Safety belt friction tester

Abstract

The utility model relates to the technical field of friction testing, in particular to a safety belt friction tester which comprises a rack, a safety belt winding device is arranged on the rack, a safety belt and a rocking seat are arranged on the safety belt winding device, the rocking seat is installed on a working table top arranged on the rack, and a human body model is arranged on the rocking seat. The human body model shakes along with the rocking seat, the human body model makes contact with a safety belt arranged on the safety belt winding device, the safety belt traction mechanism is installed on the working table top, and the safety belt is located between the safety belt traction mechanism and the safety belt winding device. According to the safety belt friction tester, a safety belt pulling friction test is added on the basis of keeping an original human body model shaking friction test, so that the requirement of performing a safety belt active pulling test between a safety belt and tested clothes is met, and the friction condition of the safety belt and the tested clothes can be relatively comprehensively reflected; and comprehensive testing is provided for the safety belt friction tester.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of friction testing, in particular to a seat belt friction tester. BACKGROUND

[0002] The seat belt friction tester is a device specially used for testing the friction characteristics between the seat belt and the textile, simulating the real friction between the seat belt and the measured clothes under the daily driving condition, and testing the pilling change and wear resistance generated by the mutual friction between the seat belt and the measured clothes through the seat belt friction tester;

[0003] The existing seat belt friction tester can only complete the friction between the seat belt and the measured clothes caused by the collision of the seat belt with the body model driven by the seat swing, but in daily driving, the seat belt is also stretched along the length direction when being bound to the body model, and friction will also be generated between the seat belt and the clothes. The existing seat belt friction tester cannot comprehensively simulate the friction between the seat belt and the clothes.

[0004] Therefore, how to meet the comprehensive testing requirements of the seat belt and the measured clothes in a seat belt friction tester is a problem to be solved at present.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the present disclosure is to provide a seat belt friction tester, which at least partially overcomes the problem of insufficient comprehensive testing of the seat belt friction tester caused by the related art.

[0007] Other characteristics and advantages of the present disclosure will become apparent from the following detailed description, or will be learned by practice of the present disclosure.

[0008] According to one aspect of the present utility model, a seat belt friction tester is provided, comprising:

[0009] A rack is provided with a seat belt winding device, and the seat belt winding device is provided with a seat belt.

[0010] A swing seat is installed on a workbench provided on the rack, and a mannequin is provided on the swing seat, and the mannequin swings with the swing seat.

[0011] The mannequin is in contact with the seat belt provided on the seat belt winding device.

[0012] A safety belt pulling mechanism is mounted on the worktop.

[0013] A safety belt is between the safety belt pulling mechanism and a safety belt winding device, and the safety belt pulling mechanism pulls the safety belt.

[0014] According to an embodiment of the utility model, the safety belt pulling mechanism is provided with a sliding pulling structure, the sliding pulling structure is fixed through the support column mounted on the worktop, a guide seat is arranged below the sliding pulling structure, a pulling rope is arranged between the guide seat and the sliding pulling structure, and the pulling rope can pull the sliding pulling structure to move through the guide seat.

[0015] According to an embodiment of the utility model, a movable pressing structure is arranged at the first end of the pulling plate of the sliding pulling structure, the pressing structure can clamp and fix the safety belt, a slidable mounting plate is arranged on the pulling plate, the mounting plate is mounted on the support column, a first pulley is arranged on the mounting plate, a second pulley is arranged at the inner side of the tail end of the pulling plate, the first pulley and the second pulley are connected with the pulling rope, the first pulley and the second pulley can rotate independently, a connecting block is arranged at the tail end of the pulling plate, and the connecting block is used for being connected with the pulling rope.

[0016] According to an embodiment of the utility model, the pressing structure comprises a fixed plate, the fixed plate is mounted on the pulling plate, a push rod is arranged in the fixed plate, the push rod and the fixed plate are mounted together through thread cooperation, support rods are arranged at the two sides of the push rod, the support rods are movably mounted in the fixed plate, a pressing plate is arranged at the lower end of the support rod, the push rod is arranged above the pressing plate, an elastic member is arranged above the support rod on the fixed plate, a plurality of clamping rollers are arranged in the pulling plate below the pressing plate, and a clamping space is formed between the clamping rollers and the pressing plate.

[0017] According to an embodiment of the utility model, a plurality of grooves are arranged below the pressing plate, and the grooves are matched with the shape of the clamping rollers.

[0018] According to an embodiment of the utility model, a pulling motor for pulling the pulling rope is further arranged below the guide seat, and the pulling motor is mounted in the rack.

[0019] According to an embodiment of the utility model, the pulling rope is provided with a first pulling rope and a second pulling rope, and the first pulling rope and the second pulling rope cooperate to drive the sliding pulling structure to move back and forth through the pulling motor.

[0020] According to the embodiment of the utility model, the first traction rope one end with the second pulley that the pull plate is equipped installs together, the first traction rope is equipped on the first pulley, the first traction rope is installed together through the guide seat and the pull motor, the sliding pull structure moves through the first traction rope and the pull motor cooperation.

[0021] According to the embodiment of the utility model, the second traction rope with the connecting block that the pull plate tail end is equipped installs together, the second traction rope is installed together through the guide seat and the pull motor, the sliding pull structure moves through the second traction rope and the pull motor cooperation.

[0022] According to the embodiment of the utility model, the rack still includes control console, the control console is equipped on the worktop,

[0023] The control console and the rocking seat, safety belt pull mechanism electric connection together, the control console can control rocking seat and safety belt pull mechanism work.

[0024] From the above technical scheme can know, the utility model provides a safety belt friction tester, can according to the test demand and select human body model rocking friction test mode and safety belt pull friction test mode;

[0025] In human body model rocking friction test mode, through the rocking human body model simulates the situation of automobile travel, when the human body shakes, the friction condition of safety belt and the measured clothes;

[0026] In safety belt pull friction test mode, through the safety belt pull mechanism simulates the situation of automobile travel, when the safety belt pulls, the friction condition with the measured clothes;

[0027] The safety belt friction tester of the application increases safety belt pull friction test on the basis of keeping the original human body model rocking friction test, meets the demand of safety belt active pull test between safety belt and the measured clothes, can more comprehensive reflect the friction condition of safety belt and the measured clothes, provides comprehensive test for safety belt friction tester.

[0028] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings herein are incorporated into the specification and form part of the specification, show the embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0030] Figure 1 is a structural schematic diagram of a seat belt friction tester according to an exemplary embodiment.

[0031] Figure 2 is a front view schematic diagram of a seat belt friction tester according to an exemplary embodiment.

[0032] Figure 3 is an internal structural schematic diagram of a rack of a seat belt friction tester according to an exemplary embodiment.

[0033] Figure 4 is a three-dimensional structural schematic diagram of a seat belt pulling mechanism of a seat belt friction tester according to an exemplary embodiment.

[0034] Figure 5 is a three-dimensional structural schematic diagram of a seat belt pulling mechanism of a seat belt friction tester according to an exemplary embodiment.

[0035] Figure 6 is a three-dimensional structural schematic diagram of a seat belt pulling mechanism of a seat belt friction tester according to an exemplary embodiment.

[0036] 1 - rack, 11 - workbench, 2 - seat belt winding device, 3 - control console; 4 - rocking chair, 5 - mannequin; 6 - seat belt pulling mechanism;

[0037] 61 - sliding pulling structure, 62 - support column, 63 - guide seat, 64 - pulling rope, 65 - pulling motor;

[0038] 611 - pulling plate, 612 - pressing structure, 613 - mounting plate, 614 - first pulley, 615 - second pulley, 616 - connecting block;

[0039] 6121 - fixed plate, 6122 - push rod, 6123 - support rod, 6124 - pressing plate, 6125 - elastic member, 6126 - clamping roller, 6127 - groove;

[0040] 641 - first traction rope, 642 - second traction rope. DETAILED DESCRIPTION

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0042] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0043] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0044] Reference Figures 1-6 As shown, one embodiment of this disclosure provides a seat belt friction tester, comprising a frame 1, a seat belt retraction device 2 mounted on the frame 1, and a seat belt mounted on the seat belt retraction device 2, as shown in the attached figure. Figure 1 As shown, the seat belt can be fixed by the fixing buckle of the seat belt retraction device 2, and it can be used with the human body model 5 to simulate the daily working state of the seat belt. The installation height of the seat belt retraction device 2 can be adjusted according to the usage requirements.

[0045] The rocking seat 4 is installed on the worktable 11 provided on the frame 1. The rocking seat 4 is equipped with a human body model 5. The human body model 5 moves with the rocking seat 4 to simulate the swaying of the human body during daily driving.

[0046] The mannequin 5 is in contact with the seat belt installed in the seat belt retraction device 2;

[0047] Safety belt pulling mechanism 6 is installed on the workbench 11, as shown in the attached figure. Figure 2 As shown, the seat belt pulling mechanism 6 is installed on one side of the rocking seat 4, close to the fixing buckle, to fix the seat belt and simulate the normal fixed state of the seat belt.

[0048] The safety belt is between the safety belt pulling mechanism 6 and the safety belt winding device 2, and the safety belt pulling mechanism 6 pulls the safety belt.

[0049] The safety belt pulling mechanism 6 pulls and fixes the lower end of the safety belt.

[0050] The safety belt cooperates with the mannequin 5 on the rocking seat 4 to simulate the rocking state of the safety belt fixing the human body in the driving process, and the safety belt is in a passive moving state, simulating the real situation of the human body swaying forward and backward in the driving process of the automobile, detecting the friction state of the safety belt and the clothes on the mannequin 5, and being in a mannequin rocking friction test mode.

[0051] The safety belt cooperates with the mannequin 5 and the safety belt pulling mechanism 6 to simulate the pulling state of the safety belt in the driving process, and the safety belt is in a pulling moving state, simulating the friction state of the safety belt and the clothes on the mannequin 5 in the contraction process of the safety belt winding device 2, and being in a safety belt pulling friction test mode.

[0052] In one embodiment, as shown in the accompanying drawings, Figure 3 The safety belt pulling mechanism 6 is provided with a sliding pulling structure 61, which is fixed by a support column 62 installed on the workbench top 11, and can slide by itself. The sliding pulling structure 61 is inclined and placed on the upper part of the support column 62. A guide seat 63 is arranged below the sliding pulling structure 61 and on the workbench top 11. A pulling rope 64 is arranged between the guide seat 63 and the sliding pulling structure 61. The pulling rope 64 can pull the sliding pulling structure 61 to move through the guide seat 63. One end of the safety belt is fixed by the sliding pulling structure 61. During the reciprocating movement of the sliding pulling structure 61, the safety belt is in a reciprocating movement state in the length direction, so that the safety belt and the measured clothes on the mannequin 5 are rubbed with each other, and then the friction caused by the dynamic movement of the safety belt on the clothes is detected.

[0053] In one embodiment, as shown in the accompanying drawings, Figure 4As shown, the first end of the pulling plate 611 of the sliding pulling structure 61 is provided with a movable compression structure 612, which can clamp and fix the safety belt. The pulling plate 611 is slidably installed with a mounting plate 613, and the pulling plate 611 is slidably installed with the mounting plate 613. The mounting plate 613 is installed on the supporting column 62. The pulling plate 611 is provided with a sliding rail, and the pulling plate 611 is installed with the mounting plate 613 through the sliding block provided on the sliding rail, so that the sliding pulling structure 61 can slide. The mounting plate 613 is provided with a first pulley 614, and the tail end of the pulling plate 611 is provided with a second pulley 615. The first pulley 614 and the second pulley 615 are connected with the pulling rope 64. The first pulley 614 and the second pulley 615 can rotate independently. The tail end of the pulling plate 611 is provided with a connecting block 616, which is used to connect with the pulling rope 64.

[0054] In one embodiment, as shown in the accompanying drawings Figure 5 As shown, the compression structure 612 includes a fixed plate 6121 installed on the pulling plate 611. The fixed plate 6121 is provided with a push rod 6122 which is threadedly installed with the fixed plate 6121. The push rod 6122 is provided with support rods 6123 on both sides, which are movably installed in the fixed plate 6121. The support rods 6123 move vertically in the fixed plate 6121. The lower end of the support rod 6123 is provided with a pressing plate 6124 which is installed with the support rod 6123. The pressing plate 6124 moves with the support rod 6123. The push rod 6122 is above the pressing plate 6124. When the screw rod 6122 rotates downward, it pushes the pressing plate 6124 to move downward. The support rod 6123 is provided with an elastic element 6125 above the fixed plate 6121. The elastic element 6125 can be a spring, but is not limited to this. When the push rod 6122 pushes the pressing plate 6124 to move downward, the pressing plate 6124 drives the support rod to move downward, so as to extrude the elastic element 6125 on the support rod 6122 and make it deform;

[0055] When the push rod 6122 moves upward, the pressing plate 6124 loses the downward pushing force, and the elastic element 6125 pushes the support rod 6123 to move upward through the elastic force, so that the support rod 6123 drives the pressing plate 6124 to move upward. Under the action of the elastic force of the elastic element 6125, the upper surface of the pressing plate 6124 is always attached to the lower end of the push rod 6122, so that the pressing plate 6124 moves away from the clamping roller 6126 with the push rod 6122;

[0056] As shown in the accompanying drawings Figure 6As shown, the pressing plate 6124 is provided below with a plurality of clamping rollers 6126 installed in the pulling plate 611, which are installed in the pulling plate 611 for cooperation with the pressing plate 6124 to clamp and fix the safety belt, and form a clamping space between the clamping rollers 6126 and the pressing plate 6124, so as to clamp and fix the safety belt in the clamping space through cooperation of the clamping rollers 6126 and the pressing plate 6124.

[0057] In one embodiment, as shown in the accompanying drawings, the pulling plate 611 is provided with a plurality of clamping rollers 6126, which are installed in the pulling plate 611 for cooperation with the pressing plate 6124 to clamp and fix the safety belt. Figure 6 As shown, the pressing plate 6124 is provided below with a plurality of grooves 6127 matched with the shape of the clamping rollers 6126, which can fix the safety belt through cooperation of the grooves 6127 and the clamping rollers 6126, the safety belt is inserted between the pressing plate 6124 and the clamping rollers 6126, and the pressing plate 6124 is pressed and fixed with the safety belt through cooperation of the grooves 6127 and the clamping rollers 6126, and the multiple grooves 6127 increase the stability of clamping the safety belt.

[0058] In one embodiment, the guide seat 63 is further provided below with a pulling motor 65 for pulling the pulling rope 64, which is installed inside the rack 1, the guide seat 63 is provided with a threading hole for the pulling rope 64 to pass through and move, the pulling rope 64 is in sliding contact with the rollers provided on the guide seat 63, the guide seat 63 supports and guides the pulling rope 64, and the pulling rope 64 enters the inside of the rack 1 through the threading hole to cooperate with the pulling motor 65.

[0059] In one embodiment, the pulling rope 64 is provided with a first pulling rope 641 and a second pulling rope 642, both of which are connected with the pulling motor 65, the pulling motor 65 can pull the first pulling rope 641 and the second pulling rope 642 connected with the sliding pulling structure 61, and can periodically reciprocate according to the use requirement, so that the first pulling rope 641 and the second pulling rope 642 synchronously perform the pulling action, for example, when the first pulling rope 641 performs the pulling action, the second pulling rope 642 moves following, or when the second pulling rope 642 performs the pulling action, the first pulling rope 641 moves following.

[0060] The first pulling rope 641 and the second pulling rope 642 of the pulling rope 64 cooperate to drive the sliding pulling structure 61 to reciprocate through the pulling motor 65, so that the sliding pulling structure 61 stably reciprocates through the slide rail and the slide block.

[0061] In one embodiment, the first traction rope 641 is installed at one end of the second pulley 615 provided on the pulling plate 611, the first traction rope 641 is wound on the first pulley 614, and the first traction rope 641 is installed together with the pulling motor 65 through the guide seat 63, thereby forming a pulley set. The sliding pulling structure 61 moves in cooperation with the pulling motor 65 through the first traction rope 641, and the pulley set facilitates the pulling rope to perform the pulling action.

[0062] In one embodiment, the second traction rope 642 is installed together with the connecting block 616 provided at the tail end of the pulling plate 611, the second traction rope 642 is installed together with the pulling motor 65 through the guide seat 63, thereby forming a pulley set. The sliding pulling structure 61 moves in cooperation with the pulling motor 65 through the second traction rope 642, and the pulley set facilitates the pulling rope to perform the pulling action.

[0063] In one embodiment, the rocking seat 4 further comprises a rocking motor, the rocking motor drives the rocking seat 4 to perform periodic rocking, so that the mannequin 5 installed above the rocking seat 4 performs periodic rocking according to the test requirements, to meet the safety belt friction test requirements.

[0064] In one embodiment, the rack 1 further comprises a console 3, the console 3 is provided on the workbench 11, and a color screen is further provided below the rack 1, the color screen is used for feeding back test parameters, the console 3 is electrically connected together with the color screen, the rocking motor and the pulling motor 64, the console 3 can control the rocking motor to perform periodic friction test work on the mannequin 5 and the safety belt, the console 3 uses a single-chip microcomputer control system to control the rocking seat 4 to simulate the number of body shakes and the frequency of body shakes in normal driving of a car;

[0065] The console 3 can control the rocking motor and the pulling motor 65 to perform periodic operation;

[0066] And the console 3 can also control the pulling motor 65 to cooperate with the sliding pulling structure 61 to perform periodic friction test work on the mannequin 5 and the safety belt, the console 3 uses a single-chip microcomputer control system to control the number of reciprocating movements and the frequency of the safety belt on the safety belt pulling mechanism 6, to simulate the pulling of the safety belt.

[0067] In the safety belt friction tester, the mannequin 5 wears the clothes to be tested, and cooperates with the safety belt to perform the friction test;

[0068] In one embodiment, when the human body model shaking friction test mode is adopted, the safety belt provided in the safety belt winding device 2 fixes the human body model 5 on the shaking seat 4, simulates the friction between the automobile seat safety belt and the human body during the driving of the automobile, and the operator controls the shaking motor through the console 3 to drive the human body model 5 on the shaking seat 4 to periodically shake forward and backward, so that the safety belt rubs against the measured clothes on the human body model 5, and the safety belt slides forward and backward on the human body model, which is used to test the friction of the safety belt on the measured clothes under the shaking of the human body;

[0069] In one embodiment, when the safety belt pulling friction test mode is adopted, the safety belt provided in the safety belt winding device 2 fixes the human body model 5 on the shaking seat 4, simulates the fixation of the human body by the automobile seat safety belt, and the operator controls the pulling motor 65 through the console 3 to drive the sliding pulling structure 61 to reciprocate by cooperation of the first pulling rope 641 and the second pulling rope 642, so that the safety belt clamped in the safety belt pulling mechanism 6 rubs against the measured clothes on the human body model 5, and the safety belt moves along the length direction on the human body model 5, which is used to test the friction of the safety belt on the measured clothes during the contraction of the safety belt winding device 2;

[0070] The human body model shaking friction test mode and the safety belt pulling friction test mode can be started alone or simultaneously according to the test requirements to meet different test requirements;

[0071] When the safety belt pulling mechanism is needed to be used, the safety belt in the safety belt winding device is sent into the pressing structure, and then the pushing rod 6122 on the fixed plate 6121 is rotated to push the pressing plate 6124 to move towards the clamping roller 6126, so that the safety belt sent into the clamping space is clamped and fixed by cooperation of the pressing plate 6124 and the clamping roller 6126.

[0072] When the safety belt needs to be taken out, the pushing rod 6122 is rotated in the opposite direction to release the clamping action of the pressing plate 6124 and the clamping roller 6126 on the safety belt, and as the pushing rod 6122 continues to rotate in the opposite direction, the pressing plate 6124 moves away from the clamping roller 6126 under the driving of the elastic member 6125 on the supporting rod 6123 to leave the clamping space.

[0073] The pulling rope 64 is single or multiple between the pulling motor 65 and the sliding pulling structure 61, and the guide seat 63 is installed and arranged in matching with the pulling rope 64. The guide seat 63 mainly plays a guiding and supporting role and contacts with both ends of the pulling rope 64, so that the pulling work is realized by cooperation of the pulling rope 64 and the guide seat 63.

[0074] The pulling rope 64 can be arranged between the sliding pulling structure 61 and the pulling motor 65 according to the use requirement, and the pulling rope 64 is single, and the two ends of the rope can be independently matched with the sliding pulling structure 61 and matched with the pulling motor 65 to realize the reciprocating movement of the sliding pulling structure 61.

[0075] Or;

[0076] The pulling rope 64 can be arranged between the sliding pulling structure 61 and the pulling motor 65 according to the use requirement, and the pulling rope 64 is two, and the ropes are independently arranged between the pulling motor 65 and the sliding pulling structure 61, and matched with the pulling motor 65 to realize the reciprocating movement of the sliding pulling structure 61.

[0077] In summary, the above-mentioned safety belt friction tester can select different test modes to simulate the friction of the safety belt on the clothes under the actual driving condition;

[0078] By selecting the safety belt pulling mechanism for friction test, the safety belt pulling mechanism simulates the friction of the safety belt on the measured clothes due to pulling in the daily driving process of the automobile, further increases the test types of the safety belt friction tester, and enriches the test data between the safety belt and the measured clothes, which can better reflect the test data of various types of safety belts and various types of measured clothes under different / same test environments, so as to enable the test personnel to observe the friction between the safety belt and the measured clothes, and further improve the product quality of the safety belt or the measured clothes;

[0079] Different from the traditional single relative motion safety belt friction tester, the safety belt friction tester of the application can test the friction of the safety belt and the measured clothes under multiple relative motions, and on the basis of the original human body model shaking friction test, the safety belt pulling friction test is increased to meet the demand of pulling test between the safety belt and the measured clothes;

[0080] Different friction test modes can be selected according to the test requirement, which can significantly improve the test effect of the safety belt and the measured clothes in the safety belt friction tester, and without the need of using additional equipment for test, the safety belt and the measured clothes do not need to be moved, thereby improving the stability of the test data of the safety belt and the measured clothes.

[0081] It should be understood that the above-described examples can be utilized in multiple directions, such as inclined, inverted, horizontal, vertical, etc., and in multiple configurations, without departing from the principles of the application. The embodiments shown in the drawings are shown and described as examples of effective application of the principles of the application, and the application is not limited to any specific details of these embodiments.

[0082] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A seatbelt friction tester, characterized in that, include: A frame (1) is provided with a safety belt retraction device (2), and the safety belt retraction device (2) is provided with a safety belt; A rocking seat (4) is installed on the workbench (11) of the frame (1). A human body model (5) is provided on the rocking seat (4). The human body model (5) rocks along with the rocking seat (4). The human body model (5) is in contact with the safety belt provided by the safety belt retraction device (2); A safety belt pulling mechanism (6) is installed on the workbench (11); The seat belt is located between the seat belt pulling mechanism (6) and the seat belt retracting device (2), and the seat belt pulling mechanism (6) pulls the seat belt.

2. The seat belt friction tester according to claim 1, characterized in that: The safety belt pulling mechanism (6) is provided with a sliding pulling structure (61). The sliding pulling structure (61) is fixed by a support column (62) installed on the workbench (11). A guide seat (63) is provided below the sliding pulling structure (61). A pulling rope (64) is provided between the guide seat (63) and the sliding pulling structure (61). The pulling rope (64) can pull the sliding pulling structure (61) to move through the guide seat (63).

3. The seat belt friction tester according to claim 2, characterized in that: The sliding traction structure (61) has a movable clamping structure (612) at the head end of the traction plate (611), which can clamp and fix the safety belt. The traction plate (611) has a slidable mounting plate (613), which is mounted on the support column (62). The mounting plate (613) has a first pulley (614), and the inner side of the tail end of the traction plate (611) has a second pulley (615). Both the first pulley (614) and the second pulley (615) are connected to the traction rope (64). Both the first pulley (614) and the second pulley (615) can rotate independently. The tail end of the traction plate (611) has a connecting block (616), which is used to connect with the traction rope (64).

4. The seat belt friction tester according to claim 3, characterized in that: The clamping structure (612) includes a fixing plate (6121) mounted on the tension plate (611). A push rod (6122) is provided in the fixing plate (6121), and the push rod (6122) is threadedly installed with the fixing plate (6121). Support rods (6123) are provided on both sides of the push rod (6122), and the support rods (6123) are movably mounted on the fixing plate (6121). In the middle, the support rod (6123) is provided with a pressure plate (6124) at its lower end, the push rod (6122) is provided above the pressure plate (6124), the support rod (6123) is provided with an elastic element (6125) above the fixed plate (6121), and a plurality of clamping rollers (6126) installed in the traction plate (611) are provided below the pressure plate (6124), and a clamping space is formed between the clamping rollers (6126) and the pressure plate (6124).

5. The seat belt friction tester according to claim 4, characterized in that: The pressure plate (6124) has several grooves (6127) below it, and the grooves (6127) match the shape of the clamping roller (6126).

6. The seat belt friction tester according to claim 2, characterized in that: Below the guide seat (63) is a traction motor (65) for pulling the traction rope (64), and the traction motor (65) is installed inside the frame (1).

7. The seat belt friction tester according to claim 3, characterized in that: The pull rope (64) is provided with a first traction rope (641) and a second traction rope (642). The first traction rope (641) and the second traction rope (642) cooperate to drive the traction motor (65) to drive the sliding traction structure (61) to reciprocate.

8. The seat belt friction tester according to claim 7, characterized in that: One end of the first traction rope (641) is installed together with the second pulley (615) provided on the traction plate (611). The first traction rope (641) is wound around the first pulley (614). The first traction rope (641) is installed together with the traction motor (65) through the guide seat (63). The sliding traction structure (61) moves through the cooperation of the first traction rope (641) and the traction motor (65).

9. The seat belt friction tester according to claim 7, characterized in that: The second traction rope (642) is installed together with the connecting block (616) at the tail end of the traction plate (611). The second traction rope (642) is installed together with the traction motor (65) through the guide seat (63). The sliding traction structure (61) moves in cooperation with the traction motor (65) through the second traction rope (642).

10. The seat belt friction tester according to any one of claims 1 to 9, characterized in that: The frame (1) also includes a control console (3), which is located on the workbench (11). The control console (3) is electrically connected to the rocking seat (4) and the seat belt pulling mechanism (6). The control console (3) can control the rocking seat (4) and the seat belt pulling mechanism (6) to work.

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