.

Other features, advantages, and embodiments of the application may be set forth or apparent from consideration of the following detailed description, drawings, and claims. Furthermore, it is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation without limiting the scope of the application as claimed. However, the detailed description and the specific examples merely indicate preferred embodiments of the application. Various changes and modifications within the spirit and scope of the application will become apparent to those skilled in the art from this detailed description.

Drawings

These and other features and advantages of the present application will be better understood by reading the following detailed description with reference to the drawings, in which like characters represent like parts throughout the drawings, wherein:

FIG. 1A is a perspective view of a test system using the present application;

FIG. 1B is an exploded view of the test system of the present application;

FIG. 1C is a cross-sectional view of the test system of the present application.

Detailed Description

Various embodiments of the present application will now be described with reference to the accompanying drawings, which form a part hereof. It should be understood that although directional terms, such as "up," "down," "left," "right," etc., are used herein to describe various example structural portions and elements of the application, these terms are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the embodiments disclosed herein can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting. In the following drawings, like reference numerals are used for like parts.

Fig. 1A is a perspective view of a test system 100 using the present application, fig. 1B is an exploded view of the test system 100 of the present application, and fig. 1C is a cross-sectional view of the test system 100 of the present application. Test system 100 is used to test the force limit of gas spring 101. As shown in FIGS. 1A-1C, the test system 100 includes a test bed 102, a pressure sensor 108, a control device 151, and a display device 152. The test stand 102 is used to support the gas spring 101 and apply a force to the gas spring 101. The pressure sensor 108 is used to detect the force limit of the gas spring 101. Control device 151 is communicatively coupled to pressure sensor 108 and display device 152 to display the force threshold of gas spring 101 on display device 152.

As shown in fig. 1C, the gas spring 101 includes a sleeve portion 122 and a rod portion 121. Specifically, sleeve portion 122 extends generally along its length (i.e., in a left-right direction) and defines a sleeve cavity 302. Sleeve pocket 302 is formed recessed lengthwise inwardly from the left surface of sleeve portion 122. The right end of stem 121 is received in sleeve cavity 302. Rod portion 121 is movable relative to sleeve portion 122. The right end of stem 121 is spaced from sleeve receptacle 302 to form a receiving chamber for receiving a pressurized gas (e.g., compressed air). When the gas spring 101 is subjected to a force, the sleeve portion 122 and the rod portion 121 move toward each other until the sleeve portion 122 and the rod portion 121 no longer move relative to each other, and the force applied thereto is a force limit value.

As shown in fig. 1A-1C, the test station 102 is generally plate-shaped. Which has a length direction extending in the left-right direction and a width direction extending in the front-rear direction. The test bench 102 carries a first fixture 104, a guide 103, a first support 106, and a second support 110. The first fixture 104 is substantially block-shaped and is disposed at a left end of the test stand 102. The guide member 103 is disposed on the right side of the first fixing member 104. The first support 106 is movably disposed between the first fixing member 104 and the guide member 103, and is disposed adjacent to the first fixing member 104. Specifically, the first support 106 is coupled to the shaft 121 of the gas spring 101 such that movement of the shaft 121 in a leftward or rightward direction moves the first support 106 in a leftward or rightward direction (i.e., toward or away from the pressure sensor 108). The pressure sensor 108 is fixedly disposed on the right side of the first fixture 104 and thus on the test stand 102. The pressure sensor 108 has a trigger portion (not shown) for abutting the first support 106. The second support 110 is arranged at a distance from the first support 106 for accommodating the gas spring 101. The second support member 110 is connected to the sleeve portion 122 of the gas spring 101. The second support 110 is movably disposed on the guide 103 such that the second support 110 is movably disposed on the test stand 102. The test system 100 is configured to: when a force is applied to the second support 110 to move the second support 110 toward the pressure sensor 108, the rod portion 121 can be moved relative to the sleeve portion 122 by the first support 106 abutting against the trigger portion of the pressure sensor 108, so that the force-receiving limit of the gas spring 101 can be detected by the pressure sensor 108.

As shown in fig. 1A-1C, the test bed 102 also carries a second fixture 105, a drive rod 112, a drive motor 114, and a drive train. The second fixture 105 is substantially block-shaped and is disposed at the right end of the test stand 102. More specifically, the second fixing member 105 and the first support member 106 are provided on both sides of the guide member 103. The second mount 105 serves to support the driving rod 112 and to enable the driving rod 112 to rotate with respect to the second mount 105. The transmission rod 112 is rotatably disposed on the second fixing member 105 and can drive the second supporting member 110 to move. The drive motor 114 is disposed on the test station 102 and has an output shaft 212. The drive motor 114 is communicatively coupled to the control device 151 such that the control device 151 is communicatively coupled to control the stopping and starting of the drive motor 114. In the present application, the drive motor 114 is capable of rotating in a first direction and a second direction. The output shaft 212 is engaged with the transmission system to drive the transmission rod 112 to rotate in the first direction and the second direction through the transmission system to drive the second support 110 toward or away from the pressure sensor 108.

The specific structure of the components in the test system 100 is described below with reference to FIG. 1B:

as shown in fig. 1B, the first support 106 is provided with a first support through hole 251 that penetrates the first support 106 in the front-back direction. The rod portion 121 of the gas spring 101 is provided with a rod portion through hole 234 penetrating the rod portion 121 in the front-rear direction, and the first connecting member 241 can pass through the first support member through hole 251 and the rod portion through hole 234, thereby connecting the first support member 106 and the rod portion 121. The second support member 110 is substantially U-shaped. Specifically, the second support member 110 includes a first arm 201, a second arm 202, and a second support portion 203, and the first arm 201 and the second arm 202 are respectively connected to opposite ends of the second support portion 203 and are formed to extend toward the pressure sensor 108. The left ends of the first arm 201 and the second arm 202 are provided with second support through holes 205 that penetrate the first arm 201 and the second arm 202 in the front-rear direction. The sleeve portion 122 of the gas spring 101 is provided with a sleeve through hole 232 that penetrates the sleeve portion 122 in the front-rear direction. The second connector 242 can pass through the second support member through hole 205 and the sleeve through hole 232, thereby connecting the second support member 110 and the sleeve portion 122. As one example, the first connector 241 and the second connector 242 are shafts. It should be noted that, although the first connector 241 and the second connector 242 are shaft rods, so that the first support 106 and the rod portion 121 can rotate relatively, and the second support 110 and the sleeve portion 122 can rotate relatively, since the first support 106, the second support 110 and the gas spring 101 are arranged along the same straight line, the first support 106 and the rod portion 121 cannot rotate relatively, and the second support 110 and the sleeve portion 122 cannot rotate relatively. In addition, a transmission rod through hole 204 is formed in the second support portion 203 to penetrate the second support portion 203 in the left-right direction, and is used for receiving the transmission rod 112. The inner wall of the drive rod through bore 204 is internally threaded to mate with the external threads on the drive rod 112.

Further, as shown in fig. 1B, opposite sides (i.e., front and rear sides) of the guide 103 are provided with guide recesses 221 for receiving the first and

second arms

201 and 202, respectively, to guide the second support 110 toward or away from the pressure sensor 108.

As shown in fig. 1B, the second fixing member 105 is provided with a second fixing member through hole 261 penetrating the second fixing member 105 in the left-right direction for receiving the transmission rod 112. The outer surface of the left end of the transmission rod 112 is externally threaded to mate with the internal threads on the second support 110 such that the transmission rod 112 is able to move the second support 110 toward or away from the pressure sensor 108 as the transmission rod 112 is rotated. The right end of the driving lever 112 passes through the second fixture through-hole 261 of the second fixture 105 so that the right end of the driving lever 112 is positioned at the right side of the second fixture 105 for engagement with the driving system.

As shown in fig. 1A-1B, the transmission system is coupled to the output shaft 212 of the driving motor 114 and the transmission rod 112, respectively, to drive the transmission rod 112 to rotate by the driving motor 114, thereby driving the second support 110 to move toward or away from the pressure sensor 108. As an example, the transmission system of the present application includes a first transmission wheel 116, a second transmission wheel 117, and a transmission belt 118. The first driving wheel 116 is sleeved on the output shaft 212 of the driving motor 114 and is rotatably disposed on the testing table 102. The second transmission wheel 117 is sleeved on the right end of the transmission rod 112. The transmission belt 118 is sleeved on the first transmission wheel 116 and the second transmission wheel 117. Specifically, the motor mount 271 is disposed on the test stand 102, and is disposed substantially rearward of the second mount 105. The motor fixing member 271 is provided with a motor through hole 272 penetrating the motor fixing member 271 in the left-right direction. The output shaft 212 of the driving motor 114 can pass through the motor through hole 272 from the left side and extend to the right side of the motor fixing member 271. The centers of the first transmission wheel 116 and the second transmission wheel 117 are respectively provided with a hollow part penetrating through the centers in the left-right direction. The first transmission wheel 116 is sleeved on the output shaft 212, so that the output shaft 212 can drive the first transmission wheel 116 to rotate. The second transmission wheel 117 is sleeved at the right end of the transmission rod 112, so that the second transmission wheel 117 can drive the transmission rod 112 to rotate. The transmission belt 118 is sleeved on the first transmission wheel 116 and the second transmission wheel 117 and is kept in a tensioned state, so that the first transmission wheel 116 can drive the second transmission wheel 117 to rotate.

In the present application, when an operator needs to test the force limit of the gas spring 101, the operator connects the stem portion 121 of the gas spring 101 with the first support 106 and connects the sleeve portion 122 with the second support 110. The operator then activates the drive motor 114. The driving motor 114 drives the first driving wheel 116 to rotate, the first driving wheel 116 drives the driving belt 118 to rotate, and the driving belt 118 drives the second driving wheel 117 to rotate. The second transmission wheel 117 rotates the transmission rod 112. The external threads on the transmission rod 112 engage the internal threads of the second support 110 to move the second support 110 toward the pressure sensor 108. The leftward movement of the second support 110 moves the gas spring 101 and the first support 106 leftward together, on the one hand, and causes the first support 106 to abut against the trigger portion of the pressure sensor 108, and on the other hand, causes the sleeve portion 122 and the rod portion 121 to move toward each other, thereby compressing the compressed gas in the accommodating chamber. The pressure sensor 108 transmits the force value received by the pressure sensor to the control device 151 as a signal, and the control device 151 transmits the signal to the display device 152, thereby displaying the force value received by the pressure sensor 108 to the operator in real time. As the driving motor 114 rotates, the sleeve portion 122 and the rod portion 121 continue to move toward each other, and at the same time, the force applied to the trigger portion of the pressure sensor 108 is increased, and until a certain time point begins, the force applied to the pressure sensor 108 becomes a fixed value. This time, it is indicated that the gas spring 101 has now reached its maximum force (i.e., force limit) that it can withstand. The fixed value observed by the operator via the display device 152 is the force limit value for the gas spring 101.

It will be appreciated by those skilled in the art that although the transmission system includes the first transmission wheel 116, the second transmission wheel 117 and the transmission belt 118, in other embodiments, other means such as worm gears and the like can be used to drive the transmission rod 112 to rotate, thereby driving the second support member 110 to move.

It will also be appreciated by those skilled in the art that while the first support 106 in the present application carries the stem portion 121 of the gas spring 101 and abuts the trigger portion of the pressure sensor 108 to apply force to the pressure sensor 108, in other embodiments the stem portion 121 of the gas spring 101 may abut the trigger portion of the pressure sensor 108 to apply force to the pressure sensor 108.

The test system 100 of the present application has the advantages of simple structure and reliable detection mode. Specifically, the movable first support 106 and the movable second support 110 are arranged, so that the force limit of the gas spring 101 can be detected, and the structure is simple. In addition, the rotation of the transmission rod 112 drives the second support member 110 to move, so that a large force can be applied to the gas spring 101 while the force applied to the transmission rod 112 is small. The detection mode is reliable. As an example, the urging force of the transmission rod 112 against the gas spring 101 may be up to 500N · m.

While the present disclosure has been described in conjunction with examples of the embodiments outlined above, various alternatives, modifications, variations, improvements, and/or substantial equivalents, whether known or that are or may be presently foreseen, may become apparent to those of ordinary skill in the art. Accordingly, the examples of embodiments of the present disclosure set forth above are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit or scope of the disclosure. Accordingly, the present disclosure is intended to embrace all known or earlier-developed alternatives, modifications, variations, improvements, and/or substantial equivalents. The technical effects and technical problems in the present specification are exemplary and not restrictive. It should be noted that the embodiments described in this specification may have other technical effects and may solve other technical problems.

Claims

1. A test system (100) for testing the force limits of a gas spring (101), the gas spring (101) including a stem portion (121) and a sleeve portion (122), the test system (100) comprising:

a test station (102);

a first support (106), wherein the first support (106) is movably arranged on the test bench (102) and is used for being connected with a rod part (121) of the gas spring (101);

-a second support (110), which second support (110) is movably arranged at the test bench (102) and at a distance from the first support (106), which second support (110) is intended to be connected to a sleeve portion (122) of the gas spring (101); and

-a pressure sensor (108), said pressure sensor (108) being arranged on said test bench (102) and said second support (110) and said pressure sensor (108) being located on opposite sides of said first support (106), said pressure sensor (108) being adapted to detect a force to which said gas spring (101) is subjected;

wherein the test system (100) is configured to: when a force is applied to the second support (110) to move the second support (110) toward the pressure sensor (108), the rod portion (121) can be moved relative to the sleeve portion (122) by the first support (106) or the rod portion (121) of the gas spring (101) abutting against the pressure sensor (108), so that the force-receiving limit of the gas spring (101) can be detected by the pressure sensor (108).

2. The test system (100) of claim 1, further comprising:

the transmission rod (112) is rotatably arranged on the test bench (102), and an external thread is arranged on the transmission rod (112);

a transmission rod through hole (204) is formed in the second supporting piece (110), and internal threads are formed in the inner wall of the transmission rod through hole (204);

wherein the external thread is capable of mating with the internal thread and the drive rod (112) is capable of moving the second support (110) towards or away from the pressure sensor (108) when the drive rod (112) is rotated.

3. The test system (100) of claim 2, further comprising:

a drive motor (114), the drive motor (114) being disposed on the test stand (102);

a transmission system engaged with the output shaft (212) of the driving motor (114) and the transmission rod (112), respectively, to drive the transmission rod (112) to rotate by the driving motor (114) so as to drive the second support (110) to move towards or away from the pressure sensor (108).

4. The test system (100) of claim 3, wherein the drive train comprises:

the first transmission wheel (116), the first transmission wheel (116) is sleeved on the output shaft (212) of the driving motor (114) and is rotatably arranged on the test bench (102);

the second driving wheel (117) is sleeved on the driving rod (112); and

the transmission belt (118), the transmission belt (118) is sleeved on the first transmission wheel (116) and the second transmission wheel (117);

the driving motor (114) can drive the first driving wheel (116) to rotate, the first driving wheel (116) drives the driving belt (118) to rotate, and the second driving wheel (117) is driven to rotate through the driving belt (118), so that the driving rod (112) is driven to rotate.

5. The test system (100) of claim 1, further comprising:

a control device (151), wherein the control device (151) is in communication connection with the pressure sensor (108); and

the display device (152) is in communication connection with the control device (151) to display the force limit value of the gas spring (101).

6. The test system (100) of claim 2, further comprising:

a first fixture (104), the first fixture (104) being disposed on the test bed (102) for securing the pressure sensor (108); and

a second fixture (105), the second fixture (105) being arranged on the test bench (102) for supporting the transmission bar (112).

7. The test system (100) of claim 2, wherein:

the second support (110) comprises a first arm (201), a second arm (202) and a second support part (203), the first arm (201) and the second arm (202) are respectively connected to two opposite ends of the second support part (203) and are formed by extending towards the pressure sensor (108), the first arm (201) and the second arm (202) are connected with a sleeve part (122) of the gas spring (101), and the second support part (203) is provided with a transmission rod through hole (204).

8. The test system (100) of claim 7, further comprising:

a guide (103), the guide (103) being arranged on the test bench (102), opposite ends of the guide (103) being provided with guide recesses (221) for receiving the first arm (201) and the second arm (202), respectively, for guiding the second support (110) towards or away from the pressure sensor (108).

9. The test system (100) of claim 1, wherein:

a second support member through hole (205) is provided on the second support member (110), a sleeve through hole (232) is provided on the sleeve portion (122) of the gas spring (101), and a second connecting member (242) is capable of passing through the second support member through hole (205) and the sleeve through hole (232) to connect the second support member (110) and the sleeve portion (122).

10. The test system (100) of claim 1, wherein:

the first support piece (106) is provided with a first support piece through hole (251), the rod part (121) of the gas spring (101) is provided with a rod part through hole (234), and a first connecting piece (241) can penetrate through the first support piece through hole (251) and the rod part through hole (234) so as to connect the first support piece (106) and the rod part (121).