CN219996522U - Dummy trunk bending calibration equipment for automobile crash test - Google Patents

Abstract

The utility model relates to a trunk bending calibration device for an automobile crash test dummy, and belongs to the field of automobile safety detection. The calibration equipment comprises a calibration equipment bracket, a roller assembly, a pressing device, an electric control system, a rear nylon belt, a front nylon belt, a tension frame, a buttock mounting seat, a tension sensor assembly, a table roller assembly, a motor driving device and a guide wheel device; the nylon belt at the front side sequentially bypasses the guide wheel device and the table surface roller assembly to be connected with the tension sensor assembly; the nylon belt at the rear side sequentially bypasses the two groups of roller assemblies and is fixed at the upper part of the tension frame; the tension frame is connected with the tension sensor assembly; the tension frame is connected with a dummy thoracic vertebra box of the dummy trunk, and the buttocks of the dummy trunk are connected with the buttock mounting seat; the electric control system drives the front nylon belt and the rear nylon belt to pull the dummy trunk to bend forwards or stretch backwards through the motor driving device. The calibration equipment is more convenient to operate, the working efficiency is effectively improved, the maintenance is convenient, and the movement is convenient.

Description

Dummy trunk bending calibration equipment for automobile crash test

Technical Field

The utility model relates to the field of automobile safety detection, in particular to a dummy trunk bending calibration device for an automobile collision test.

Background

In the technical field of automobile safety detection, an automobile collision test is an important test means for checking automobile safety performance. The dummy for the test is taken as a basic tool of the automobile crash test, and plays a vital role in the development of automobile safety business. In order to ensure the accuracy of the test data, the dummy used in the automobile crash test is recalibrated before each test.

In the prior art, equipment for calibrating the bending performance of the trunk of the dummy is characterized in that a back roller assembly is fixed on a vertical rod of a device bracket, and a driving assembly drives a back pull rope bypassing the back roller assembly to pull a tension frame to move backwards. The pulling frame drives the trunk of the tested dummy fixed on the pelvis support to bend backwards. The table surface roller assembly and the front surface roller assembly are respectively arranged on the device bracket and the working table surface along the central line of the working table surface. The driving assembly drives the front pull rope which sequentially bypasses the front roller assembly and the table roller assembly to pull the trunk of the tested dummy fixed on the pelvis support to bend forwards, and the calibration test of the trunk bending performance of the dummy is completed. However, the existing calibration device has the following problems:

(1) At least two operators are needed to cooperate to finish the process of fixing the dummy on the pelvic support, one operator needs to lift the buttocks of the dummy to a certain height to align with the pelvic support, the other operator fixes the buttocks on the buttocks support by screws, the labor is wasted, and the whole process is time-consuming and labor-consuming.

(2) The motor driving system of the current calibration equipment is connected with the belt into an integrated structure, so that the motor box cannot be detached independently, and the internal structure of the motor box cannot be maintained conveniently.

(3) The front pull rope of the current calibration equipment needs to bypass from the front roller assembly at the front part of the bracket and stretch out after being pressed down by the table roller assembly, and the pull rope needs to have larger pulling force.

(4) The lower part of the bracket of the current calibration device is empty, the space cannot be fully utilized, and the calibration device is inconvenient to move.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the trunk bending calibration equipment for the automobile crash test dummy, which is simple and reliable to operate, convenient and fast to maintain, reasonable in stress, practical and attractive.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows:

the trunk bending calibration equipment for the automobile crash test dummy comprises a calibration equipment bracket, a roller assembly, a pressing device, an electric control system, a rear nylon belt, a front nylon belt, a tension frame, a hip mounting seat, a tension sensor assembly, a table roller assembly, a motor driving device and a guide wheel device;

the two groups of roller assemblies are arranged on the upright post at the rear side of the calibration equipment bracket up and down and can lift along the upright post; the pressing device and the table-board roller assemblies are respectively arranged on two sides above the calibration equipment bracket; the motor driving device and the guide wheel device are respectively arranged below the calibration equipment bracket, and the guide wheel device is positioned between the table roller assembly and the motor driving device;

the front nylon belt and the rear nylon belt extend out from the front side and the rear side of the motor driving device respectively; the front nylon belt sequentially bypasses the guide wheel device and the table roller assembly to be connected with the tension sensor assembly; the rear nylon belt sequentially bypasses the two groups of roller assemblies and is fixed at the upper part of the tension frame; the tension frame is connected with the tension sensor assembly; the tension frame is connected with a dummy thoracic vertebra box of a dummy trunk, the buttocks of the dummy trunk are connected with the buttock mounting seat, and the buttock mounting seat is fixed on the calibration equipment support through the compression device; the electric control system drives the front nylon belt and the rear nylon belt to pull the dummy trunk to bend forwards or stretch backwards through the motor driving device.

Further, the motor driving device comprises a motor case, a chain, a motor case bottom plate, a front shaft assembly, a motor assembly and a rear shaft assembly; the motor box is arranged below the calibration equipment support, the motor box bottom plate is connected to the bottom of the motor box through bolts, the front shaft assembly, the motor assembly and the rear shaft assembly in the motor box are respectively arranged on the motor box bottom plate, the front shaft assembly and the rear shaft assembly are respectively arranged on the front side and the rear side of the motor assembly, and the output shaft of the motor assembly is respectively connected with the front shaft assembly and the rear shaft assembly through the chains; one ends of the front nylon belt and the rear nylon belt are respectively connected to shafts of the front shaft assembly and the rear shaft assembly in a winding manner; the front axle assembly and the rear axle assembly each include a clutch; the front shaft assembly, the motor assembly and the rear shaft assembly are respectively connected with the electric control system.

Further, the motor driving device further comprises a chain pressing device assembly, wherein the chain pressing device assembly is respectively arranged on the chain side between the motor assembly and the front shaft assembly and the rear shaft assembly; the chain pressing device assembly is used for adjusting the pressing force on the chain.

Further, the pressing device is a push-pull type quick clamp.

Further, the compressing device comprises a fixed wedge head, a wedge block, a guide groove, a propelling device and a clamp mounting plate; the fixture mounting plate is fixedly mounted on the calibration equipment support, the fixed wedge head, the guide groove and the propelling device are respectively mounted on the fixture mounting plate, the wedge block is arranged in the guide groove, and the sliding wedge head at the front end of the propelling device is connected with the wedge block; the pushing device pushes the wedge block to slide in the guide groove through the sliding wedge head, and the pushing device is matched with the fixed wedge head to clamp and fix the wedge block; the hip mount is mounted above the wedge.

Further, the wedge blocks are symmetrically provided with V-shaped grooves on two opposite sides, and the fixed wedge heads and the sliding wedge heads of the pushing device are respectively embedded into the V-shaped grooves when the wedge blocks are clamped and fixed.

Further, the calibration equipment support is of a cabinet structure, and a storage space is formed in the calibration equipment support; supporting casters are respectively arranged at four corners of the bottom of the calibration equipment bracket; the stand column is arranged at the rear side of the calibration equipment support.

Further, the tension frame is connected with the tension sensor assembly through a bolt; and the tension frame is also provided with an inclination sensor, and the inclination sensor and a tension sensor in the tension sensor assembly are respectively connected with the electric control system.

Further, the table roller assembly can adjust the front and rear positions; the calibration equipment further comprises a trunk metal ruler, wherein the trunk metal ruler is arranged on the calibration equipment support and positioned on one side of the table-board roller assembly and used for marking position scales of the table-board roller assembly when different dummy trunks are used for calibration tests.

Further, the tension frame comprises a T-shaped support, support angle aluminum, a steel wire rope terminal, a tension rod, a transverse pull rod and a back mounting plate; the lower part of the T-shaped support is fixedly connected with the back thoracic vertebra box of the dummy trunk through the back mounting plate, the upper part of the T-shaped support is connected with the support angle aluminum, and the upper part of the T-shaped support is provided with a spring buckle for being connected with the rear nylon belt; the two ends of the supporting angle aluminum are respectively connected with one tension rod, and the two tension rods are respectively connected with the two ends of the transverse pull rod through the steel wire rope terminal; the transverse pull rod is connected with the pull force sensor assembly.

The utility model has the beneficial effects that:

the calibration equipment can be independently operated by an operator to install and fix the dummy trunk, is time-saving and labor-saving, is simple and quick, and effectively improves the working efficiency. The motor shell of the motor driving device can be independently disassembled, the tensioning degree of the chain can be adjusted, and the maintenance is more convenient. In addition, the front nylon belt extends out through the guide wheel device and the table surface roller assembly, so that the stress of the front nylon belt is effectively reduced, the structural design is ingenious, the table surface roller assembly can adjust the front and rear positions, the calibration equipment can be suitable for calibrating different dummy trunk bodies, and the application range of the calibration equipment is enlarged. In addition, the calibration equipment support is designed into a cabinet structure, the storage function is increased, the device is practical and attractive, and the whole calibration equipment can be moved to any position to be fixed by the supporting casters arranged on the bottom plate of the calibration equipment support, so that the movement is more convenient.

Drawings

FIG. 1 is an isometric view of a trunk curve calibration device for an automobile crash test dummy of the present utility model;

FIG. 2 is a side view of a trunk curve calibration device for an automobile crash test dummy of the present utility model;

FIG. 3 is an isometric view of a motor drive apparatus of the present utility model;

FIG. 4 is a schematic view of a compressing apparatus according to the present utility model;

fig. 5 is a schematic view of a wedge block according to the present utility model.

Wherein: 1-calibration equipment support, 2-back roller assembly, 3-hold-down device, 3.1-fixed wedge, 3.2-wedge, 3.3-guide slot, 3.4-propulsion device, 3.5-fixture mounting plate, 4-electric control system, 5-back nylon belt, 6-front nylon belt, 7-tension frame, 8-hip mount, 9-tension sensor assembly, 10-torso metal rule, 11-mesa roller assembly, 12-motor drive device, 12.1-chain, 12.2-chain hold-down device assembly, 12.3-motor box bottom plate, 12.4-front axle assembly, 12.5-motor assembly, 12.6-back axle assembly, 13-guide wheel device.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and examples.

The terms of directions such as up, down, left, right, front and rear in the present document are established based on the positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.

In the present utility model, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected or detachably connected, integrally connected or mechanically connected, electrically connected or communicable with each other, directly connected or indirectly connected through an intermediate medium, or communicated between two components, or an interaction relationship between two components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiment describes a device for calibrating the bending of the trunk of a dummy in an automobile crash test, which is used for calibrating the bending of the trunk of the dummy used in the automobile crash test.

As shown in fig. 1 and 2, the calibration device comprises a calibration device bracket 1, a roller assembly 2, a pressing device 3, an electric control system 4, a rear nylon belt 5, a front nylon belt 6, a tension frame 7, a hip mounting seat 8, a tension sensor assembly 9, a trunk metal ruler 10, a table roller assembly 11, a motor driving device 12 and a guide wheel device 13.

The two groups of roller assemblies 2 are arranged on the upright post at the rear side of the calibration equipment support 1 up and down and can respectively lift along the upright post. Preferably, the upright is located at one end of the centerline of the calibration apparatus support 1. The electric control system 4 is arranged on the upright post through the transverse post and can adjust the height along the upright post, meanwhile, the electric control system 4 can rotate 360 degrees relative to the transverse post, and the electric control system 4 can be more convenient for operators to operate through height adjustment and angle adjustment. Preferably, the electric control system 4 is arranged between the two sets of roller assemblies 2, so that the mutual interference between the electric control system 4 and the roller assemblies 2 can be avoided.

The compressing device 3 is arranged on one side above the table top plate of the calibration equipment support 1, the table top roller assembly 11 and the guide wheel device 13 on the other side are respectively arranged above and below the table top plate, the motor driving device 12 is fixed at the bottom of the table top plate of the calibration equipment support 1, and the guide wheel device 13 is positioned between the table top roller assembly 11 and the motor driving device 12. Preferably, the hold down device 3, the table top roller assembly 11 and the guide wheel assembly 13 are positioned along the center line of the table top. The front nylon strap 6 and the rear nylon strap 5 extend from the front and rear sides of the motor drive 12, respectively, preferably the output nylon strap end of the motor drive 12 is located below the center line of the deck plate of the calibration equipment support 1. The front nylon belt 6 sequentially bypasses the guide wheel device 13 and the table roller assembly 11 to be connected with a front bracket of the tension sensor assembly 9. The nylon belt 5 at the rear side sequentially bypasses the two groups of roller assemblies 2 and is fixed on a spring buckle at the upper part of the tension frame 7. The rear side bracket of the tension sensor assembly 9 is connected with the transverse pull rod at the front side of the tension frame 7 through a bolt. The back mounting plate at the lower part of the tension frame 7 is fixed on the dummy thoracic vertebra box through a plurality of screws, and the hip mounting seat 8 is fixed on the dummy hip through a plurality of screws and is fixed on the table board of the calibration equipment support 1 through the pressing device 3.

After the trunk of the detected dummy is fixed, the front nylon belt 6 is driven by the motor driving device 12 to pull the trunk of the detected dummy to bend forwards, or the rear nylon belt 5 is driven to pull the trunk of the detected dummy to stretch backwards, wherein the front nylon belt 6 is smaller in stress and more reasonable in structural design compared with the existing collision test.

The tension sensor is arranged in the middle of the tension sensor assembly 9, and can detect the tension loaded on the trunk of the dummy in real time. An inclination sensor is fixed on the tension frame 7 and is used for measuring the inclination of the bending of the trunk of the dummy. The tension sensor and the inclination angle sensor are respectively connected with the electric control system 4 in data, and tension information detected by the tension sensor and inclination angle information detected by the inclination angle sensor are respectively transmitted to the electric control system 4.

The motor driving device 12 in this embodiment includes a motor case, a chain 12.1, a chain pressing device assembly 12.2, a motor case bottom plate 12.3, a front axle assembly 12.4, a motor assembly 12.5, and a rear axle assembly 12.6, as shown in fig. 3.

The motor box is arranged below the calibration equipment support 1, and the motor box bottom plate 12.3 is connected to the bottom of the motor box through bolts. The chain pressing device assembly 12.2, the front axle assembly 12.4, the motor assembly 12.5 and the rear axle assembly 12.6 are respectively arranged on the motor box bottom plate 12.3, the front axle assembly 12.4 and the rear axle assembly 12.6 are respectively arranged on the front side and the rear side of the motor assembly 12.5, and one ends of the front nylon belt 6 and the rear nylon belt 5 are respectively wound and connected on the axles of the front axle assembly 12.4 and the rear axle assembly 12.6. The output shaft of the motor assembly 12.5 is connected to the front axle assembly 12.4 and the rear axle assembly 12.6 respectively by a chain 12.1. The front axle assembly 12.4, the motor assembly 12.5 and the rear axle assembly 12.6 are respectively connected with the electric control system 4 in data, when the front clutch in the front axle assembly 12.4 is sucked, the motor assembly 12.5 controls the front nylon belt 6 to stretch and retract, and when the rear clutch in the rear axle assembly 12.6 is sucked, the motor assembly 12.5 controls the rear nylon belt 5 to stretch and retract. The electronic control system 4 controls one of the clutches in the front axle assembly 12.4 and the rear axle assembly 12.6 to be in an engaged state and the other clutch to be in a disengaged state.

The chain pressing device assemblies 12.2 are respectively arranged on the sides of the chains 12.1 between the motor assemblies 12.5 and the front shaft assemblies 12.4 and the rear shaft assemblies 12.6, and the pressing force of the pressing wheels of the chain pressing device assemblies 12.2 on the chains 12.1 can be controlled by adjusting the upper and lower positions of the screw rods in the chain pressing device assemblies 12.2, so that the chains 12.1 always maintain a certain tensioning force, and maintenance is more convenient.

The motor box of the motor driving device 12 in this embodiment is convenient to disassemble, each component in the motor box can be disassembled independently, the tensioning degree of the chain 12.1 can be adjusted, and maintenance is more convenient.

The pressing device 3 used in this embodiment is a push-pull type quick clamp, and as shown in fig. 4, includes a fixed wedge 3.1, a wedge block 3.2, a guide groove 3.3, a pushing device 3.4 and a clamp mounting plate 3.5.

The fixture mounting plate 3.5 is fixedly mounted on a table panel of the calibration equipment support 1, the fixed wedge head 3.1, the guide groove 3.3 and the propelling device 3.4 are respectively mounted on the fixture mounting plate 3.5, the wedge block 3.2 is arranged in the guide groove 3.3 and can slide in the middle of the guide groove 3.3, the sliding wedge head at the front end of the propelling device 3.4 is connected with the wedge block 3.2, and the propelling device 3.4 pushes the wedge block 3.2 to slide in the guide groove 3.3 when the propelling device 3.4 forwards and is matched with the fixed wedge head 3.1 to clamp and fix the wedge block 3.2. The propulsion means 3.4 may be operated under control of the electronic control system 4 for the operator to operate on the electronic control system 4. The wedge 3.2 top is through a plurality of equipartitions's screw and buttock mount pad 8 fixed connection, and closing device 3 is through pressing from both sides tight fixed wedge 3.2, and then fixes the dummy truck who is connected with it through buttock mount pad 8, and this kind of fixed dummy truck's operation compares fixed method among the prior art more simple and fast, and the operator can independently carry out the fixed operation of installation of dummy truck, labour saving and time saving has improved work efficiency effectively.

Preferably, as shown in fig. 5, V-shaped grooves are symmetrically arranged on two opposite sides of the wedge-shaped block 3.2 in this embodiment, and when the wedge-shaped block 3.2 is clamped and fixed, the sliding wedges of the fixed wedge-shaped head 3.1 and the pushing device 3.4 are respectively embedded into the V-shaped grooves, so that they can maintain stable clamping force, and the wedge-shaped block 3.2 is ensured to be in a compressed state all the time. Four screw mounting holes are uniformly distributed above the wedge-shaped block 3.2 and are used for being connected with the hip mounting seat 8 through screws.

The tension bracket 7 of the embodiment comprises a T-shaped support, a support angle aluminum, a steel wire rope terminal, a tension rod, a transverse pull rod and a back mounting plate. The lower part of T type support passes through back mounting panel and the back thoracic vertebra box fixed connection of dummy truck, and the upper portion of T type support links to each other with supporting angle aluminium, and the spring fastener is installed on T type support upper portion for be connected with rear side nylon belt 5. Two ends of the supporting angle aluminum are respectively connected with a tension rod, and the two tension rods are respectively connected with two ends of the transverse tension rod through steel wire rope terminals. The middle part of the transverse pull rod is connected with a rear side bracket of the pull force sensor assembly 9 through a bolt.

The table roller assembly 11 and the guide wheel device 13 are respectively arranged above and below the table panel along the center line of the table panel of the calibration equipment support 1, and the guide wheel device 13 is positioned between the table roller assembly 11 and the motor driving device 12. The table top roller assembly 11 is provided with a waist-shaped hole, the table top roller assembly 11 can be connected to the table top plate through the screw holes and the waist-shaped hole in a bolt mode, the front and back positions of the table top roller assembly 11 can be greatly adjusted through the screw holes, and fine adjustment of the front and back positions of the table top roller assembly 11 is achieved through the waist-shaped hole. The trunk metal ruler 10 is arranged on the table top along a plurality of screw holes and is used for marking the position scales of the table top roller assemblies 11 when different dummy trunks are subjected to calibration tests.

The roller assembly 2 in this embodiment includes a roller mounting seat, a slider bracket, shoulder screws, rollers, a slider and an adjusting handle. The slider is installed inside the slider support, and the slider support cup joints on the stand of demarcation equipment support 1, and the slider support can follow the stand through the slider and slide, adjusts the handle and installs on the slider support, and the bottom can meet with the slider, and the slider support passes through the regulation handle lock to be fastened on the stand, and when adjusting the handle unblock, the slider support can follow stand upper and lower slide and adjust the upper and lower position of roller component 2. The gyro wheel passes through the gyro wheel mount pad to be fixed on the slider support, and shoulder screw passes the gyro wheel and fixes in gyro wheel mount pad side intermediate position, and wherein shoulder screw of upper portion wheel subassembly 2 is located the gyro wheel upside, and shoulder screw of lower part wheel subassembly 2 is located the gyro wheel downside, can prevent effectively that rear side nylon belt 5 from coming off from the gyro wheel. Preferably, the shoulder screw is a hexagon socket head cap shoulder screw.

The calibration equipment support 1 of this embodiment is cabinet body structure, has the storing space in cabinet body structure, has increased the storing function. One side of the cabinet body structure is provided with a cabinet door, which is convenient for storing and taking articles. The stand column for installing the roller assembly 2 is arranged at the rear side of the calibration equipment support 1, and supporting casters are respectively arranged at four corners of the bottom of the calibration equipment support 1, so that the calibration equipment can be conveniently moved to any position for fixing. The calibration device support 1 of the present embodiment is practical and attractive in construction.

While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the implementations of the utility model and are not intended to limit the scope of the utility model. The details of the embodiments are not to be taken as limiting the scope of the utility model, and any obvious modifications based on equivalent changes, simple substitutions, etc. of the technical solution of the utility model fall within the scope of the utility model without departing from the spirit and scope of the utility model.

Claims (10)

1. The trunk bending calibration equipment for the automobile crash test dummy is characterized by comprising a calibration equipment bracket (1), a roller assembly (2), a pressing device (3), an electric control system (4), a rear nylon belt (5), a front nylon belt (6), a tension frame (7), a hip mounting seat (8), a tension sensor assembly (9), a table roller assembly (11), a motor driving device (12) and a guide wheel device (13);

the two groups of roller assemblies (2) are arranged on the upright post at the rear side of the calibration equipment bracket (1) up and down and can be lifted along the upright post; the pressing device (3) and the table-board roller assemblies (11) are respectively arranged at two sides above the calibration equipment bracket (1); the motor driving device (12) and the guide wheel device (13) are respectively arranged below the calibration equipment bracket (1), and the guide wheel device (13) is positioned between the table roller assembly (11) and the motor driving device (12);

the front nylon belt (6) and the rear nylon belt (5) respectively extend out from the front side and the rear side of the motor driving device (12); the front nylon belt (6) sequentially bypasses the guide wheel device (13) and the table surface roller assembly (11) to be connected with the tension sensor assembly (9); the rear nylon belt (5) sequentially bypasses the two groups of roller assemblies (2) and is fixed at the upper part of the tension frame (7); the tension frame (7) is connected with the tension sensor assembly (9); the tension frame (7) is connected with a dummy thoracic vertebra box of a dummy trunk, the buttocks of the dummy trunk are connected with the buttock mounting seat (8), and the buttock mounting seat (8) is fixed on the calibration equipment bracket (1) through the compression device (3); the electric control system (4) drives the front nylon belt (6) and the rear nylon belt (5) to pull the dummy trunk to bend forwards or stretch backwards through the motor driving device (12).

2. The vehicle crash test dummy torso bending calibration apparatus of claim 1, wherein the motor drive device (12) comprises a motor case, a chain (12.1), a motor case floor (12.3), a front axle assembly (12.4), a motor assembly (12.5), and a rear axle assembly (12.6); the motor box is arranged below the calibration equipment bracket (1), the motor box bottom plate (12.3) is connected to the bottom of the motor box through bolts, the front shaft assembly (12.4), the motor assembly (12.5) and the rear shaft assembly (12.6) are respectively arranged on the motor box bottom plate (12.3) in the motor box, the front shaft assembly (12.4) and the rear shaft assembly (12.6) are respectively arranged on the front side and the rear side of the motor assembly (12.5), and the output shaft of the motor assembly (12.5) is respectively connected with the front shaft assembly (12.4) and the rear shaft assembly (12.6) through the chain (12.1); one ends of the front nylon belt (6) and the rear nylon belt (5) are respectively connected to shafts of the front shaft assembly (12.4) and the rear shaft assembly (12.6) in a winding manner; -said front axle assembly (12.4) and said rear axle assembly (12.6) each comprise a clutch; the front shaft assembly (12.4), the motor assembly (12.5) and the rear shaft assembly (12.6) are respectively connected with the electric control system (4).

3. The vehicle crash test dummy torso bending calibration apparatus of claim 2, wherein said motor drive means (12) further comprises a chain hold-down assembly (12.2), said chain hold-down assembly (12.2) being mounted on a side of said chain (12.1) between said motor assembly (12.5) and said front and rear axle assemblies (12.4, 12.6), respectively; the chain pressing device assembly (12.2) is used for adjusting the pressing force on the chain (12.1).

4. The automobile crash test dummy trunk bending calibration device according to claim 1, wherein the hold-down means (3) is a push-pull quick clamp.

5. The automobile crash test dummy trunk bending calibration apparatus according to claim 4, wherein the hold-down device (3) comprises a fixed wedge (3.1), a wedge (3.2), a guide groove (3.3), a propulsion device (3.4) and a clamp mounting plate (3.5); the fixture mounting plate (3.5) is fixedly mounted on the calibration equipment support (1), the fixed wedge head (3.1), the guide groove (3.3) and the pushing device (3.4) are respectively mounted on the fixture mounting plate (3.5), the wedge block (3.2) is arranged in the guide groove (3.3), and the sliding wedge head at the front end of the pushing device (3.4) is connected with the wedge block (3.2); the pushing device (3.4) pushes the wedge block (3.2) to slide in the guide groove (3.3) through the sliding wedge head, and the pushing device (3.4) is matched with the fixed wedge head (3.1) to clamp and fix the wedge block (3.2); the hip mounting seat (8) is mounted above the wedge-shaped block (3.2).

6. The device for calibrating the bending of the trunk of the automobile crash test dummy according to claim 5, wherein the wedge-shaped blocks (3.2) are symmetrically provided with V-shaped grooves on two opposite sides, and the fixed wedge heads (3.1) and the sliding wedge heads of the propelling device (3.4) are respectively embedded into the V-shaped grooves when the wedge-shaped blocks (3.2) are clamped and fixed.

7. The trunk bending calibration device for the automobile crash test dummy according to claim 1, wherein the calibration device support (1) is of a cabinet structure, and a storage space is formed inside the calibration device support (1); four corners of the bottom of the calibration equipment bracket (1) are respectively provided with supporting casters; the stand column is arranged at the rear side of the calibration equipment support (1).

8. The automobile crash test dummy trunk bending calibration equipment according to claim 1, wherein the tension bracket (7) is connected with the tension sensor assembly (9) through a bolt; and the tension frame (7) is also provided with an inclination sensor, and the inclination sensor and a tension sensor in the tension sensor assembly (9) are respectively connected with the electric control system (4).

9. The automobile crash test dummy torso bending calibration apparatus of claim 1, wherein said tabletop roller assembly (11) is capable of adjusting a front-to-rear position; the calibration equipment further comprises a trunk metal ruler (10), wherein the trunk metal ruler (10) is arranged on the calibration equipment support (1) and positioned on one side of the table-board roller assembly (11) and used for marking position scales of the table-board roller assembly (11) when different dummy trunks are used for calibration tests.

10. The automobile crash test dummy trunk bending calibration equipment according to claim 1, wherein the tension bracket (7) comprises a T-shaped support, a support angle aluminum, a wire rope terminal, a tension rod, a transverse pull rod and a back mounting plate; the lower part of the T-shaped support is fixedly connected with the back thoracic vertebra box of the dummy trunk through the back mounting plate, the upper part of the T-shaped support is connected with the support angle aluminum, and the upper part of the T-shaped support is provided with a spring buckle for being connected with the rear nylon belt (5); the two ends of the supporting angle aluminum are respectively connected with one tension rod, and the two tension rods are respectively connected with the two ends of the transverse pull rod through the steel wire rope terminal; the transverse pull rod is connected with the pull force sensor assembly (9).