A special testing machine for measuring the friction of a vehicle shock absorber

Abstract

The utility model discloses a special test machine of measuring the friction of vehicle shock absorber relates to shock absorber friction test machine field, including test table, the left side of test table top wall is provided with fixed base, the right side of test table top wall is provided with mobile seat, the opposite end of fixed base and mobile seat all is provided with connecting mechanism, the connecting mechanism includes the connecting frame, the top wall of connecting frame is provided with fixed rod, and the new scheme can cooperate with the device such as experimental table, fixed base and mobile seat through setting, can make device convenient to install the limiting of the automobile shock absorber with different aperture, avoids the offset of automobile shock absorber when testing and influence friction data, is favorable to the practicality of device improvement, through setting fixed ring, pushing and pushing spring and other device cooperation, can make device convenient to push the movement reset of limiting block, is convenient for subsequent other shock absorber and is placed, is favorable to the test efficiency improvement.

Description

Technical Field

[0001] This utility model belongs to the technical field of shock absorber friction force testing machine, specifically a special testing machine for measuring the friction force of vehicle shock absorbers. Background Technology

[0002] Vehicle shock absorbers suppress spring vibration through "damping force," which is composed of friction between the internal piston and the oil, and friction between the seals and the piston rod. Friction testing machines can be used to measure the frictional resistance of vehicle shock absorbers and evaluate their smoothness and durability. However, because different models of vehicle shock absorbers have different mounting hole sizes, loosening may occur during installation and testing, affecting the measurement data of friction force and hindering testing experiments. Therefore, we propose a special testing machine for measuring the friction force of vehicle shock absorbers. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a special testing machine for measuring the friction force of vehicle shock absorbers. It effectively solves the problem that the different sizes of the mounting holes of different models of vehicle shock absorbers cause loosening during installation and testing, affecting the measurement data of friction force and making it difficult to conduct testing experiments.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special testing machine for measuring the friction force of vehicle shock absorbers, comprising a test bench, a fixed seat provided on the left side of the top wall of the test bench, a movable seat provided on the right side of the top wall of the test bench, a connecting mechanism provided at the opposite ends of the fixed seat and the movable seat, the connecting mechanism comprising a connecting frame, a fixed rod provided on the top wall of the connecting frame, the fixed rod being hollow, a double-ended screw provided on the upper and lower side walls of the inner cavity of the fixed rod, a pushing block provided on both the upper and lower sides of the outer wall of the double-ended screw, a moving groove evenly opened on the outer wall of the fixed rod, a limiting block provided on the inner wall of each moving groove, the opposite side walls of the two sets of pushing blocks being inclined, and the upper and lower side walls of the limiting block matching the upper and lower pushing blocks.

[0005] Preferably, a fixing ring is provided on both the upper and lower sides of the outer wall of the fixing rod, a pushing spring is provided on the opposite side wall of the fixing ring on both the upper and lower sides, a pushing ring is provided on the opposite end of the pushing spring on both the upper and lower sides, and the upper and lower side walls of the limiting block away from the axis of the fixing rod are inclined.

[0006] Preferably, the opposing sidewalls of the upper and lower pushing rings are evenly provided with pushing grooves, and the pushing grooves are matched with the limiting block.

[0007] Preferably, the upper and lower side walls of the inner cavity of the fixing rod are provided with sliding rods on both the left and right sides, and the pushing block is located on the outer wall of the sliding rod.

[0008] Preferably, a sliding groove is provided on the right side of the top wall of the test bench, and the movable seat is located in the inner cavity of the sliding groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. This special testing machine for measuring the friction force of vehicle shock absorbers, through the combination of a test platform, a fixed seat and a movable seat, makes it easy to install and limit the shock absorbers of automobiles with different bore diameters, avoiding the shock absorbers from shifting during the test and affecting the friction force data, which helps to improve the practicality of the device.

[0011] 2. This special testing machine for measuring the friction force of vehicle shock absorbers, through the combination of a fixed ring, a pushing ring and a pushing spring, makes it easy for the device to push the limit block to move and reset, which facilitates the subsequent placement of other shock absorbers and improves testing efficiency.

[0012] 3. This special testing machine for measuring the friction force of vehicle shock absorbers, through the combination of a sliding rod, a pushing block, and a fixing rod, can facilitate the limiting and guiding of the movement of the pushing block, prevent the pushing block from deflecting, and facilitate the movement and clamping of the limiting block. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of the special testing machine for measuring the friction force of vehicle shock absorbers according to this utility model;

[0016] Figure 2 This is a cross-sectional view of the fixing rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the push ring structure of this utility model;

[0018] In the figure: 100, test bench; 101, fixed seat; 102, movable seat; 103, connecting mechanism; 104, connecting frame; 105, fixing rod; 106, double-ended screw; 107, pushing block; 108, limiting block; 109, fixing ring; 110, pushing spring; 111, pushing ring; 112, sliding rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Depend on Figure 1 , Figure 2 and Figure 3 This invention discloses a special testing machine for measuring the friction force of vehicle shock absorbers. A fixed base 101 is fixedly connected to the left side of the top wall of the test bench 100, facilitating the fixation of the left-side connecting mechanism 103. A movable base 102 is slidably connected to the right side of the top wall of the test bench 100, facilitating the movement of the right-side connecting mechanism 103. Connecting mechanisms 103 are fixedly connected to opposite ends of the fixed base 101 and the movable base 102. Each connecting mechanism 103 includes a connecting frame 104, which supports a fixed rod 105. The top wall of the connecting frame 104 is fixedly connected to the fixed rod 105, which supports a double-ended screw 106. The fixed rod 105 is hollow. The upper and lower sidewalls of the inner cavity of the fixed rod 105 are rotatably connected to a double-ended screw 106. The top end of the double-ended screw 106 penetrates the top wall of the fixed rod 105 and is fitted with a hexagonal screw head. The double-ended screw 106 facilitates the movement of the upper and lower pushing blocks 107 in opposite directions. The upper and lower sides of the outer wall of the double-ended screw 106 are fixedly connected to the pushing blocks 107. The pushing blocks 107 facilitate the movement of the limiting blocks 108. The outer wall of the fixed rod 105 is evenly provided with moving grooves. The inner wall of each moving groove is slidably connected to the limiting blocks 108. The limiting blocks 108 facilitate the installation and fixation of the shock absorber. The opposite sidewalls of the two sets of pushing blocks 107 are inclined. The upper and lower sidewalls of the limiting blocks 108 match the upper and lower pushing blocks 107.

[0021] In this embodiment: the movable seat 102 is connected to the test actuator, which is existing technology and will not be described in detail here. Then, the car shock absorber sleeve to be tested is placed outside the fixing rod 105. By rotating the double-ended screw 106, the two sets of pushing blocks 107 are driven to move towards each other. The two sets of pushing blocks 107 move towards each other, pushing the pushing blocks 107 to move. The moving pushing blocks 107 squeeze and clamp the inner wall of the car shock absorber sleeve connection hole. The pushing blocks 107 facilitate the limiting and fixing of connection holes with different hole diameters. Then, the test actuator is started to detect the friction force. This device can facilitate the installation and limiting of car shock absorbers with different hole diameters, and avoid the car shock absorber shifting during the test, which will affect the friction force data. This is beneficial to improving the practicality of the device.

[0022] Fixing rings 109 are provided on both the upper and lower sides of the outer wall of the fixing rod 105. Pushing springs 110 are fixedly connected to the opposite side walls of the upper and lower fixing rings 109. The pushing springs 110 facilitate the movement of the pushing rings 111. Pushing rings 111 are fixedly connected to the opposite ends of the upper and lower pushing springs 110. The pushing rings 111 facilitate the movement of the limiting block 108. The upper and lower side walls of the limiting block 108 away from the axis of the fixing rod 105 are inclined.

[0023] In this embodiment: when the double-headed screw 106 is reversed, it drives the two sets of push blocks 107 to move in the opposite direction, so that the push blocks 107 release the push on the limiting block 108. The push ring 111 is pushed to move by the elastic force of the push spring 110, and the limiting block 108 is moved and reset by the push ring 111. This facilitates the subsequent placement of other shock absorbers for testing. The device can easily push the limiting block 108 to move and reset, which is convenient for the subsequent placement of other shock absorbers and helps to improve testing efficiency.

[0024] The upper and lower pushing rings 111 have evenly spaced pushing grooves on their opposite sidewalls, and the pushing grooves match the limiting block 108.

[0025] In this embodiment: by opening the push groove, it is convenient to limit and guide the movement of the push ring 111, avoid the push ring 111 from deflecting, and facilitate the push ring 111 to move up and down to squeeze the push spring 110.

[0026] The upper and lower side walls and left and right sides of the inner cavity of the fixed rod 105 are fixedly connected to the slide rod 112. The slide rod 112 facilitates the limiting and guiding of the movement of the push block 107. The push block 107 is located on the outer wall of the slide rod 112.

[0027] In this embodiment, the sliding rod 112 is provided to facilitate the limiting and guiding of the movement of the pushing block 107, prevent the pushing block 107 from deflecting, and facilitate the movement and clamping of the limiting block 108.

[0028] A sliding groove is provided on the right side of the top wall of the test bench 100, and the movable seat 102 is located in the inner cavity of the sliding groove.

[0029] In this embodiment, the sliding groove facilitates the limiting and guiding of the movement of the movable seat 102, preventing the movable seat 102 from deflecting, and allowing the movable seat 102 to translate for friction testing, which is beneficial to the practicality of the device.

Claims

1. A special testing machine for measuring the friction force of vehicle shock absorbers, comprising a test bench (100), characterized in that: A fixed seat (101) is provided on the left side of the top wall of the test bench (100), and a movable seat (102) is provided on the right side of the top wall of the test bench (100). A connecting mechanism (103) is provided at the opposite ends of both the fixed seat (101) and the movable seat (102). The connecting mechanism (103) includes a connecting frame (104), and a fixing rod (105) is provided on the top wall of the connecting frame (104). The fixing rod (105) is hollow. Double-ended screws (106) are provided on the upper and lower side walls of the inner cavity of the rod (105). Pushing blocks (107) are provided on both the upper and lower sides of the outer wall of the double-ended screws (106). Moving grooves are evenly opened on the outer wall of the fixed rod (105). Limiting blocks (108) are provided on the inner wall of each moving groove. The opposite side walls of the two sets of pushing blocks (107) are inclined. The upper and lower side walls of the limiting blocks (108) match the upper and lower pushing blocks (107).

2. The special testing machine for measuring the friction force of vehicle shock absorbers according to claim 1, characterized in that: The upper and lower sides of the outer wall of the fixing rod (105) are provided with fixing rings (109), and the opposite side walls of the fixing rings (109) on the upper and lower sides are provided with pushing springs (110). The opposite ends of the pushing springs (110) on the upper and lower sides are provided with pushing rings (111). The upper and lower side walls of the limiting block (108) away from the axis of the fixing rod (105) are inclined.

3. A special testing machine for measuring the friction force of vehicle shock absorbers according to claim 2, characterized in that: The upper and lower sides of the push ring (111) are provided with push grooves on their opposite sidewalls, and the push grooves are matched with the limiting block (108).

4. A special testing machine for measuring the friction force of vehicle shock absorbers according to claim 1, characterized in that: The upper and lower side walls of the inner cavity of the fixing rod (105) are provided with sliding rods (112) on both the left and right sides, and the pushing block (107) is located on the outer wall of the sliding rod (112).

5. A special testing machine for measuring the friction force of vehicle shock absorbers according to claim 1, characterized in that: A sliding groove is provided on the right side of the top wall of the test bench (100), and the movable seat (102) is located in the inner cavity of the sliding groove.

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