CN214200653U - Automobile hand brake simulation testing device - Google Patents

Abstract

The application relates to an automobile hand brake simulation testing device, which comprises a hand brake mechanism, a transmission mechanism and a pressure testing mechanism, wherein the pressure testing mechanism comprises a cylinder, a base and lug plates, a track is arranged between a group of lug plates along the longitudinal direction of the inner peripheral surface of the cylinder, and the end part of the track is fixedly connected in a gap formed by the two lug plates oppositely; a sliding block is arranged in the track, and the shape of the sliding block is matched with the internal structure of the track; the lower end surfaces of the sliding blocks are fixedly connected with springs, and the other ends of the springs are fixedly connected to the upper end surface of the base; this application has the effect of the critical point of pressure of accurate detection manual brake analogue test.

Description

Automobile hand brake simulation testing device

Technical Field

The application relates to the technical field of automobile hand brake testing, in particular to an automobile hand brake simulation testing device.

Background

The existing parking brake is a manual brake installed on a motor vehicle, which is called a hand brake for short, and is used for stabilizing the vehicle after the vehicle stops, so that accidents caused by vehicle sliding when the vehicle stops on a slope road surface are avoided. In the hand brake testing process in the prior art, when the handle is pulled to three-fourths of the whole stroke, the hand brake system is required to be in a normal braking position, so before the braking force of the hand brake is checked, the working point is found out firstly, the working point can be determined by the sound of the ratchet wheel, the hand brake is pulled slowly, the click sound of the ratchet wheel is pulled while the ratchet wheel is pulled until the handle is pulled to the end, then the position of three-fourths of the total sound is calculated, and the position is the effective working point of the hand brake handle, although the detection effect can meet the requirement, the efficiency is too low, and the false detection rate is high.

The traditional Chinese invention with the publication number of CN108844757B discloses a fatigue strength test bench for an automobile brake hand brake, which comprises a workbench, a pulling device for pulling a handle of the hand brake, a base device for mounting a hand brake assembly, a pulley device and a load device, wherein the base device is mounted on one side of the top end of the workbench, the load device is mounted on the other side of the top end of the workbench, the pulley device is mounted on the top end of the workbench and positioned between the base device and the load device, the pulling device is mounted on the top end of the workbench and positioned between the base device and the pulley device, and the base device, the pulling device, the pulley device and the load device are linearly arranged.

In view of the above-mentioned related art, the inventor believes that the load-bearing device in this invention has structural instability on a horizontal ground, so that the value obtained by the pressure sensor has an error.

SUMMERY OF THE UTILITY MODEL

In order to make tension sensor can be more accurate detect the pulling force critical point of manual brake analogue test, this application provides an automobile manual brake analogue test device.

The technical scheme provided by the application is as follows:

a hand brake simulation test device for an automobile comprises a hand brake mechanism, a transmission mechanism and a pressure test mechanism, wherein the pressure test mechanism comprises a cylinder, a base and lug plates, a track is arranged between a group of lug plates along the longitudinal direction of the inner peripheral surface of the cylinder, and the end part of the track is fixedly connected in a gap formed by the two lug plates oppositely; a sliding block is arranged in the track, and the shape of the sliding block is matched with the internal structure of the track; the lower end faces of the sliding blocks are fixedly connected with springs, and the other ends of the springs are fixedly connected with the upper end face of the base.

Through adopting above-mentioned technical scheme, the slider remains the ascending stability of horizontal direction throughout in the track motion process, and the terminal surface plays the cushioning effect to the slider down through the spring to slider top structure can be along with the slider motion in-process remain stable, can detect the tensile critical point of manual brake more accurately.

Optionally, the end surface of the rail is arc-shaped and is fixedly connected to the inner circumferential surface of the cylinder, and the end part of the rail departing from the cylinder is provided with an opening structure and is communicated with the hollow part in the cylinder.

Through adopting above-mentioned technical scheme, track terminal surface and drum inner wall looks adaptation for track and drum have the wholeness, and track and drum inner wall area of contact increase make track and drum be connected more closely.

Optionally, the number of the tracks is four, and the tracks are uniformly arrayed on the inner wall of the cylinder around the central axis of the cylinder.

Through adopting above-mentioned technical scheme, the inside gliding structure of track can keep balance in the horizontal direction, and guarantees that the atress is even inside the track to constantly keep horizontal slip inside the track.

Optionally, the upper end surface of the sliding block is provided with a mounting groove at the opening of the end surface of the track, and the size of the mounting groove is the same as that of the opening of the track.

Through adopting above-mentioned technical scheme, the mounting groove can be so that the structure of installing on the slider can move in the track inside, thereby does not take place to interfere with the track inner wall and influence the slip.

Optionally, contact blocks are arranged in the cylinder inside the mounting grooves of the four sliders, and the size of each contact block is smaller than that of the inner circumferential surface of the cylinder.

By adopting the technical scheme, the contact block can move in the vertical direction on the inner wall of the cylinder and does not interfere with the inner wall of the cylinder.

Optionally, the contact piece includes joint portion, joint portion rigid coupling in the outer peripheral face of contact piece, and joint portion is provided with four, and arranges along the even array of outer peripheral face of contact piece, and joint portion size is the same with the mounting groove size of slider.

Through adopting above-mentioned technical scheme, joint portion makes the inseparable joint of contact piece inside the slider for contact piece keeps ascending balance in the drum is inside, and can carry out the syntropy motion along with the motion of slider in the track.

Optionally, a cylindrical groove is formed in the center of the upper end face of the contact block, an internal thread is arranged inside the cylindrical groove, and a tension sensor is connected to the inside of the cylindrical groove in a threaded manner.

By adopting the technical scheme, the tension sensor is in threaded connection with the contact block, so that the tension sensor is more stably installed on the contact block; the tension sensor is used for detecting the change degree of external stress, so that an external pressure signal is converted into an available output electric signal, and an operator can more intuitively define the degree of the pressure applied by the tension sensor by detecting the electric signal generated by the tension sensor.

Optionally, the transmission mechanism includes a pull rod, a fixing block is arranged above the tension sensor, the center of the lower end face of the fixing block is fixedly connected with the upper end face of the tension sensor, and the upper end face of the fixing block is fixedly connected with the lower end face of the pull rod.

By adopting the technical scheme, the fixing block can fix the horizontal position of the tension sensor, so that the tension sensor can be prevented from being incapable of accurately testing tension due to the fact that the tension sensor is in threaded connection with the contact block; the fixed block can drive the tension sensor and the contact block to vertically move upwards, so that the stress condition of the tension sensor changes, and the tension value detected by the tension sensor can be read.

To sum up, the application comprises the following beneficial technical effects:

1. the slider keeps stable in the circumferential direction when sliding in the track, so that the tension sensor above the slider keeps stable in the horizontal direction, and the tension value is measured more accurately;

2. the fixed block and the contact block fix the position of the tension sensor, so that the tension sensor is not easy to deviate in the vertical direction;

3. the spring can play the cushioning effect to the slip of slider in the track to play the supporting role to the slider.

Drawings

FIG. 1 is a schematic structural diagram of a simulation test device for a hand brake of an automobile.

Fig. 2 is a sectional view of the inner structure of the operation table.

Fig. 3 is a structural sectional view of the pressure testing mechanism.

Fig. 4 is a top view of the pressure testing mechanism.

Fig. 5 is a partially enlarged schematic view of a portion a in fig. 4.

In the figure, 1, a hand brake mechanism, 11, an operation table, 12, a hinge shaft, 13, a hand brake body, 14, a hand brake base, 15, a connecting rod, 2, a transmission structure, 21, a steel wire rope, 22, a pulley component, 221, a first fixed pulley, 222, a second fixed pulley, 23, a pull rod, 3, a pressure testing mechanism, 31, a cylinder, 32, a base, 33, an ear plate, 34, a track, 35, a sliding block, 36, a spring, 37, a contact block, 371, a clamping part, 38, a tension sensor, 39 and a fixed block.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses car manual brake simulation testing arrangement.

Referring to fig. 1, an automobile hand brake simulation testing device comprises a hand brake mechanism 1, a transmission mechanism 2 and a pressure testing mechanism 3.

Referring to fig. 1 and 2, the hand brake mechanism 1 includes an operating platform 11, the operating platform 11 is rectangular, the operating platform 11 is parallel to the horizontal ground, and a worker can operate above the operating platform 11; the end face of the operating table 11 is provided with a waist-shaped long hole, a hinge shaft 12 is fixedly connected in the diameter direction of the center position in the waist-shaped long hole, the hinge shaft 12 is cylindrical, and the diameter of the end face is smaller than the thickness of the side wall of the waist-shaped long hole; the upper end face of the operating platform 11 is provided with a hand brake body 13, the articulated shaft 12 penetrates through the end part of the hand brake body 13, so that the hand brake body 13 is articulated inside the waist-shaped long hole of the operating platform 11 and does not interfere with the edge position of the waist-shaped long hole, the hand brake body 13 can do circular motion at the upper end face of the operating platform 11 along the articulated shaft 12, the cross section of the hand brake body 13 is cylindrical, the hand brake body 13 is arranged in a broken line manner, and the broken line of the hand brake body 13 is outwards protruded away from the operating platform 11, so that the design of the hand brake body 13 is more in line with the driving habit of an operator, and the driving environment is more accurately restored; a hand brake base 14 is arranged in a gap between the hand brake body 13 and the horizontal plane of the operating platform 11, the hand brake base 14 is fan-shaped, the side wall of the hand brake base 14 is perpendicular to the end surface of the operating platform 14, and the horizontal length of the hand brake base 14 is smaller than that of the hand brake body 13, so that when the hand brake body 13 is placed on the arc-shaped end surface of the hand brake base 14, the end part of the hand brake body 13 protrudes out of the end part of the hand brake base 14, and a driver can lift the hand brake body 13 by holding the end part of the hand brake body 13; the tip rigid coupling of manual brake body 13 has connecting rod 15 in the below rigid coupling of operation panel 11, and connecting rod 15 is cylindrical, and the size is the same with the cross section size of manual brake body 13, and connecting rod 15 body is seted up along the extension line direction of manual brake body 13 broken line, and connecting rod 15 can carry out the syntropy when manual brake body 13 rotates around articulated shaft 12 and rotate.

Referring to fig. 1, the transmission structure 2 includes a steel wire rope 21, one end of the steel wire rope 21 is fixedly connected to the lower end surface of the connecting rod 15, and the steel wire rope 21 can move along with the movement of the connecting rod 15; a pulley assembly 22 is arranged in a space below the operating platform 11, the pulley assembly 22 comprises a first fixed pulley 221 and a second fixed pulley 222, the first fixed pulley 221 is arranged below the end part of the connecting rod 15, the first fixed pulley 221 is arranged towards the lower end surface 1 of the operating platform 11, the second fixed pulley 222 is fixedly connected to the lower end surface of the operating platform 11, and the first fixed pulley 221 and the second fixed pulley 222 are positioned in the same horizontal plane in the horizontal direction and are parallel to the length direction of the operating platform 11; the wire rope 21 is arranged along the outer peripheral surface of the first fixed pulley 221 away from the lower end surface of the operating platform 11 and is wound on the outer peripheral surface of the second fixed pulley 222 facing the lower end surface of the operating platform 11; the end part of the steel wire rope 21 is fixedly connected with a pull rod 23, the pull rod 23 is cylindrical, and the pull rod 23 can vertically move upwards under the action of the steel wire rope 21.

Referring to fig. 3 and 4, the pressure testing mechanism 3 includes a cylinder 31, the cylinder 31 is a hollow cylinder, and the cylinder 31 is vertically disposed on the ground; the edge position of the inner wall of the bottom of the cylinder 31 is fixedly connected with a base 32, the cross section of the base 32 is rectangular, the end surfaces of the base 32 fixedly connected with the inner wall of the cylinder 31 are matched with the cylinder 31, and the number of the bases 32 is four, and the bases are uniformly arrayed around the central axis of the cylinder 31 at the inner circumferential surface of the cylinder 31; the outer edge of the end face of the cylinder 31 is fixedly connected with ear plates 33 (refer to fig. 5), the ear plates 33 are provided with eight groups which are evenly divided into four groups, the four groups of ear plates 33 are arranged in an array on the end face of the cylinder 31 around the central axis of the cylinder 31, the four groups of ear plates 33 correspond to the four bases 32 one by one, and each group of ear plates 33 and the corresponding base 32 are in the same horizontal plane; a track 34 is arranged between each group of the lug plates 33 along the longitudinal direction of the inner circumferential surface of the cylinder 31, the end part of the track 34 is fixedly connected in a gap formed by the two lug plates 33 oppositely, the end surface of the track 34 is arc-shaped and fixedly connected with the inner circumferential surface of the cylinder 31, the track 34 is of a hollow structure between the two lug plates 33, the end part of the track 34 departing from the cylinder 31 is of an open structure and is mutually communicated with the hollow part in the cylinder 31, four tracks 34 are arranged, and the inner wall of the cylinder 31 is uniformly arrayed around the central axis of the cylinder 31; a sliding block 35 is arranged inside each track 34, the shape of the sliding block 35 is matched with the internal structure of the track 34, an installation groove is formed in the opening of the end face of the track 34 on the sliding block 35, the size of the installation groove is the same as that of the opening of the track 34, and the sliding block 35 can slide inside the track 34; a spring 36 is fixedly connected to the lower end face of each sliding block 35, the other end of the spring 36 is fixedly connected to the upper end face of the base 32, the spring 36 can support the sliding block 35 when sliding in the track 34, and can buffer the descending of the sliding block 35 when external mechanical force is applied to the upper side of the sliding block 35; the contact blocks 37 are arranged in the cylinder 31 inside the mounting grooves of the four sliders 35, the contact blocks 37 are circular and smaller than the inner peripheral surface of the cylinder 31 in size, each contact block 37 comprises a clamping portion 371, the clamping portions 371 are fixedly connected to the outer peripheral surface of each contact block 37, the four clamping portions 371 are evenly arranged along the outer peripheral surface of each contact block 37 in an array mode, and the clamping portions 371 are the same in size as the mounting grooves of the sliders 35, so that the contact blocks 37 can be clamped with the sliders through the clamping portions 371; a cylindrical groove is formed in the center of the upper end face of the contact block 37, internal threads are formed in the cylindrical groove, a tension sensor 38 is connected to the internal threads of the cylindrical groove, and the tension sensor 38 is used for detecting the change degree of external stress, so that an external tension signal is converted into a usable output electric signal, and an operator can more visually define the degree of pressure applied by detecting the electric signal generated by the tension sensor 38; a fixing block 39 is arranged above the tension sensor 38, the fixing block 39 is circular, the center of the lower end face of the fixing block 39 is fixedly connected with the upper end face of the tension sensor 38, and the fixing block 39 is used for fixing the horizontal position of the tension sensor 38 on the contact block 37; the upper end surface of the fixed block 39 is fixedly connected with the lower end surface of the pull rod 23, so that the fixed block 39 can vertically move upwards under the pulling of the pull rod 23, and the contact block 37 can slide in the track 31; in the working process, the pull rod 23 drives the fixing block 39 to move upwards, and then drives the tension sensor 38 and the contact block 37 to move under the action of tension, the tension enables the spring 36 below the contact block 37 to deform, so that the tension sensor 38 can convert the deformation of the spring 36 into a tension value, and the tension limit point of the hand brake body 13 can be found by reading the value of the tension sensor 38.

The implementation principle of the automobile hand brake simulation testing device in the embodiment of the application is as follows: in the course of the work, the staff can pull hand brake body 13 and make spring rope 21 slide in loose pulley assembly 22, the vertical upward movement of spring rope 21 pulling pull rod 23, and then drive the inside fixed block 39 of drum 31, the vertical upward movement of force sensor 38 and contact piece 37, make the spring 36 of terminal surface rigid coupling take place to deform under the contact piece 37, in deformation process, contact piece 37 carries out the syntropy motion along with slider 35 inside track 34, the difference of pulling force size can lead to the difference of the 36 deformation volume of spring, the accessible reads force sensor 38's numerical value this moment and looks for the size of hand brake body 13 limit pulling force value.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a car manual brake simulation testing arrangement, includes manual brake mechanism (1), drive mechanism (2) and pressure test mechanism (3), its characterized in that: the pressure testing mechanism (3) comprises a cylinder (31), a base (32) and lug plates (33), a track (34) is arranged between a group of lug plates (33) along the longitudinal direction of the inner peripheral surface of the cylinder (31), and the end parts of the track (34) are fixedly connected in gaps which are oppositely arranged between the two lug plates (33); the inside of each track (34) is provided with a sliding block (35), and the shape of each sliding block (35) is matched with the inner structure of each track (34); the equal rigid coupling of terminal surface has spring (36) under slider (35), the other end rigid coupling of spring (36) in the up end of base (32).

2. The automobile hand brake simulation test device according to claim 1, characterized in that: the end face of the rail (34) is arc-shaped and fixedly connected to the inner circumferential surface of the cylinder (31), and the end part of the rail (34) departing from the cylinder (31) is of an open structure and is communicated with the hollow part in the cylinder (31).

3. The automobile hand brake simulation test device according to claim 1, characterized in that: the number of the tracks (34) is four, and the inner wall of the cylinder (31) is uniformly arrayed around the central axis of the cylinder (31).

4. The automobile hand brake simulation test device according to claim 1, characterized in that: the upper end face of the sliding block (35) is provided with a mounting groove at an opening of the end face of the track (34), and the size of the mounting groove is the same as that of the opening of the track (34).

5. The automobile hand brake simulation test device according to claim 1, characterized in that: contact blocks (37) are arranged in the cylinder (31) inside the mounting grooves of the four sliding blocks (35), and the size of each contact block (37) is smaller than that of the inner circumferential surface of the cylinder (31).

6. The automobile hand brake simulation test device according to claim 5, characterized in that: contact piece (37) are including joint portion (371), joint portion (371) rigid coupling in the outer peripheral face of contact piece (37), joint portion (371) is provided with four, and follows the even array of outer peripheral face of contact piece (37) arranges, joint portion (371) size with the mounting groove size of slider (35) is the same.

7. The automobile hand brake simulation test device of claim 6, characterized in that: a cylindrical groove is formed in the center of the upper end face of the contact block (37), internal threads are arranged in the cylindrical groove, and a tension sensor (38) is connected to the internal threads of the cylindrical groove.

8. The automobile hand brake simulation test device according to claim 7, characterized in that: the transmission mechanism (2) comprises a pull rod (23), a fixed block (39) is arranged above the tension sensor (38), the center of the lower end face of the fixed block (39) is fixedly connected with the upper end face of the tension sensor (38), and the upper end face of the fixed block (39) is fixedly connected with the lower end face of the pull rod (23).

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