Durability testing machine for gas spring of swivel chair

Abstract

The utility model relates to a swivel chair gas spring durability testing machine which comprises a test board, a rectangular frame is installed on one side of the top of the test board, a notch is formed in one end of the rectangular frame, a first screw penetrates through the end, away from the notch, of the rectangular frame in a threaded mode, and an extrusion plate is slidably connected into the rectangular frame. The first screw rod is rotatably connected with one end of the extrusion plate, an L-shaped plate is installed on one side of the bottom of the test board, a driving motor is installed on the L-shaped plate, a driving disc is installed at the driving end of the driving motor, a connecting shaft is rotatably connected to the surface of the driving disc, a reciprocating rod is installed at the top of the connecting shaft, and a reciprocating rod is installed at the bottom of the reciprocating rod. According to the utility model, the durability of the telescopic times of the piston rod of the gas spring can be tested, and the gas spring of the rotary seat can be used after reaching the use index, so that the service life of the gas spring can be prolonged, and safety accidents in the use process can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas spring durability test field, concretely is swivel chair gas spring durability testing machine. BACKGROUND

[0002] The rotating seat mainly relies on the middle gas spring to carry out the height adjustment and rotation of the sitting surface in the use process, the gas spring can support, buffer, height adjustment and angle adjustment, it is constituted by the following parts: pressure cylinder, piston rod, piston, sealing guide sleeve, filler and joint etc., the principle of the gas spring is that inert gas or oil gas mixture is filled in the sealed pressure cylinder, the pressure in the cavity is several times or dozens of times higher than the atmospheric pressure, the pressure difference generated by the cross section area of the piston rod being smaller than the cross section area of the piston is utilized to realize the movement of the piston rod. UTILITY MODEL CONTENTS

[0003] The utility model discloses a swivel chair gas spring durability testing machine which overcomes the shortcomings of the prior art and meets the practical needs.

[0004] In order to realize the utility model's purpose, the utility model adopts the technical scheme that designs swivel chair gas spring durability testing machine, including test platform, the top one side of test platform installs rectangular frame, the one end of rectangular frame is equipped with the notch, the first screw rod is screwed through the one end of rectangular frame far from the notch, the extrusion plate is slidably connected in the rectangular frame, the first screw rod is rotatably connected with one end of extrusion plate, the bottom one side of test platform is installed L type board, the L type board is installed drive motor, the drive end of drive motor is installed drive disc, the surface of drive disc is rotatably connected with connecting shaft, the top of connecting shaft is installed reciprocating rod, one end of reciprocating rod is rotatably connected with C type block through pivot, one end of C type block is installed push rod, the limit block is installed on test platform, the push rod is slidably penetrated through limit block, one end of push rod is connected with connecting box, the one end close to rectangular frame of connecting box is open, the second screw rod is screwed through the top of connecting box, the first arc clamping plate is rotatably installed at the bottom of second screw rod.

[0005] Preferably, the surface of the driving disc is provided with an adjusting groove, an adjusting block is slidably connected in the adjusting groove, a fourth screw rod is rotatably connected between the two sides of the inner cavity of the adjusting groove, the adjusting block is threadedly sleeved on the outer side of the fourth screw rod, and the connecting shaft is rotatably connected to the adjusting block.

[0006] Preferably, the end of the extrusion plate away from the first screw rod is provided with a sliding groove, a sliding block is slidably connected in the inner cavity of the sliding groove, a second arc-shaped clamping plate is installed on the sliding block, a third screw rod is rotatably connected between the upper side and the lower side of the inner cavity of the sliding groove, and the sliding block is threadedly sleeved on the outer side of the third screw rod.

[0007] Preferably, the fifth screw rod is threadedly penetrated through the upper side of the end of the connecting box close to the push rod, and a fixed plate is fixedly connected to the fifth screw rod.

[0008] Preferably, the reciprocating rod and the push rod are on the same horizontal plane.

[0009] Preferably, the inner sides of the second arc-shaped clamping plate and the first arc-shaped clamping plate are both provided with anti-skid pads, and the anti-skid pads are made of rubber.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1. The utility model discloses a driving motor, a driving disc, a connecting shaft, a reciprocating rod, a connecting box, a rectangular frame, a first arc-shaped clamping plate and an extrusion plate are combined, the driving motor is started to drive the driving disc to rotate, the reciprocating rod is rotatably connected to the driving disc through the connecting shaft and guided to slide through the limiting block, the connecting box drives the piston rod of the gas spring to reciprocate and contract, the durability of the piston rod of the gas spring can be tested, the gas spring of the rotary seat can be used after reaching the use index, the service life of the gas spring is improved, and safety accidents in the use process are avoided.

[0012] 2. The utility model discloses the combination of the adjusting groove, the adjusting block and the fourth screw rod, the rotation of the fourth screw rod is twisted, the adjusting block can be adjusted at different positions of the driving disc, the displacement distance of the reciprocating rod pushing the connecting box can be adjusted, the piston rod extension length of the gas spring can be adjusted, and the applicability of the testing machine is further improved. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the overall overhead structure schematic diagram of the utility model;

[0014] Figure 2 It is the driving disc and reciprocating rod connecting structure schematic diagram of the utility model;

[0015] Figure 3 It is the rectangular frame structure schematic diagram of the utility model;

[0016] Figure 4 A place for the utility model of the enlarged view;

[0017] Figure 5 For the utility model of the connecting box and the fixed plate and the second screw connection side view.

[0018] In the figure: 1, test bench; 2, rectangular frame; 21, notch; 22, first screw; 23, extrusion plate; 3, connecting box; 31, fifth screw; 32, second screw; 33, fixed plate; 34, first arc-shaped clamping plate; 4, limit block; 41, push rod; 42, C-shaped block; 5, L-shaped plate; 51, drive motor; 52, drive disc; 53, reciprocating rod; 54, adjusting groove; 55, fourth screw; 56, adjusting block; 57, connecting shaft; 6, sliding groove; 61, second arc-shaped clamping plate; 62, sliding block; 63, third screw; 7, non-slip mat. DETAILED DESCRIPTION

[0019] The utility model is further illustrated in connection with the drawings and examples:

[0020] Example 1: swivel chair gas spring durability tester, see Figures 1 to 5, including test bench 1, the top side of test bench 1 is provided with a rectangular frame 2, one end of rectangular frame 2 is provided with a notch 21, the end of rectangular frame 2 away from notch 21 is threaded through a first screw rod 22, a pressing plate 23 is slidingly connected in rectangular frame 2, first screw rod 22 is rotatably connected to one end of pressing plate 23, the bottom side of test bench 1 is provided with an L-shaped plate 5, drive motor 51 is installed on L-shaped plate 5, drive end of drive motor 51 is provided with a drive disc 52, drive disc 52 is rotatably connected to a connecting shaft 57 on its surface, reciprocating rod 53 is installed on the top of connecting shaft 57, C-shaped block 42 is rotatably connected to one end of reciprocating rod 53 through a rotating shaft, push rod 41 is installed on one end of C-shaped block 42, reciprocating rod 53 and push rod 41 are on the same horizontal plane, limit block 4 is installed on test bench 1, push rod 41 slidingly penetrates limit block 4, one end of push rod 41 is connected to connecting box 3, one end of connecting box 3 close to rectangular frame 2 is provided with an opening, second screw rod 32 is threaded through the top of connecting box 3, first arc-shaped clamping plate 34 is rotatably installed at the bottom of second screw rod 32, during operation, the gas spring to be tested is placed in rectangular frame 2, then the push rod 41 of the gas spring is placed outside through notch 21, then the cylinder body of the gas spring is limited in rectangular frame 2 by rotating first screw rod 22 to push pressing plate 23, then the piston rod of the gas spring is fixed in connecting box 3 by moving first arc-shaped clamping plate 34 by rotating second screw rod 32, then drive motor 51 is started to rotate drive disc 52, so that connecting box 3 drives the piston rod of the gas spring to reciprocate and stretch and contract, so that the durability of the piston rod of the gas spring can be tested, ensuring that the gas spring of the rotary seat reaches the use index, not only improving the service life of the gas spring, but also avoiding safety accidents during use.

[0021] Specifically, referring to Figure 2 , the surface of drive disc 52 is provided with an adjusting groove 54, an adjusting block 56 is slidingly connected in adjusting groove 54, a fourth screw rod 55 is rotatably connected between the two sides of the inner cavity of adjusting groove 54, adjusting block 56 is threadedly sleeved on the outer side of fourth screw rod 55, connecting shaft 57 is rotatably connected to adjusting block 56, by rotating fourth screw rod 55, the position of adjusting block 56 on drive disc 52 can be adjusted, so that the displacement distance of reciprocating rod 53 pushing connecting box 3 can be adjusted, further improving the applicability of the testing machine.

[0022] Further, referring to Figure 4, the extrusion plate 23 is provided with a sliding groove 6 away from one end of the first screw rod 22, the inner cavity of the sliding groove 6 is slidably connected with a sliding block 62, the second arc-shaped clamping plate 61 is installed on the sliding block 62, the inner cavity of the sliding groove 6 is rotatably connected with a third screw rod 63 between the upper side and the lower side, the sliding block 62 is threadedly sleeved on the outer side of the third screw rod 63, when the gas spring is tested, the second arc-shaped clamping plate 61 is driven to move downwards by starting the third screw rod 63, so that the cylinder of the gas spring can be extruded and limited by the second arc-shaped clamping plate 61, thereby improving the stability of the gas spring test placement, and further avoiding the influence of the gas spring shaking on the accuracy of the gas spring test.

[0023] It is worth mentioning that, referring to Figure 1 and Figure 5 , the fifth screw rod 31 is threadedly penetrated through the upper side of one end of the connecting box 3 close to the push rod 41, and the fixed plate 33 is fixedly connected to the fifth screw rod 31, when the piston rod is fixed in the connecting box 3 during the gas spring test, the fixed plate 33 is driven to move by rotating the fifth screw rod 31 to extrude and open the switch plug on the gas spring, so that the durability of the automatically adjusted gas spring can be tested, and the application range of the testing machine is further improved.

[0024] It is worth mentioning that, referring to Figure 5 , the inner sides of the second arc-shaped clamping plate 61 and the first arc-shaped clamping plate 34 are both provided with anti-skid pads 7, and the anti-skid pads 7 are all made of rubber, the friction force of the first arc-shaped clamping plate 34 and the second arc-shaped clamping plate 61 with the piston rod and the cylinder of the gas spring is increased by the setting of the protective pads, and the stability of the fixation during the gas spring test is further improved.

[0025] In addition, the components designed in the utility model are all general standard components or components known by those skilled in the art, the structure and principle of which can be known by the technical personnel through a technical manual or through a conventional experimental method, and the technical personnel in the field can completely realize it without unnecessary repetition, and the content protected by the utility model does not involve improvement of the internal structure and method.

[0026] The utility model discloses the embodiment discloses the preferable embodiment, but is not limited to this, and the ordinary skilled in the art can easily understand the spirit of the utility model according to the above-mentioned embodiment, and make different induction and change, but as long as not departing from the spirit of the utility model, it is within the protection scope of the utility model.

Claims

1. Swivel chair gas spring durability testing machine comprising a test bench (1), characterized in that, The top side of the test bench (1) is provided with a rectangular frame (2), one end of the rectangular frame (2) is provided with a notch (21), a first screw rod (22) is screwed through the end of the rectangular frame (2) away from the notch (21), a pressing plate (23) is slidably connected in the rectangular frame (2), the first screw rod (22) is rotatably connected with one end of the pressing plate (23), the bottom side of the test bench (1) is provided with an L-shaped plate (5), the L-shaped plate (5) is provided with a driving motor (51), the driving end of the driving motor (51) is provided with a driving disc (52), the surface of the driving disc (52) is rotatably connected with a connecting shaft (57), the top of the connecting shaft (57) is provided with a reciprocating rod (53), one end of the reciprocating rod (53) is rotatably connected with a C-shaped block (42) through a rotating shaft, one end of the C-shaped block (42) is provided with a push rod (41), a limiting block (4) is installed on the test bench (1), the push rod (41) slidably penetrates the limiting block (4), one end of the push rod (41) is connected with a connecting box (3), the end of the connecting box (3) close to the rectangular frame (2) is provided with an opening, the top of the connecting box (3) is screwed through a second screw rod (32), the bottom of the second screw rod (32) is rotatably provided with a first arc-shaped clamping plate (34).

2. The swivel chair gas spring durability tester of claim 1, wherein, The surface of the driving disc (52) is provided with an adjusting groove (54), the adjusting groove (54) is slidably connected with an adjusting block (56), the two sides of the inner cavity of the adjusting groove (54) are rotatably connected with a fourth screw rod (55), the adjusting block (56) is threadedly sleeved on the outer side of the fourth screw rod (55), and the connecting shaft (57) is rotatably connected on the adjusting block (56).

3. The swivel chair gas spring durability tester of claim 1, wherein, The end of the pressing plate (23) away from the first screw rod (22) is provided with a sliding groove (6), the inner cavity of the sliding groove (6) is slidably connected with a sliding block (62), the sliding block (62) is provided with a second arc-shaped clamping plate (61), the inner cavity of the sliding groove (6) is rotatably connected with a third screw rod (63) between the upper and lower sides, and the sliding block (62) is threadedly sleeved on the outer side of the third screw rod (63).

4. The swivel chair gas spring durability tester of claim 1, wherein, The end of the connecting box (3) close to the push rod (41) is screwed through a fifth screw rod (31) on the upper side, and the fifth screw rod (31) is fixedly connected with a fixed plate (33).

5. The swivel chair gas spring endurance tester as set forth in claim 1, wherein, The reciprocating rod (53) and the push rod (41) are in the same horizontal plane.

6. The swivel chair gas spring endurance tester as set forth in claim 3, wherein The inner sides of the second arc-shaped clamping plate (61) and the first arc-shaped clamping plate (34) are both provided with anti-skid pads (7), and the anti-skid pads (7) are all made of rubber material.

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