阅读说明：本技术 一种弹簧拆装及静刚度测试装置 (Spring dismouting and quiet rigidity testing arrangement ) 是由 周长峰 于 2021-09-28 设计创作，主要内容包括：本发明提供一种弹簧拆装及静刚度测试装置,包括框架、固定机构、夹紧机构、加载及导向机构、测试机构,固定机构、加载及导向机构安装于框架上,加载及导向机构中的执行螺杆旋转,带动压紧板、钩爪和螺旋弹簧向下运动,从而取出封盖并卸下弹簧,安装弹簧时与此过程相反；将钩爪换成球形钩爪,并连接位移传感器和压力传感器后,则可以测量弹簧上连续加载时的压力差和螺旋弹簧产生的位移差,从而计算得到弹簧的静刚度。该装置的有益性在于,固定机构能有效夹紧螺旋弹簧,保证安全高效地拆装螺旋弹簧和减振器装配体,同时该装置也可以方便地测出螺旋弹簧的静刚度。(The invention provides a spring dismounting and static stiffness testing device which comprises a frame, a fixing mechanism, a clamping mechanism, a loading and guiding mechanism and a testing mechanism, wherein the fixing mechanism and the loading and guiding mechanism are arranged on the frame; after the hook claw is changed into a spherical hook claw and the displacement sensor and the pressure sensor are connected, the pressure difference of the spring during continuous loading and the displacement difference generated by the spiral spring can be measured, and therefore the static stiffness of the spring is obtained through calculation. The device has the beneficial effects that the fixing mechanism can effectively clamp the spiral spring, the spiral spring and the shock absorber assembly body can be safely and efficiently disassembled, and meanwhile, the device can also conveniently measure the static stiffness of the spiral spring.)

1. The spring assembling and disassembling and static stiffness testing device is characterized in that the frame comprises a horizontal bottom plate, a lateral upper plate, a horizontal upper plate, a left vertical plate and a right vertical plate, a foundation bolt through hole, a guide rod hole and an execution screw deep groove ball bearing mounting hole are formed in the horizontal bottom plate, the fixing mechanism comprises a fixed clamping block and a middle fixing seat, the fixing mechanism is connected with the frame through a bolt, the clamping mechanism comprises a clamping block base, a clamping block, a pivot and a hook claw which are combined together and fixed on a pressing plate, the loading and guiding mechanism comprises a guide rod, an execution screw and a pressing plate, the guiding mechanism is fixed on the frame, the pressing plate is driven by the execution screw to do vertical linear motion along the guide rod, and the testing mechanism comprises a displacement sensor, The pull wire, the pull wire fixing plate, the hemispherical hook and the pressure sensor are arranged on the base;

the device for assembling, disassembling and testing the static stiffness of the spring is characterized in that the shock absorber and the fixed rod are fixed on a lateral bottom plate, and the lateral bottom plate is provided with a V-shaped opening;

the device for assembling, disassembling and testing the static stiffness of the spring is characterized in that a hemispherical claw of a testing mechanism is connected with a pressure sensor and presses on a spiral spring sealing cover, a stay wire fixing plate is fixedly connected with the sealing cover, one end of a stay wire is connected to the stay wire fixing plate, the other end of the stay wire is connected to a displacement sensor, an execution screw drives a pressing plate to move downwards, the sum of the pressures of the four pressure sensors is recorded as sigma F,the displacement of the spiral spring measured by the displacement sensor is x, and the sum of the pressures of the pressure sensors obtained by the ith loading is sigma F_iThe displacement of the coil spring at the i-th loading is denoted as x_iAnd after the ith (i is more than or equal to 2) loading, the static stiffness of the obtained spiral spring is K_i＝(∑F_i-∑F_i-1)/(x_i-x_i-1) After averaging, the static stiffness of the coil spring is

2. The device for testing the disassembly and assembly of a spring and the static stiffness of the spring as claimed in claim 1, wherein the two side surfaces of the fixed clamping block are provided with V-shaped grooves, the bottom surface of the fixed clamping block is provided with a through hole, the middle fixing seat is provided with an elongated groove, and the through hole of the fixed clamping block is matched with the elongated groove of the middle fixing seat for installation.

3. The spring assembling and disassembling and static stiffness testing device according to claim 1, wherein the clamping block base can move along the elongated slot of the pressing plate, the clamping block can rotate on the clamping block base relatively, one end of the hook claw is connected to the clamping block and can rotate around the pivot, and the other end of the hook claw is hooked on the coil spring.

4. The spring assembling and disassembling and static stiffness testing device according to claim 1, wherein the execution screw is fixed on the horizontal upper plate and the horizontal bottom plate through deep groove ball bearings, and the execution screw is matched with a threaded hole of the pressing plate.

5. The spring assembling and disassembling and static stiffness testing device according to claim 1, wherein the upper end and the lower end of the guide rod are threaded, the guide rod penetrates through a linear bearing, the linear bearing is connected with the pressing plate, the upper end of the guide rod is fixed on the horizontal upper plate through a nut, and the lower end of the guide rod is fixed on the horizontal bottom plate.

Technical Field

The invention relates to a device for assembling and disassembling a shock absorber and a spring assembly and testing static stiffness, and belongs to the field of automobile part assembling and disassembling and testing tools.

Background

Most of the existing suspension damping parts of cars and electric vehicles are formed by combining a spiral spring and a damper. In order to meet practical requirements, the spiral spring has a certain pretightening force, and when the spiral spring and the shock absorber are to be disassembled or maintained, the spiral spring needs to be separated from an assembly body of the spiral spring and the shock absorber. The prior dismounting device is expensive, and the dismounting applicability of the small-sized spiral spring shock absorber assembly body such as an electric vehicle is poor, so that a new spring dismounting device needs to be designed, the spiral spring can be safely and reliably dismounted, the spiral spring and the shock absorber are reassembled into a whole after being overhauled, and the static stiffness of the spiral spring can be tested.

Disclosure of Invention

The invention aims to solve the problems of disassembly and assembly of the spiral spring and the shock absorber assembly body and the static stiffness test of the spiral spring, and realize the disassembly and assembly and the static stiffness test of the spiral spring and the shock absorber assembly body of the sedan and the electric vehicle on the premise of ensuring the safety.

The invention relates to a spring dismounting and static stiffness testing device, which comprises a frame, a fixing mechanism, a clamping mechanism, a loading and guiding mechanism and a testing mechanism, it is characterized in that the frame consists of a horizontal bottom plate, a lateral upper plate, a horizontal upper plate, a left vertical plate and a right vertical plate, the horizontal bottom plate is provided with a foundation bolt through hole, a guide rod hole and a deep groove ball bearing mounting hole matched with an execution screw rod, the fixing mechanism comprises a fixed clamping block and a middle fixed seat, the fixing mechanism is connected with the frame through a bolt, the loading and guiding mechanism comprises a guide rod, an execution screw rod and a pressing plate, the guide mechanism is fixed on the frame, the pressing plate is driven by the execution screw rod to do vertical linear motion along the guide rod, the clamping mechanism comprises a clamping block base, a clamping block, a pivot and a claw which are combined together and fixed on the pressing plate.

The device for assembling, disassembling and testing the static stiffness of the spring is characterized in that the shock absorber and the fixed rod are fixed on the lateral bottom plate, and the lateral bottom plate is provided with a V-shaped opening.

The device for assembling, disassembling and testing the static stiffness of the spring is characterized in that V-shaped grooves are formed in two side faces of the fixed clamping block, a through hole is formed in the bottom face of the fixed clamping block, an elongated groove is formed in the middle fixing seat, and the through hole of the fixed clamping block is matched with the elongated groove of the middle fixing seat.

The spring dismounting and static stiffness testing device is characterized in that the clamping block base can move along the long groove of the pressing plate, the clamping block can rotate on the clamping block base relatively, one end of the hook claw is connected to the clamping block and can rotate around the pivot, and the other end of the hook claw is hooked on the spiral spring.

The device for assembling, disassembling and testing static stiffness of the spring is characterized in that the execution screw rod is fixed on the horizontal upper plate and the horizontal bottom plate through the deep groove ball bearing, the screw rod is matched with the threaded hole of the pressing plate, and the horizontal upper plate and the horizontal bottom plate areThe assembly tolerance of the bearing mounting hole isThe tolerance of the shafts at the two ends of the execution screw is

The spring dismounting and static stiffness testing device is characterized in that the upper end and the lower end of the guide rod are provided with threads, the guide rod penetrates through the linear bearing, the linear bearing is connected with the pressing plate, the upper end of the guide rod is fixed on the horizontal upper plate through the nut, and the lower end of the guide rod is fixed on the horizontal bottom plate.

The spring dismounting and static stiffness testing device is characterized in that the hemispherical hook claw is connected with the pressure sensor and presses on the spiral spring sealing cover, the stay wire fixing plate is fixedly connected with the sealing cover, one end of the stay wire is connected to the stay wire fixing plate, the other end of the stay wire is connected to the displacement sensor, the execution screw drives the pressing plate to move downwards, the sum of the pressures of the four pressure sensors is recorded as sigma-F, the displacement of the spiral spring measured by the displacement sensor is x, and the sum of the pressures of the pressure sensors obtained by the ith loading is sigma-F_iThe displacement of the coil spring at the i-th loading is denoted as x_iAnd after the ith (i is more than or equal to 2) loading, the static stiffness of the obtained spiral spring is K_i＝(∑F_i-∑F_i-1)/(x_i-x_i-1) After averaging, the static stiffness of the coil spring is

The spring dismounting and static stiffness testing device has the advantages that: the assembly device has the advantages that the assembly device can be disassembled, assembled and tested for static stiffness under the condition that the connection of all parts is reliable, the disassembling difficulty is reduced, the use safety of assembling personnel is guaranteed, and the assembly of the spiral spring and the shock absorber and the testing for static stiffness are more convenient.

Drawings

Fig. 1 is a front view showing a state in which a coil spring according to an embodiment of the present invention is detached.

Fig. 2 is a side view showing the above embodiment of the present invention.

Fig. 3 is a plan view showing the above embodiment of the present invention.

Fig. 4 is a front view showing a static stiffness test state of a coil spring according to an embodiment of the present invention.

Fig. 5 is a side view showing a static stiffness test state of a coil spring according to an embodiment of the present invention.

Fig. 6 is a plan view showing a static stiffness test state of a coil spring according to an embodiment of the present invention.

Fig. 7 is an isometric view of the fixed clamp block.

Description of the reference numerals

1. The device comprises a horizontal bottom plate, 2, a lateral bottom plate, 3, a middle fixing seat, 4, a fixing clamping block, 5, a lateral upper plate, 6, a left vertical plate, 7, a right vertical plate, 8, a fixing rod, 9, a guide rod, 10, an execution screw rod, 11, a clamping block base, 12, a clamping block, 13, a claw, 14, a handle, 15, a pressing plate, 16, a horizontal upper plate, 17, a linear bearing, 18, a deep groove ball bearing, 19, a pivot, 20, a displacement sensor, 21, a stay wire, 22, a stay wire fixing plate, 23, a hemispherical claw, 24, a pressure sensor, 25, a sealing cover, 201, a V-shaped opening, 301, a long groove, 401, a V-shaped groove, 1501, a threaded hole, 1502 and a long groove.

Detailed Description

The following detailed description will be made on a spring assembling and disassembling and static stiffness testing device according to the present invention with reference to fig. 1 to 7.

As shown in fig. 1 to 7, a spring dismounting and static stiffness testing device comprises a frame, a fixing mechanism, a clamping mechanism, a loading and guiding mechanism and a testing mechanism, wherein the frame comprises a horizontal bottom plate 1, a lateral bottom plate 2, a lateral upper plate 5, a horizontal upper plate 16, a left vertical plate 6 and a right vertical plate 7, the fixing mechanism comprises a middle fixing seat 3, a fixed clamping block 4 and a fixing rod 8, the clamping mechanism comprises a clamping block base 11, a clamping block 12, a claw 13 and a pivot 19, the loading and guiding mechanism comprises a guiding rod 9, an execution screw rod 10, a pressing plate 15 and a handle 14, the execution screw rod comprises two identical pieces, the clamping block base 11, the clamping block 12, the claw 13 and the guiding rod 9 respectively comprise four pieces, and the four identical pieces are symmetrical about the middle plane of the middle fixing seat 3.

As shown in fig. 1 to 7, a horizontal bottom plate 1 on the left side is connected with a lateral bottom plate 2 through a bolt, the lateral bottom plate 2 is connected with a left vertical plate 6 through a bolt, the left vertical plate 6 is connected with a lateral upper plate 5 through a bolt, and the connection of the lateral bottom plate, the vertical plate and the lateral upper plate on the right side is the same as that of the lateral bottom plate, the vertical plate and the lateral upper plate; the middle fixing seat 3 is fixed on the lateral bottom plate 2, an elongated slot 301 is formed in the middle fixing seat 3, the two fixing clamping blocks 4 clamp the spiral spring shock absorber assembly, the positions of the fixing clamping blocks 4 on the middle fixing seat 3 can be adjusted along the elongated slot 301 of the middle fixing seat 3 and are fixed on the middle fixing seat 3 through bolts, the guide rod 9 is connected with the horizontal bottom plate 1, the linear bearing 17 and the horizontal upper plate 16, the linear bearing 17 is fixed with the pressing plate 15, the handle 14 penetrates through a light hole in the upper portion of the execution screw rod 10, and the execution screw rod 10 penetrates through an inner hole of the deep groove ball bearing 18 and a threaded hole 1501 in the middle of the pressing plate 15 and is connected with the horizontal upper plate 16 and the horizontal bottom plate 1. A clamping block base 11 in the clamping mechanism is fixed on a pressing plate 15, a clamping block 12 is fixedly connected with the clamping block base 11, a hook claw 13 is positioned on a pivot 19 of the clamping block 12, the axis of a central hole at the left end of the hook claw 13 is collinear with the central line of the pivot 19, four hook claws 13 hook a coil spring in four different directions of the coil spring, and the hook claw 13 can freely rotate around the pivot 19, so that the hook claw 13 is always kept in close contact with the coil spring in the compression process of the coil spring, and partial contact points are prevented from being acted by force.

As shown in fig. 1 to 7, a lateral bottom plate 2 of the fixing mechanism is provided with a V-shaped opening 201, the side surface of each fixed clamping block 4 is provided with a V-shaped groove 401, two fixed clamping blocks 4 are connected by bolts, the V-shaped groove 401 of each fixed clamping block 4 clamps the lower end of the coil spring damper, and the fixed clamping blocks are connected with a middle fixed seat 3 provided with an elongated slot 301 through a through hole on the bottom surface of each fixed clamping block 4.

As shown in fig. 1 to 7, the clamping block base 11 of the clamping mechanism can move along the elongated slot 1502 of the pressing plate 15, the clamping block 12 can rotate relatively on the clamping block base 11, the pivot 19 is installed on the clamping block 12, the hook 13 can rotate around the pivot 19, and the other end of the hook 13 is hooked on the coil spring.

As shown in fig. 1 to 7, the execution screw 10 is fixed on the horizontal bottom plate 1 and the horizontal upper plate 16 through the deep groove ball bearing 18, the execution screw 10 is matched with the threaded hole 1501 of the pressing plate 15, and the assembly tolerance of the bearing mounting holes of the horizontal bottom plate 1 and the horizontal upper plate 16 is as followsThe tolerance of the shafts at the two ends of the execution screw is

As shown in fig. 4 to 6, the inner circumferential surface of the hemispherical claw 23 is hemispherical, the upper portion of the pressure sensor 24 is hemispherical, the lower portion is square, and the radius of the hemisphere of the pressure sensor 24 is equal to the radius of the inner circumferential surface of the claw 23.

A spring dismouting and quiet rigidity testing arrangement, spring dismouting working process as follows: the fixed clamping block 4 clamps the lower part of the spiral spring shock absorber and is connected to the frame through the middle fixed seat 3, the position of the clamping block base 11 is adjusted, the azimuth angle of the clamping block 12 is adjusted, the hook claw 13 is lapped on the assembled spiral spring and is in a free lapping state, the handle 14 is rotated to drive the execution screw rod 10 to rotate, the pressing plate 15 moves downwards to drive the clamping block base 11 and the clamping block 12 to move downwards, the hook claw 13 is further driven to tightly clamp the spring, the spiral spring is compressed along with the continuous rotation of the handle 14, the sealing cover 25 at the upper end of the spiral spring is taken out, the handle 14 is rotated reversely to restore the spring to the free state, and the spiral spring can be taken out; when the spiral spring is installed, the process is opposite, the spiral spring is driven by the execution screw rod 10 to generate a larger compression amount, the sealing cover 25 at the upper end of the spiral spring is put in, the handle 14 is rotated reversely, the spiral spring is restored to a pre-tightening state, and the assembly of the spiral spring and the shock absorber is completed.

A spring dismouting and static rigidity testing arrangement, the process of coil spring static rigidity test is as follows: the hemispherical claw 23 is connected with a pressure sensor 24 and pressed on a spiral spring sealing cover 25, a stay wire fixing plate 22 is fixedly connected with the sealing cover 25, one end of a stay wire 21 is connected to the stay wire fixing plate 22, the other end of the stay wire is connected to a displacement sensor 20, an execution screw 10 drives a pressing plate 15 to move downwards, the pressure sensor 24 measures to obtain vertical pressure on the sealing cover 25, the displacement sensor 20 measures to obtain displacement of the spiral spring, and the numerical value obtained by dividing continuously measured pressure difference by the displacement difference is averaged to obtain the static stiffness of the spiral spring.

Modifications of the embodiments

The present invention is not limited to the above-described embodiments, and variations and modifications within the scope of the object of the present invention can be achieved.