Automobile hydraulic cylinder piston rod clamp

Abstract

The utility model relates to the technical field of piston rod auxiliary machining equipment, and provides an automobile hydraulic cylinder piston rod clamp which comprises a bottom plate, a clamping plane positioning and supporting mechanism, an outer circle face positioning and supporting mechanism and a pressing mechanism, and the clamping plane positioning and supporting mechanism, the outer circle face positioning and supporting mechanism and the pressing mechanism are installed on the bottom plate. The clamping plane positioning mechanism comprises a supporting seat which is vertically arranged in a floating manner through a first spring and can lock and limit the height through a locking bolt; a pair of outer circular surface positioning and supporting mechanisms are arranged and are distributed at intervals, each outer circular surface positioning and supporting mechanism comprises a V-shaped supporting block, buffer blocks which are vertically arranged in a lifting mode through lifting air cylinders are installed on the two inner side walls of each V-shaped supporting block, inclined planes parallel to the inner side walls of the V-shaped supporting blocks are formed on the buffer blocks, and rotating pin rollers are distributed on the inclined planes at intervals; the pressing mechanism comprises an electric push rod and a pressing block elastically connected to the output end of the electric push rod. The piston rod testing fixture overcomes the defects in the prior art, is reasonable in design and good in universality, and solves the technical problems that existing piston rods of different models are provided with numerous testing fixtures, the cost is high, and the requirement for stacking space is large.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rod auxiliary processing equipment, in particular to a clamp for a piston rod of an automobile hydraulic cylinder. Background Art

[0002] A piston rod of an automobile hydraulic cylinder, the structure of which is as follows Figure 1 As shown, the end of the piston rod P exposed outside the cylinder body needs to be machined with a through hole P2 that passes through the upper and lower clamping planes P1. When machining piston rods of the same type but different sizes, multiple sets of inspection fixtures are required. This results in a large number of inspection fixtures, which is not only costly but also requires a lot of storage space.

[0003] To this end, we propose an automobile hydraulic cylinder piston rod clamp. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a car hydraulic cylinder piston rod clamp, which overcomes the shortcomings of the existing technology, has a reasonable design, good versatility, and solves the technical problem that there are many different types of piston rod matching inspection fixtures, which are not only costly but also require a large amount of stacking space.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An automobile hydraulic cylinder piston rod clamp, characterized by comprising a base plate and a clamping plane positioning support mechanism, an outer cylindrical surface positioning support mechanism and a pressing mechanism mounted on the base plate;

[0009] The clamping plane positioning mechanism includes a support seat that is vertically floatingly arranged by a first spring and can be locked to a limited height by a locking bolt;

[0010] The outer cylindrical surface positioning support mechanism is provided with a pair of spaced-apart members, each comprising a V-shaped support block, on the two inner side walls of which are mounted buffer blocks vertically raised and lowered by a lifting cylinder, the buffer blocks forming an inclined surface parallel to the inner side wall of the V-shaped support block, on which rotating rollers are spaced-apart;

[0011] The pressing mechanism includes an electric push rod and a pressing block elastically connected to the output end of the electric push rod.

[0012] Furthermore, the clamping plane positioning mechanism includes an outer sleeve seat, an inner sleeve and an end cover, the outer sleeve seat is fixed to the base plate, a pair of first guide grooves are opened on the cylinder wall of the outer sleeve seat, and a pair of guide parts are formed on the outer wall of the inner sleeve. The inner sleeve is vertically inserted into the outer sleeve seat, and the guide parts slide and guide with the first guide grooves. The end cover is installed at the open end of the cylinder body of the outer sleeve seat, and the support seat is threadedly connected to the inner sleeve. The first spring is installed in the outer sleeve seat and the upper and lower ends respectively abut against the inner sleeve and the outer sleeve seat.

[0013] Furthermore, the two inner side walls of the V-shaped support block are provided with second guide grooves, the buffer block is installed in the second guide grooves, the bottom of the second guide grooves is provided with a pair of step holes, the bottom of the buffer block is provided with a pair of first guide rods corresponding to the step holes one by one, the first guide rods extend into the step holes and are sleeved with a second spring, one end of the second spring abuts against the bottom surface of the buffer block, and the other end abuts against the step surface of the guide hole.

[0014] Furthermore, a mounting seat is installed at the output end of the electric push rod, and a third guide groove is opened in the mounting seat. The upper part of the pressure block extends upward to form a sliding part, and the sliding part is slidably installed in the third guide groove. The end of the sliding part and the notch of the third guide groove are limited by a concave-convex structure. A pair of second guide rods are provided in the third guide groove, and a third spring is sleeved on the second guide rod and extends into the guide hole at the end of the sliding part. The two ends of the third spring respectively abut the sliding part and the top plate of the third guide groove.

[0015] Furthermore, the pressing block is in an inverted Y shape.

[0016] (3) Beneficial effects

[0017] The automobile hydraulic cylinder piston rod clamp of the utility model has the following beneficial effects when clamping the piston rod: the support seat of the clamping plane positioning support mechanism is adjusted to rise and fall under the action of the first spring so as to be positioned and fitted with the clamping planes of different heights, and the support seat can be subsequently fixed by a locking bolt; the outer cylindrical surface positioning support mechanism adopts a traditional V-shaped support block to position the outer cylindrical surface of the piston rod, and the V-shaped opening of the V-shaped support block can adapt to piston rods of various sizes. At the same time, adjusting the interval between a pair of V-shaped support blocks can adapt to piston rods of different lengths; the electric push rod can adjust the downward pressing stroke of the pressure block to adapt to the height of the outer cylindrical surface of the piston rod; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the piston rod to be punched;

[0019] Figure 2 It is a structural diagram of the utility model;

[0020] Figure 3 This is a structural diagram of the clamping plane positioning support mechanism in the utility model;

[0021] Figure 4 It is a cross-sectional schematic diagram of the cooperation between the clamping plane positioning support mechanism and the piston rod in the utility model;

[0022] Figure 5 It is a cross-sectional schematic diagram of the cooperation between the outer circular surface positioning support mechanism and the piston rod in the utility model;

[0023] Figure 6 for Figure 5 A schematic diagram of the structure after partial enlargement of the middle part;

[0024] Figure 7 It is a cross-sectional schematic diagram of the cooperation between the pressing mechanism and the piston rod in the utility model; Figure 8 for Figure 7 Schematic diagram of the structure after partial enlargement of point B in the middle.

[0025] In the picture:

[0026] P, piston rod;

[0027] P1, clamping plane;

[0028] P2, perforation;

[0029] 1. Clamping plane positioning support mechanism;

[0030] 2. External cylindrical surface positioning support mechanism;

[0031] 3. Clamping mechanism;

[0032] 11. Outer sleeve seat;

[0033] 111. First guide groove;

[0034] 12. End cap;

[0035] 13. Inner sleeve;

[0036] 131, guide part;

[0037] 14. Support seat;

[0038] 15. Locking bolt;

[0039] 16. First spring;

[0040] 21. V-shaped support block;

[0041] 211, second guide groove;

[0042] 22. Buffer block;

[0043] 212, step hole;

[0044] 23. Roller;

[0045] 24. First guide rod;

[0046] 25. Second spring;

[0047] 26. Lifting cylinder;

[0048] 31. Briquetting;

[0049] 32. Mounting seat;

[0050] 321, third guide groove;

[0051] 33. Third spring;

[0052] 34. Second guide rod. DETAILED DESCRIPTION

[0053] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0054] Refer to the attached Figure 2-8 , a clamp for a piston rod of an automobile hydraulic cylinder, comprising a base plate (not shown in the figure) and an end face positioning mechanism mounted on the base plate, a clamping plane positioning support mechanism 1, an outer cylindrical surface positioning support mechanism 2 and a pressing mechanism 3;

[0055] The end surface positioning mechanism, the clamping plane positioning support mechanism 1, and a pair of outer cylindrical surface positioning support mechanisms 2 are sequentially distributed along a straight line;

[0056] The end face positioning mechanism includes a positioning plate (not shown in the figure), which is fixed to the base plate and is used to locate the axial position of the piston rod and fit with the end face of the piston rod;

[0057] The clamping plane positioning mechanism includes a support seat 14 that is vertically floatingly arranged by a first spring 16 and can be locked to a limited height by a locking bolt 15. The support seat 14 is in contact with the clamping plane under the action of the first spring 16;

[0058] The outer cylindrical surface positioning support mechanism 2 includes a V-shaped support block 21, and buffer blocks 22 are installed on the two inner side walls of the V-shaped support block 21, which are vertically lifted and lowered by a lifting cylinder 26. The buffer block 22 is formed with an inclined surface parallel to the inner side wall of the V-shaped support block 21, and rotating rollers 23 are distributed at intervals on the inclined surface. Before the piston rod contacts the inner side wall of the V-shaped support block 21, the buffer block 22 is lifted and contacts the piston rod first. Under the action of the rollers 23, it is convenient for employees to quickly rotate the piston rod until its clamping plane is in contact with the upper end surface of the support seat 14;

[0059] The clamping mechanism 3 includes an electric push rod (not shown in the figure) and a pressure block 31 elastically connected to the output end of the electric push rod. The electric push rod can adjust the downward pressing distance according to the change of the diameter of the piston rod to ensure the versatility of the mechanism, and the elastically connected pressure block 31 can achieve soft contact between the pressure block 31 and the piston rod, reducing scratches and crushing on the surface of the piston rod.

[0060] In this embodiment, the clamping plane positioning mechanism includes an outer sleeve seat 11, an inner sleeve 13 and an end cover 12. The outer sleeve seat 11 is fixed to the base plate. The outer sleeve seat 11 includes a mounting plate and an outer sleeve vertically arranged on the mounting plate. The wall of the outer sleeve is provided with a pair of first guide grooves 111 extending downward from the upper edge. The wall of the inner sleeve 13 is provided with a pair of guide portions 131 protruding radially outward. The pair of first guide grooves 111 and the pair of guide portions 131 are evenly arranged on both sides of the radial direction of the corresponding wall. The inner sleeve 13 is vertically inserted into the outer sleeve The guide portion 131 slides and guides with the first guide groove 111. The end cover 12 is installed on the open end of the cylinder of the outer sleeve seat 11 to prevent the guide portion 131 and the inner sleeve 13 from falling out. The support seat 14 is a T-shaped sleeve. The lower part of the support seat 14 is threadedly connected to the inner sleeve 13. The first spring 16 is installed in the outer sleeve seat 11 and the upper and lower ends are respectively against the inner sleeve 13 and the mounting plate. A pair of locking bolts 15 are threadedly installed at both radial ends of the end cover 12. The locking bolts 15 pass through the outer sleeve and tighten the inner sleeve 13. After loosening the locking bolt 15, the support seat 14 and the inner sleeve 13 are lifted upward under the action of the first spring 16 until the upper end surface of the support seat 14 and the clamping plane of the piston rod are in contact with each other. It can adapt to piston rods of different sizes and has good versatility. At the same time, an electromagnet can be embedded in the upper part of the T-shaped sleeve to maintain the upper end surface of the support seat 14 and the clamping plane of the piston rod in contact with each other, avoiding the piston rod being subjected to force and causing the above-mentioned contact state to be released during the process of the clamping mechanism 3 pressing the piston rod downward.

[0061] In this embodiment, the inner sidewalls of the V-shaped support block 21 define second guide grooves 211. The buffer block 22 slides vertically within these second guide grooves 211. A pair of stepped holes 212 are defined at the bottom of the second guide grooves 211. A pair of first guide rods 24 corresponding to the stepped holes 212 are located at the bottom of the buffer block 22. These first guide rods 24 extend into the stepped holes 212 and are fitted with second springs 25. One end of the second spring 25 abuts the bottom surface of the buffer block 22, while the other end abuts the stepped surface of the guide holes. The output end of the lifting cylinder 26 is preferably disconnected from the buffer block 22.

[0062] In this embodiment, a pair of mounting seats 32 are installed at the output end of the electric push rod, and a third guide groove 321 is opened on the mounting seat 32. The pressure block 31 is an inverted Y-shape, and the upper part of the pressure block 31 extending upward is a sliding part. The sliding part is slidably installed in the third guide groove 321. The end of the sliding part and the notch of the third guide groove 321 are limited by a concave and convex structure. A pair of second guide rods 34 are provided in the third guide groove 321. The second guide rods 34 are sleeved with a third spring 33 and extend into the guide hole at the end of the sliding part. The two ends of the third spring respectively abut against the sliding part and the top plate of the third guide groove 321.

[0063] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A clamp for the piston rod of an automobile hydraulic cylinder, characterized by: It includes a base plate and a clamping plane positioning support mechanism, an outer cylindrical surface positioning support mechanism and a pressing mechanism installed on the base plate; The clamping plane positioning support mechanism includes a support seat that is vertically floatingly arranged by a first spring and can be locked to a limited height by a locking bolt; The outer cylindrical surface positioning support mechanism is provided with a pair of spaced-apart members, each comprising a V-shaped support block, on the two inner side walls of which are mounted buffer blocks vertically raised and lowered by a lifting cylinder, the buffer blocks forming an inclined surface parallel to the inner side wall of the V-shaped support block, on which rotating rollers are spaced-apart; The pressing mechanism includes an electric push rod and a pressing block elastically connected to the output end of the electric push rod.

2. The automobile hydraulic cylinder piston rod clamp according to claim 1, characterized in that: The clamping plane positioning support mechanism includes an outer sleeve seat, an inner sleeve and an end cover. The outer sleeve seat is fixed to the base plate. A pair of first guide grooves are opened on the cylinder wall of the outer sleeve seat. A pair of guide parts are formed on the outer wall of the inner sleeve. The inner sleeve is vertically inserted into the outer sleeve seat. The guide parts slide and guide with the first guide grooves. The end cover is installed at the open end of the cylinder body of the outer sleeve seat. The support seat is threadedly connected to the inner sleeve. The first spring is installed in the outer sleeve seat and the upper and lower ends respectively abut against the inner sleeve and the outer sleeve seat.

3. The automobile hydraulic cylinder piston rod clamp according to claim 2, characterized in that: The two inner side walls of the V-shaped support block are provided with second guide grooves, the buffer block is installed in the second guide grooves, the bottom of the second guide grooves is provided with a pair of step holes, the bottom of the buffer block is provided with a pair of first guide rods corresponding to the step holes one by one, the first guide rods extend into the step holes and are sleeved with a second spring, one end of the second spring abuts against the bottom surface of the buffer block, and the other end abuts against the step surface of the guide hole.

4. The automobile hydraulic cylinder piston rod clamp according to claim 3, characterized in that: The output end of the electric push rod is equipped with a mounting seat, and the mounting seat is provided with a third guide groove. The upper part of the pressure block extends upward to form a sliding portion, and the sliding portion is slidably installed in the third guide groove. The end of the sliding portion and the notch of the third guide groove are limited by a concave-convex structure. A pair of second guide rods are provided in the third guide groove. The second guide rods are provided with a third spring and extend into the guide hole at the end of the sliding portion. The two ends of the third spring respectively abut against the sliding portion and the top plate of the third guide groove.

5. The automobile hydraulic cylinder piston rod clamp according to claim 4, characterized in that: The pressing block is in an inverted Y shape.

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