CN112975352A - Piston valve mounting device of shock absorber - Google Patents
Piston valve mounting device of shock absorber Download PDFInfo
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- CN112975352A CN112975352A CN201911272085.8A CN201911272085A CN112975352A CN 112975352 A CN112975352 A CN 112975352A CN 201911272085 A CN201911272085 A CN 201911272085A CN 112975352 A CN112975352 A CN 112975352A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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Abstract
The embodiment of the application provides a shock absorber piston valve installation device, includes: the clamping assembly is used for clamping a piston valve, and an unthreading thread fastening sleeve is pre-installed on the piston valve; the rotating assembly is connected with the clamping assembly and is used for driving the clamping assembly to rotate in a vertical plane; a screw fastening assembly for performing a tightening operation on the screw fastening kit from one side of the piston valve; and the spring compression force detection assembly is used for detecting the compression force value of the spring in the threaded fastening sleeve from the other side of the piston valve. The shock absorber piston valve installation device that this application embodiment provided can realize carrying out automatic assembly and power value to the piston valve and detect to carry out the secondary assembly according to the testing result, improve the yield.
Description
Technical Field
The application relates to a shock absorber installation technology, in particular to a shock absorber piston valve installation device.
Background
The shock absorber is an important part in a railway vehicle, is used for reducing the vibration of a vehicle body, improves the riding comfort, and can also reduce the rigid acting force among all parts in a bogie and prolong the service life of the parts. The oil pressure vibration absorber is a vibration absorber with high application rate, and comprises a dust cover, an outer barrel, an inner barrel and a piston assembly, wherein the piston assembly is inserted into the inner barrel, the inner barrel is arranged in the outer barrel, the dust cover is covered at the opening of the outer barrel, and the axial movement of the piston assembly is obstructed by the pressure of hydraulic oil filled in the inner barrel to achieve the vibration absorbing effect.
The assembly process of the traditional shock absorber is manually completed by indirectly controlling the spring pressure, such as: the assembly mode of a piston valve in the piston assembly is as follows: an operator places the valve body on a fixing tool, then places the bolts, the valve plates, the springs and other components in the mounting holes in sequence, manually operates the torque screwdriver to tighten the bolts, and indirectly controls the compression force of the springs by controlling the torque (or recording the number of tightening turns of the bolts). The fastening force precision of the bolt is generally greatly influenced by operators, and due to the slight difference of thread size and surface roughness, the precision of the compression force of the spring is indirectly controlled through torsion or the number of screwing turns, so that the requirement may not be met, and accidents such as failure of the shock absorber due to the parameter deviation of the damping force exceeding the limit can occur in the using process of the shock absorber.
Disclosure of Invention
In order to solve one of the technical defects, the embodiment of the application provides a piston valve mounting device of a shock absorber.
An embodiment of a first aspect of the present application provides a shock absorber piston valve mounting arrangement comprising:
the clamping assembly is used for clamping a piston valve, and an unthreading thread fastening sleeve is pre-installed on the piston valve;
the rotating assembly is connected with the clamping assembly and is used for driving the clamping assembly to rotate in a vertical plane;
a screw fastening assembly for performing a tightening operation on the screw fastening kit from one side of the piston valve;
and the spring compression force detection assembly is used for detecting the compression force value of the spring in the threaded fastening sleeve from the other side of the piston valve.
According to the technical scheme provided by the embodiment of the application, the piston valve is clamped by the clamping assembly, the threaded fastening assembly screws up the threaded fastening sleeve pre-installed on the piston valve, the spring compression force detection assembly detects the spring compression force value of the screwed threaded fastening sleeve, and when the spring compression force value does not reach the preset force value, the threaded fastening sleeve is screwed up again by the threaded fastening assembly until the preset force value is reached; in addition, the clamping assembly is driven to rotate by the rotating assembly, so that the piston valve is driven to overturn up and down, two groups of thread fastening kits assembled from two end faces of the piston valve are fixed by adopting the mode, automatic assembly of the piston valve is realized, the spring compression force value of the thread fastening kits can be detected, the piston valve is screwed down again according to the detection result until the requirement of the spring compression force value is met, and the assembly reliability and the finished product quality are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic structural view of a shock absorber piston valve mounting arrangement provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a clamp assembly, a rotating assembly and a pre-installation workbench in a shock absorber piston valve installation apparatus provided by an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a threaded fastener assembly in a shock absorber piston valve mounting apparatus provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a configuration of a damper piston valve provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a spring compression force detection assembly in a shock absorber piston valve mounting device provided in an embodiment of the present application.
Reference numerals:
1-a clamping assembly; 11-a clamping cylinder; 12-a gripper gas claw;
2-a threaded fastening assembly; 21-a first fixed seat; 22-a second fixed seat; 23-a third fixed seat; 24-a first mount driver; 25-a second mount driver; 26-a third mount driver; 27-fastening assembly holder; 28-a first screw gun; 29-a second screw gun; 210-a top post;
3-a spring compression force detection assembly; 31-detecting the fixing frame; 32-detecting the driving motor; 33-a detection rod; 34-a pressure sensor; 351-fixed beam; 352-a fixing plate; 353, an adjusting plate; 354-fixed plate driver; 355-an adjustment plate driver;
4-a working bench;
51-pre-mount table; 52-horizontal driving cylinder; 53-a drive rod; 54-a proximity switch;
61-a rotary cylinder;
7-a piston valve; 71-piston screw; 72-piston valve plate; 73-a coil spring; 74-adjusting nut; 75-locknut.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present embodiment provides a mounting arrangement for a damper piston valve for assembling the damper piston valve. The mounting device is suitable for the process of newly producing the shock absorber and also suitable for the process of repairing and reassembling the shock absorber.
Fig. 1 is a schematic structural diagram of a shock absorber piston valve mounting device provided in an embodiment of the present application. As shown in fig. 1, the present embodiment provides a piston valve mounting device for a shock absorber, comprising: the device comprises a clamping assembly 1, a threaded fastening assembly 2, a spring compression force detection assembly 3 and a rotating assembly.
Wherein, centre gripping subassembly 1 is used for the centre gripping piston valve, and the threaded fastening external member that does not screw up is installed in advance on the piston valve. The threaded fastening kit is a part to be assembled to the piston valve and may include: screws, valve plates, springs, nuts, etc., pre-mounting these components to the piston valve.
The threaded fastening assembly 2 is used to perform a tightening operation, such as a screw and nut tightening, on the threaded fastening kit from one side of the piston valve.
The spring compression force detection assembly 3 is used for detecting the spring compression force value of the screw fastening sleeve from the other side of the piston valve. And when the detected spring compression force value does not reach the preset force value, controlling the thread fastening assembly 2 to perform the screwing operation on the detected thread fastening suite again according to the deviation between the detected spring compression force value and the preset force value.
The above components can be fixed on the work bench 4. For example, in the structure shown in fig. 1, a worktable is arranged in the middle of a worktable frame 4, and a clamping assembly 1, a thread fastening assembly 2, a spring compression force detection assembly 3 and a rotating assembly are all arranged on the worktable. The piston valve is a cylindrical structure with the diameter larger than the height, and the threaded fastening components 2 are assembled perpendicular to two axial end faces of the piston valve. Generally, the piston valve is assembled with its axial end faces facing in the up-down direction, and the screw tightening unit 2 and the spring compression force detection unit 3 are located at the upper and lower sides of the piston valve, respectively. For example: the threaded fastening assembly 2 is arranged above the clamping assembly 1, and the spring compression force detection assembly 3 is arranged below the clamping assembly 1.
The rotating assembly is connected with the clamping assembly 1 and is used for driving the clamping assembly 1 to rotate in a vertical plane. The screw fastening kit on the piston valve comprises an upper group and a lower group, wherein the screw of the upper group is installed downwards, and the screw of the lower group is installed upwards. Therefore, in the process of assembling the piston valve, one group of the screw fastening sets is firstly screwed down through the screw fastening assemblies 2, then the clamping assemblies 1 are driven to overturn through the rotating assemblies so that the upper surface and the lower surface of the piston valve are interchanged, and then the other group of the screw fastening sets is screwed down through the screw fastening assemblies 2, so that the assembling of the piston valve is completed.
According to the technical scheme provided by the embodiment, the piston valve is clamped by the clamping assembly, the threaded fastening assembly screws a pre-installed threaded fastening sleeve on the piston valve, the spring compression force detection assembly detects the spring compression force value of the screwed threaded fastening sleeve, and when the spring compression force value does not reach the preset force value, the threaded fastening sleeve is screwed again by the threaded fastening assembly until the preset force value is reached; in addition, the clamping assembly is driven to rotate by the rotating assembly, so that the piston valve is driven to overturn up and down, two groups of thread fastening kits assembled from two end faces of the piston valve are fixed by adopting the mode, automatic assembly of the piston valve is realized, the spring compression force value of the thread fastening kits can be detected, the piston valve is screwed down again according to the detection result until the requirement of the preset force value is met, and the assembly reliability and the finished product quality are improved.
The pre-installation process of the thread fastening kit can be manually completed by an operator, and parts such as a screw rod and the like are placed at the installation position arranged on the piston valve. After the pre-installation is completed, an operator places the piston valve into the clamping area of the clamping assembly 1 and operates the clamping assembly 1 to clamp the piston valve tightly.
Alternatively, the mounting device may further include: a pre-mount table 51 and a horizontal drive assembly, both disposed on the table. When the pre-installation of the piston valve is completed, the operator places the piston valve on the pre-installation table 51. A pre-installation table 51 is located on the right side of the clamping assembly 1 for carrying the piston valve. The horizontal driving assembly is connected to the pre-mounting table 51 and is used for driving the pre-mounting table 51 to move horizontally, for example: and moving leftwards until the piston valve reaches the clamping area of the clamping assembly 1, so that the piston valve is automatically installed on the clamping assembly.
On the basis of the technical scheme, the embodiment provides a concrete implementation mode of the shock absorber piston valve mounting device. In the following, the left-right direction, the front-back direction, and the up-down direction are defined by taking the angle of view of fig. 1 as an example.
First, the pre-installation, horizontal movement and rotation processes of the piston valve will be described in detail. Fig. 2 is a schematic structural diagram of a clamping assembly, a rotating assembly and a pre-installation workbench in a shock absorber piston valve installation device provided by an embodiment of the application. As shown in fig. 2, the rotating assembly includes: a rotary cylinder 61 and a rotary shaft. The rotary cylinder 61 is fixed to the table. One end of the rotating shaft is connected with the rotating cylinder 61, and the other end is connected with the clamping assembly 1.
The clamping assembly 1 comprises: a clamping cylinder 11 and a clamping gas claw 12. Wherein, the number of the clamping gas claws 12 is two, the clamping gas claws are arranged side by side, and a certain distance is reserved between the clamping gas claws and the two. The opposite surfaces of the two clamping gas claws 12 are provided with arc concave surfaces, the curvature radius is consistent with that of the circumferential surface of the piston valve 7, and the area between the two clamping gas claws 12 is a clamping area. The clamping cylinder 11 is connected with the two clamping air claws 12 and is used for driving the two clamping air claws 12 to move relatively, and when the two clamping air claws 12 approach each other, the piston valve 7 is clamped. When the friction force generated by the radial clamping force applied by the two clamping air claws 12 to the piston valve 7 is larger than the gravity of the piston valve 7, the piston valve 7 cannot fall off. When the two gripper jaws 12 are moved away from each other and no radial clamping force is applied to the piston valve 7, the piston valve 7 will fall under gravity onto the lower pre-mounted table.
The rotary cylinder 61 drives the clamping cylinder 11 to rotate through the rotating shaft, and then drives the piston valve 7 to rotate through the clamping air claw 12, and the piston valve is turned over up and down.
The pre-mount table 51 is provided on the right side of the gripper gas claw 12 and supports the piston valve 7. A slide rail extending in the left-right direction is provided on the table, and a slide groove structure engaged with the slide rail is provided at the bottom of the pre-mount table 51 so that the pre-mount table 51 can slide along the slide rail.
The horizontal driving assembly includes: a horizontal driving cylinder 52 and a driving rod 53 having one end inserted in the horizontal driving cylinder 52, and the outer end of the driving rod 53 is connected to the pre-mounting table 51. The horizontal driving cylinder 52 can drive the pre-mounting table 51 to slide relative to the slide rail through the driving rod 53.
The workbench is further provided with two proximity switches 54, which are arranged on one side of the clamping air claw 12 facing the installation workbench 51 and are respectively positioned on two sides of the pre-installation workbench 51 moving to the target position, and are used for detecting whether the pre-installation workbench 51 moves in place.
Fig. 3 is a schematic structural diagram of a threaded fastening assembly in a shock absorber piston valve mounting device provided in an embodiment of the present application. As shown in fig. 1 and 3, a screw tightening assembly 2 is provided at the left end of the table above the clamping assembly 1. The threaded fastening assembly 2 comprises a fastening assembly mount, a screw gun and a mount drive kit. Wherein, the screw rifle sets up on the fastening components work frame, and the working end of screw rifle is down. The screw gun can adopt a tool which is commonly used in the field and used for screwing a screw rod or a nut, and can be an electric tool or a pneumatic tool. The working end of the screw gun refers to the end intended to be in contact with the screw or nut.
The fixing frame driving external member is arranged on the workbench, is connected with the fastening assembly fixing frame and is used for driving the fastening assembly fixing frame to move up and down, and moves downwards to reach the position of the threaded fastening external member at the working end of the screw gun so as to be used for screwing the threaded fastening external member.
Fig. 4 is a schematic structural diagram of a piston valve of a shock absorber according to an embodiment of the present application. As shown in fig. 4, the present embodiment provides a structure of a piston valve and a screw fastening kit. Six sets of threaded fastener assemblies are mounted on the piston valve, only three sets of threaded fastener assemblies being shown in fig. 4. Each of the six sets of threaded fastener assemblies includes: the piston screw 71, and a piston valve plate 72, a coil spring 73, an adjusting nut 74 and a locknut 75 which are sequentially sleeved on the piston screw 71. For one set of threaded fastening assemblies, the piston screw 71 and piston plate 72 are located on one side of the piston valve, and the coil spring 73, adjusting nut 74 and locknut 75 are assembled on the other side of the piston valve. For six sets of threaded fastening sets, three sets are installed in the opposite direction to the other three sets, for example: of which the piston screws 71 in three groups are fitted from above the piston valve 7 and the piston screws 71 in the other three groups are fitted from below the piston valve 7.
Specifically, mount drive external member includes: a first fixed seat 21, a second fixed seat 22, a third fixed seat 23, a first fixed seat driver 24, a second fixed seat driver 25, and a third fixed seat driver 26. Wherein, first fixing base 21 is fixed on the workstation, and its top is equipped with the first guide rail along horizontal first direction extension. In this embodiment, the horizontal first direction is the left-right direction of the table. The bottom of second fixing base 22 is equipped with the spout structure with first guide rail complex, and first fixing base driver 24 links to each other with second fixing base 22 for drive second fixing base 22 slides along first guide rail, also moves along the left and right directions of workstation.
The right side surface of the second fixing seat 22 is provided with a second guide rail extending along a horizontal second direction, and the horizontal second direction is perpendicular to the horizontal first direction, that is, the horizontal second direction is the front-back direction of the workbench. The left side surface of the third fixing seat 23 is provided with a sliding groove structure used for being matched with the second guide rail. The second fixed seat driver 25 is connected to the third fixed seat 23, and is configured to drive the third fixed seat 23 to slide along the second guide rail, that is, to move along the front-back direction of the workbench.
The right side surface of the third fixing seat 23 is provided with a third guide rail extending in the up-down direction (i.e., the vertical direction). The third fixing frame driver 26 is disposed on the third fixing frame 23 and connected to the fastening assembly fixing frame 27, and is configured to drive the fastening assembly fixing frame 27 to move up and down along the third guide rail.
The number of the screw guns is two, respectively, the first screw gun 28 for tightening the adjusting nut 74 and the second screw gun 29 for tightening the locknut 75. The first screw gun 28 and the second screw gun 29 are arranged at intervals in the front-rear direction on the fastening-assembly holder 27.
In addition, a top pillar 210 is further provided on the fastening assembly holder 27, specifically, at the bottom of the fastening assembly holder 27, between the first screw gun 28 and the second screw gun 29. When the spring compression force detection assembly 3 detects the spring compression force value, the top pillar 210 abuts against the piston valve 7 from above to keep the piston valve 7 stationary.
The first fixing seat driver 24 and the second fixing seat driver 25 are specifically driving electric cylinders, and drive the corresponding fixing seats to move through electric power. The third fixing seat driver 26 is specifically a driving cylinder, and drives the fastening assembly fixing frame 27 to move under the pressure action of working gas.
The threaded fastening component 2 is not limited to the above-mentioned solution provided in this embodiment, and may also be implemented in other manners, which is not limited in this embodiment.
Fig. 5 is a schematic structural diagram of a spring compression force detection assembly in a shock absorber piston valve mounting device provided in an embodiment of the present application. As shown in fig. 1 and 5, the spring compression force detection assembly 3 is disposed below the table, specifically, below the chucking assembly 1. The spring compression force detection assembly 3 includes: the device comprises a detection fixing frame 31, a detection driving motor 32, a detection rod 33, a pressure sensor 34 and a detection fixing frame driving kit.
Wherein, detect the mount drive external member and set up in the below of workstation, link to each other with detecting mount 31 for the drive detects mount 31 and removes. The detection driving motor 32 is disposed on the detection fixing frame 31, and an output end thereof is connected to the detection rod 33 for driving the detection rod 33 to move vertically. The detection rod 33 extends in the vertical direction, and the detection rod 33 moves upward to apply an upward urging force to the piston screw 71, causing the coil spring 73 to compress. The pressure sensor 34 is disposed on the detection rod 33 and detects a vertical force applied to the detection rod 33. After the coil spring 73 is compressed, its generated elastic force is transmitted downward through the detection lever 33 and detected by the pressure sensor 34. The pressure sensor 34 can send the detected data to the controller, and the controller can determine whether the data reaches a preset force value, and if the data does not reach the preset force value, the first screw gun 28 is controlled to perform the tightening operation again, and the tightening stroke can be calculated according to the difference between the detected compression force value and the preset force value. To take a simple example: if the data detected by the pressure sensor indicates a travel which differs by 360 ° from the predetermined value, the first screw gun 28 is controlled to tighten the adjusting nut 74 by 360 °.
Detect mount drive external member and specifically include: fixed beam 351, fixed plate 352, adjustment plate 353, fixed plate driver 354, adjustment plate driver 355, and a mount driver (not shown). The fixed beam 351 is fixed on the bottom surface of the workbench, and the bottom of the fixed beam is provided with a first sliding rail extending along a horizontal first direction (namely, a left-right direction).
The top surface of the fixing plate 352 is provided with a sliding groove structure for matching with the first sliding rail. The fixed plate 352 is connected to a fixed plate driver 354, the fixed plate driver 354 is used for driving the fixed plate 351 to move along a first sliding rail, that is: moving in the left-right direction.
The right side surface of the fixed plate 352 is provided with a second slide rail extending in a horizontal second direction (i.e., a front-rear direction). The left side of the adjusting plate 353 is provided with a sliding groove structure matched with the second sliding rail. The adjusting plate driver 355 is connected to the adjusting plate 353 for driving the adjusting plate 353 to move along the second slide rail, that is: moving in the front-to-back direction.
The right side surface of the adjusting plate 353 is provided with a third slide rail extending in the vertical direction. The left side surface of the detection fixing frame 31 is provided with a sliding chute structure used for being matched with a third sliding rail. The mount driver links to each other with detecting mount 31 for control detects mount 31 and removes along the third slide rail, promptly: moving in the vertical direction.
A detection driving motor 32 is provided on the detection mount 31 for driving the detection lever 33 to move up or down. During the upward movement, an upward axial pushing force is applied to the end of the piston screw 71, causing the coil spring 73 to compress. The compression force of the coil spring 73 can be transmitted to the pressure sensor 34 through the piston screw 71 to be detected.
The fixed plate driver 354, the adjustment plate driver 355, and the fixed frame driver are all electric drivers.
The spring compression force detecting assembly 3 is not limited to the above-mentioned solution provided in this embodiment, and may be implemented in other manners, which is not limited in this embodiment.
The assembly process of the piston valve mounting device of the shock absorber comprises the following steps: an operator places the piston valve to be assembled on the pre-installation workbench 51, inserts the parts in the threaded fastening kit into the assembly hole of the piston valve in sequence, and slightly screws the adjusting nut 74 and the locknut 75 so as not to loosen. The pre-mount table 51 is then moved to the left between the two gripper gas jaws 12 by the horizontally actuated cylinder 52 by depressing the button, and the gripper cylinder 11 is actuated to cause the two gripper gas jaws 12 to clamp the piston valve 7 inwardly. The upper screw tightening assembly 2 is moved above the piston valve 7 and is sequentially moved to the position of the three screw tightening sets, and the adjusting nut 74 and the locknut 75 are tightened. Thereafter, the lower spring compression force detection assembly 3 moves below the piston valve 7, and sequentially detects the pressing force of the three piston screws 71. And if the pressure value of the external member does not reach the preset pressure value, controlling the threaded fastening assembly 2 to move above the corresponding external member to perform secondary screwing according to the deviation value between the pressure value and the preset pressure value. After the three screw fastening kits above are fixed, the rotary cylinder 61 drives the clamping air claw 12 to rotate, the piston valve 7 is turned to the other side to be upward, and the other three screw fastening kits are screwed, detected and screwed according to the same steps. After the six sets of the thread fastening kits are assembled, the clamping cylinder 11 cancels the driving force to the clamping air claws 12, the two clamping air claws 12 loosen the piston valve 7, and the piston valve 7 falls on the pre-installation workbench 51 under the action of gravity. Then the horizontal driving cylinder 52 drives the pre-installation workbench 51 to move rightwards to the initial position, and the assembly of the piston valve is completed
In the conventional scheme, two tightening methods are adopted for the piston screw 71, the first method is a torque indirect control method, a fixed torque value is applied to the piston screw 71 through a torque wrench, and the compression force parameter of the spiral spring 73 is indirectly controlled on the assumption that the thread friction coefficient is constant. Specifically, if the spring compression force is F1, the spring rate is K1, and the amount of change in the compressed spring length is x, F1 is K1 · x. The torque value applied to the piston screw 71 is set to be F2, the fastening torque coefficient of the screw thread and the nut of the piston screw 71 is set to be K2, the tensile force applied to the piston screw 71 is equal to the spring compression force F1, F2 is equal to F1. K2, and the spring compression force F1 needing to be controlled can be obtained by applying a constant torque value F2 to the piston screw 71 under the condition that the fastening torque coefficient K2 of the screw thread and the nut of the piston screw 71 is a constant value. The above scheme is satisfied under the condition that the fastening torque coefficient K2 at the bolt thread and the nut is a constant value, but in the actual situation, due to certain slight differences of the external dimensions, the surface roughness, the cleanliness and the like of the workpiece contact surfaces such as the bolt cap, the nut, the thread, the piston valve body and the like, the fastening torque coefficient K2 has slight deviation, namely, by applying a constant torque value F2 to the bolt, the spring compression force F1 required to be controlled may have slight deviation, and due to high assembly precision requirements, the damping force test of the shock absorber may be finally unqualified.
The second is an indirect angle control method, which rotates the screw to a fixed angle value by screwing from a same starting point. And the compression force parameter of the spring is indirectly controlled by assuming that the thread pitch has a certain shape and the compressed variable quantity of the length of the spring is also a fixed value. The compression forces of the springs arranged from the front surface and the back surface of the piston valve are different, and the springs are required to be screwed at 780 degrees and 840 degrees respectively. A prerequisite for the implementation of this embodiment is that the starting point for the screw rotation tightening is that the spring has just started to be compressed, but the spring length is still an uncompressed length. If the compression force of the spring is F1, the spring elastic coefficient is K1, and the compressed variation of the spring length is x, F1 is K1 · x, and the compressed variation x of the spring length is the displacement of the nut on the screw rod after the nut rotates a certain angle. However, the starting point and the rotation angle of the screw for rotating and tightening are manually operated and controlled, so that deviation is easy to occur in the batch production process. Due to the high requirement on assembly precision, the damping force test of the shock absorber can be unqualified finally.
And the scheme that this embodiment provided, through the automatic nut of screwing up of the screw fastening subassembly 2 that can carry out the triaxial motion, assemble the piston valve, but also can detect spring compression power through the spring compression power detection assembly 3 that can carry out the triaxial motion, carry out the secondary when compressive power does not reach the requirement and screw up, realize direct detection and accurate control to coil spring compressive power to improve the qualification rate of piston valve. And through the mode of automated inspection spring compression force, can improve the accuracy of detection data, reduce the error that the human factor leads to. The installation device that this embodiment provided, operating personnel only need carry out preinstallation to the screw fastening external member, and later operation all can be through each subassembly automatic execution, has reduced operating personnel's work load, improves production efficiency.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A shock absorber piston valve mounting apparatus comprising:
the clamping assembly is used for clamping a piston valve, and an unthreading thread fastening sleeve is pre-installed on the piston valve;
the rotating assembly is connected with the clamping assembly and is used for driving the clamping assembly to rotate in a vertical plane;
a screw fastening assembly for performing a tightening operation on the screw fastening kit from one side of the piston valve;
and the spring compression force detection assembly is used for detecting the compression force value of the spring in the threaded fastening sleeve from the other side of the piston valve.
2. The shock absorber piston valve mounting arrangement as set forth in claim 1, further including:
the pre-installation workbench is used for bearing the piston valve when the threaded fastening sleeve is pre-installed;
and the horizontal driving assembly is connected with the pre-installation workbench and is used for driving the pre-installation workbench to horizontally move until the piston valve reaches the clamping area of the clamping assembly.
3. The shock absorber piston valve mounting arrangement as set forth in claim 2, wherein said threaded fastener assembly includes:
a fastening assembly holder;
the screw gun is arranged on the fastening component fixing frame; the working end of the screw gun faces downwards;
and the fixing frame driving external member is connected with the fastening assembly fixing frame and used for driving the fastening assembly fixing frame to move until the working end of the screw gun reaches the position of the thread fastening external member.
4. The shock absorber piston valve mounting arrangement as set forth in claim 3, wherein the threaded fastening kit includes: the piston screw rod, and a piston valve plate, a spiral spring, an adjusting nut and a locknut which are sequentially sleeved on the piston screw rod;
the screw gun includes: a first screw gun for tightening the adjusting nut and a second screw gun for tightening the locknut.
5. The shock absorber piston valve mounting apparatus as claimed in claim 3 or 4, wherein a top post is further provided on said fastening assembly holder for abutting against the piston valve from above when the spring compression force detecting assembly detects the spring compression force value.
6. The shock absorber piston valve mounting arrangement of claim 3 wherein said mount drive assembly comprises:
the top of the first fixed seat is provided with a first guide rail extending along a horizontal first direction;
a second fixed seat; the second fixed seat is provided with a second guide rail extending along a horizontal second direction; the horizontal second direction is vertical to the horizontal first direction;
a third fixed seat; the third fixed seat is provided with a third guide rail extending along the vertical direction;
the first fixed seat driver is connected with the second fixed seat and used for driving the second fixed seat to move along the first guide rail;
the second fixed seat driver is connected with the third fixed seat and used for driving the third fixed seat to move along the second guide rail;
and the third fixing seat driver is connected with the fastening component fixing frame and used for driving the fastening component fixing frame to move along the third guide rail.
7. The shock absorber piston valve mounting arrangement as set forth in claim 1, wherein said clamp assembly includes: a clamping cylinder and a clamping gas claw;
the number of the clamping gas claws is two, and the clamping gas claws are arranged side by side; the opposite surfaces of the two clamping gas claws are provided with arc concave surfaces, and the area between the two clamping gas claws is the clamping area;
the clamping cylinder is connected with the two clamping air claws and is used for driving the two clamping air claws to move relatively so as to clamp the piston valve.
8. The shock absorber piston valve mounting arrangement as set forth in claim 7, wherein said rotating assembly includes: a rotary cylinder and a rotary shaft; one end of the rotating shaft is connected with the rotating cylinder, and the other end of the rotating shaft is connected with the clamping cylinder.
9. The shock absorber piston valve mounting arrangement as set forth in claim 1 wherein said spring compression force sensing assembly includes:
detecting the fixing frame;
the detection fixing frame driving external member is connected with the detection fixing frame and used for driving the detection fixing frame to move;
the detection driving motor is arranged on the detection fixing frame;
the detection rod is connected with the output end of the detection driving motor and extends along the vertical direction; the detection driving motor is used for driving the detection rod to vertically move;
and the pressure sensor is arranged on the detection rod and used for detecting the vertical force applied to the detection rod as the compression force of the spring.
10. The shock absorber piston valve mounting arrangement as set forth in claim 1, wherein said test fixture drive kit includes:
the fixed beam is provided with a first sliding rail extending along a horizontal first direction;
the fixing plate is provided with a second sliding rail extending along a horizontal second direction;
an adjusting plate; a third slide rail extending vertically is arranged on the first slide rail;
the fixed plate driver is connected with the fixed plate and used for driving the fixed plate to move along the first sliding rail;
the adjusting plate driver is connected with the adjusting plate and used for driving the adjusting plate to slide along the second slide rail;
and the fixing frame driver is connected with the detection fixing frame and used for driving the detection fixing frame to move along the third sliding rail.
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| CN201911272085.8A CN112975352B (en) | 2019-12-12 | 2019-12-12 | Piston valve mounting device of shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911272085.8A CN112975352B (en) | 2019-12-12 | 2019-12-12 | Piston valve mounting device of shock absorber |
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| CN112975352B CN112975352B (en) | 2022-08-30 |
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| CN115816037A (en) * | 2023-01-29 | 2023-03-21 | 中国原子能科学研究院 | Automatic screwing and disassembling device for internal pressure test sample |
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| CN112975352B (en) | 2022-08-30 |
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