CN213005041U - Bearing chest expander of Steyr off-road vehicle - Google Patents
Bearing chest expander of Steyr off-road vehicle Download PDFInfo
- Publication number
- CN213005041U CN213005041U CN202020558677.8U CN202020558677U CN213005041U CN 213005041 U CN213005041 U CN 213005041U CN 202020558677 U CN202020558677 U CN 202020558677U CN 213005041 U CN213005041 U CN 213005041U
- Authority
- CN
- China
- Prior art keywords
- claw
- handle
- handle body
- bearing
- top plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model relates to a special tool for automobile maintenance, in particular to a bearing tensioner of a Steyr off-road vehicle, which comprises an outer ejector rod, an outer handle, an inner handle, a beam, a bolt, a top plate, a hook claw and a nut, wherein the center of the beam is provided with a beam threaded hole, and the beam is provided with two beam strip holes in the radial direction of the beam threaded hole; the hook claw comprises a threaded rod part and a claw block, the threaded rod part and the claw block are connected in an L shape, and the claw block is used for hooking the bearing; the two hook claws are respectively arranged in the two long holes of the cross beam in a sliding manner, and nuts are arranged at one ends of the threaded rod parts, which are far away from the claw blocks; the top plate is circular; the ejector rod is a cylinder, the outer surface of the outer ejector rod is provided with threads, and one end of the ejector rod is provided with an outer handle; the ejector rod is in threaded connection with a threaded hole of the cross beam, and one end, far away from the handle mounting hole, of the ejector rod abuts against the upper surface of the top plate.
Description
Technical Field
The utility model relates to a vapour vehicle repair maintenance specialized tool especially relates to a bearing chest expander of steyr cross country vehicle.
Background
A large number of Steyr off-road vehicles are arranged in the army, and the military vehicles often participate in special terrain exercise and training, and the bearings of the military vehicles are easy to wear and damage, so that the bearings of the damaged shaft sleeves need to be replaced.
The prior art scheme is as shown in figure 8, the tool for disassembling the bearing of the shaft sleeve comprises two semicircular clamping jaws 1 which are connected with the outer side of the bearing in a clamping mode, a clamping jaw sleeve 2, a long bolt 3, a straight pull arm 4, a push rod 5 and a push rod head 6, wherein the semicircular clamping jaws 1 clamp the bearing, the clamping jaw sleeve 2 sleeves the two semicircular clamping jaws 1, the push rod 5 is in threaded connection with the straight pull arm 4 to advance, the push rod head 6 abuts against one end of the shaft sleeve, and then the shaft sleeve is separated from the bearing by the push rod head 6.
The size of the clamping part of the existing tool is fixed, and in winter and summer, the size change of the tool is possibly different from the size change of the bearing, so that the tool cannot be disassembled.
The above-mentioned techniques have been found to have at least the following technical problems: the Steyr off-road vehicle is provided with bearings and shaft sleeves with different sizes. But the jack catch and the ejector pin head size of prior art's bearing chest expander can not be adjusted, can not the universalization, and application scope is not wide, only is used for dismantling or repairing the bearing of fixed model.
Disclosure of Invention
The embodiment of the application provides a bearing chest expander of Steyr cross country vehicle, has solved among the prior art jack catch of bearing chest expander and ejector pin head size unadjustable, has realized the universalization.
A bearing chest expander of a Steyr off-road vehicle comprises an outer ejector rod, an outer handle, a cross beam, a bolt, a top plate, a hook claw and a nut,
the cross beam is provided with cross beam threaded holes and cross beam long-strip holes;
a beam threaded hole is formed in the center of the beam, is a through hole and vertically penetrates through the beam;
the two cross beam through grooves are positioned on two sides of the cross beam threaded hole;
the longitudinal symmetrical surfaces of the two beam through grooves are coplanar and pass through the axis of the beam threaded hole, and one end of the beam elongated groove, which is far away from the beam threaded hole, extends to the two sides of the beam and is provided with an opening;
the hook claw comprises a threaded rod part and a claw block;
the threaded rod part is cylindrical and the outer side surface of the threaded rod part is provided with threads;
the claw block is in a block shape and is used for abutting against the lower end face of the inner ring of the bearing;
one end of the threaded rod part is fixedly connected with the claw block, and the threaded rod part and the claw block form an L shape;
the threaded rod part of each hook claw is arranged in each beam long groove in a penetrating manner, one hook claw is arranged in each beam long groove, and the outer diameter of the threaded rod part is smaller than the inner width of each beam long groove;
a nut is arranged at one end of the threaded rod part, which is far away from the claw block, the nut is positioned at the upper side of the cross beam, and the outer diameter of the nut is larger than the inner width of the long groove of the cross beam;
two top plate grooves are formed in the top plate, the length direction of each top plate groove is parallel to the long grooves of the cross beam, and one end of each top plate groove, which is located at the edge of the top plate, is opened;
the inner width of the long groove of the top plate is not less than that of the threaded rod part, and the hook claw can move up and down in the long groove of the top plate;
the inner side surface of the long groove of the top plate in the length direction is provided with internal threads which can be in threaded connection with the bolt; the bolt is used for pressing the hook claw to the shaft sleeve when the claw block butts against the bearing, so that the hook claw is prevented from being unhooked from the bearing;
the ejector rod is provided with an external thread and is in threaded connection with a threaded hole of the cross beam;
and a handle is arranged at one end of the ejector rod, which is far away from the hook claw.
A handle mounting hole is radially formed in one end, far away from the top plate, of the ejector rod;
the handle comprises an outer handle body, a handle ball head and an inner handle assembly;
the outer handle body can slide in the handle mounting hole of the ejector rod;
the handle body is a cylindrical rod and is arranged in a handle mounting hole at one end of the ejector rod in a penetrating manner;
the handle ball head is fixedly connected with one end of the handle body;
the handle body is a hollow rod, the inner wall of the handle body is provided with threads, and one end of the handle body, which is far away from the handle ball head, is opened;
the inner handle assembly comprises an inner handle ball head and an inner handle body;
the inner handle body is rod-shaped and provided with threads, and the inner handle body can be in threaded connection with an inner hole of the handle body;
the inner handle ball head is fixedly connected with one end of the inner handle body, which is positioned outside the handle body;
the total length of the handle can be changed by screwing the inner handle body into or out of the handle body, and the handle with the variable length saves labor.
Threads are arranged at two ends of the inner wall of the handle body, and threads matched with the threads on the inner wall of the handle body are arranged at one end of the inner handle body, which is positioned in the handle body; the overall length of the handle can be lengthened or shortened more quickly.
The hook claw also comprises a rotary hook claw plate;
the rotary claw plate is in a strip shape;
the claw block is provided with two side surfaces which are adjacent to the side surface of the threaded rod part and are parallel to the axis of the threaded rod part, the two side surfaces are respectively hinged with one end of a pin shaft of a rotary claw hooking plate, and the rotation axis of the rotary claw hooking plate is parallel to the axis of the threaded rod part; the upper side surface of the rotary claw hooking plate is coplanar with the upper side surface of the claw block;
the upper side surface of the claw block is provided with an anti-slip surface for increasing the friction force at the contact part of the claw block and the bearing so that the claw block and the bearing are always tightly clamped;
the technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:
the position of the threaded rod part of the hook claw in the two long holes of the cross beam is adjusted according to the size of the bearing to be disassembled, so that the scheme of the application can adapt to bearings with different sizes; therefore, the hook claw is universal and can be used for disassembling bearings with different sizes and specifications;
drawings
FIG. 1 is a schematic view of a bearing tensioner for a Steyr cross-country vehicle according to the present application;
FIG. 2 is a schematic view of the structure of the outer handle;
FIG. 3 is a schematic view of the inner handle structure;
FIG. 4 is an isometric view of the pawl;
FIG. 5 is an isometric view of the cross-beam;
FIG. 6 is an isometric view of the top plate;
FIG. 7 illustrates an optimized modification of the pawl;
FIG. 8 is a prior art schematic of a bearing tensioner;
FIG. 9 is a schematic view of a tire nut dismounting labor-saving wrench;
FIG. 10 is a schematic view of an input-output flange nut socket wrench;
in the figure: the handle comprises a bearing 01, a shaft sleeve 02, a mandril 10, a handle mounting hole 11, an outer handle 20, an outer handle ball 21, an outer handle body 22, an inner handle 30, an inner handle ball 31, an inner handle body 32, a cross beam 40, a cross beam long hole 41, a cross beam threaded hole 42, a bolt 50, a top plate 60, a top plate groove 61, a hook claw 70, a threaded rod part 71, a claw block 72, an anti-skid surface 72-1, a rotary hook claw plate 73 and a nut 80.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiment of the application realizes the universalization through providing a bearing chest expander of a Steyr cross country vehicle in order to solve among the prior art jack catch and ejector pin head size unadjustable of bearing chest expander.
Referring to fig. 1-6, before a bearing tensioner of a steyr off-road vehicle is introduced, a shaft sleeve bearing is described, wherein the shaft sleeve 02 is a stepped shaft and comprises a first pitch shaft 02-01 and a second pitch shaft 02-02, and the second pitch shaft 02-02 penetrates through an inner ring of the bearing 01 and is in interference fit;
a bearing chest expander of a Steyr off-road vehicle comprises an outer mandril 10, an outer handle 20, a cross beam 40, a bolt 50, a top plate 60, a claw 70 and a nut 80,
the beam 40 is provided with a beam threaded hole 42 and a beam long-strip hole 41;
a cross beam threaded hole 42 is formed in the center of the cross beam 40, and the cross beam threaded hole 42 is a through hole and vertically penetrates through the cross beam 40;
two cross beam through grooves 41 are arranged on two sides of the cross beam threaded hole 42;
the longitudinal symmetrical surfaces of the two cross beam through grooves 41 are coplanar and pass through the axis of the cross beam threaded hole 42, and one end of the cross beam long groove 41, which is far away from the cross beam threaded hole 42, extends to the two sides of the cross beam and is open;
the hook claw 70 comprises a threaded rod part 71 and a claw block 72;
the threaded rod part 71 is cylindrical and is provided with threads on the outer side surface;
the claw block 72 is in a block shape and is used for abutting against the lower end face of the inner ring of the bearing 01;
one end of the threaded rod part 71 is fixedly connected with a claw block 72;
the threaded rod part 71 and the claw block 72 form an L shape;
the threaded rod part 71 of the hook claw 70 is arranged in the long beam groove 41 in a penetrating manner, one hook claw 70 is arranged in each long beam groove 41, and the outer diameter of the threaded rod part 71 is smaller than the inner width of each long beam groove 41, so that the hook claws 70 can move in the long beam groove 40 along the length direction of the long beam groove;
a nut 80 is arranged at one end of the threaded rod part 71 far away from the claw block 72, the nut 80 is positioned at the upper side of the cross beam 40, and the outer diameter of the nut 80 is larger than the inner width of the long groove 41 of the cross beam; therefore, the hook claw 70 can flexibly change the position in the long beam groove 41, the change of the distance between the claw blocks 72 is realized, the bearing with any size can be disassembled, the difference of the expansion size of the part and the expansion size change of the disassembling tool caused by different seasons does not need to be considered, and the application range is wider.
Two top plate grooves 61 are formed in the top plate 60, the length direction of each top plate groove 61 is parallel to the corresponding cross beam long groove 41, and one end, located at the edge of the top plate 60, of each top plate groove 61 is open;
the inner width of the long groove 61 of the top plate is not less than that of the threaded rod part 71, and the hook claw 70 can move up and down in the long groove 61 of the top plate;
the inner side surface of the long slot 61 of the top plate in the length direction is provided with internal threads which can be in threaded connection with the bolt 50; the bolt 50 is used for pressing the hook claw 70 to the shaft sleeve when the claw block 72 butts against the bearing 01, so that the hook claw 70 is prevented from being unhooked from the bearing;
the ejector rod 10 is provided with an external thread and is in threaded connection with a threaded hole 42 of the cross beam;
the end of the mandril 10 far away from the hook claw 70 is provided with a handle 20.
In the actual process all the time, the claw block 72 of the claw 70 is firstly hooked on the end face of the bearing inner ring, and the cross beam 40 is positioned at the same time, so that the claw 70 is not separated from the bearing, and meanwhile, the top plate 60 compresses the end face of the shaft sleeve. Then, by rotating the handle 20, the stem 10 is rotated in the beam screw hole 42 and moved toward the top plate 60. Along with the movement of the mandril 10, the top plate 60 compresses the shaft sleeve to realize the drawing of the bearing by the hook claw 70. Finally, the bearing is pulled out of the bearing housing.
In the in-service use process, the cooperation is too tight between bearing and the axle sleeve, and the power that needs to dismantle is very big, and the manpower is difficult to be dismantled. Therefore, it is critical how to apply a greater force to the top plate 60. Therefore, the handle 20 is further improved.
A handle mounting hole 11 is formed in one end, far away from the top plate 60, of the ejector rod 10;
the handle 20 comprises an outer handle body 21, a handle bulb 22 and an inner handle assembly 30;
the outer handle body 21 can slide in the handle mounting hole 11 of the mandril 10;
the handle body 21 is a cylindrical rod and is arranged in the handle mounting hole 11 at one end of the ejector rod 10 in a penetrating manner;
the handle bulb 22 is fixedly connected with one end of the handle body 21;
the handle body 21 is a hollow rod, the inner wall of the handle body is provided with threads, and one end, far away from the handle bulb 22, of the handle body is open;
the inner handle assembly 30 comprises an inner handle ball 31 and an inner handle body 32;
the inner handle body 32 is rod-shaped and provided with threads, and the inner handle body 32 can be in threaded connection with an inner hole of the handle body 21;
the inner handle ball head 31 is fixedly connected with one end of the inner handle body 32, which is positioned outside the handle body 21;
the total length of the handle 20 is changed by screwing the inner handle ball 31 into or out of the handle body 21, and the lengthened handle 20 is beneficial to labor saving;
in actual use, if the inner wall of the handle body 21 is provided with the screw thread, it takes a long time to screw the inner handle body 32. Therefore, threads are provided at both ends of the inner wall of the handle body 21, while threads that are screw-fitted to the inner wall of the handle body 21 are provided at the end of the inner handle body 32 that is located inside the handle body 21.
When the tool is actually used in the process of disassembling some rusted bearings and shafts, the contact area between the two claw blocks 72 and the bearing to be disassembled is small, and the pressure between the end surface of the bearing and the claw blocks 72 is large, so that the end surface of the bearing is damaged;
with reference to fig. 9, the optimization of the hook jaw 70, said hook jaw 70 further comprises a rotary hook jaw plate 73;
the rotary claw plate 73 is in a strip shape;
the claw block 72 is provided with two side surfaces which are adjacent to the side surface of the threaded rod part 71 and are parallel to the axis of the threaded rod part 71, the two side surfaces are respectively hinged with one end of a rotary claw plate 73 through a pin shaft, and the rotation axis of the rotary claw plate 73 is parallel to the axis of the threaded rod part 71; the upper side surface of the rotary claw plate 73 is coplanar with the upper side surface of the claw block 72;
when the hook claw 72 hooks the lower end surface of the bearing; the rotary claw plate 73 can be rotated, the upper side surface of the rotary claw plate is fully contacted with the lower end surface of the bearing, the contact area of the claw 70 and the bearing is increased, and the pressure intensity on the contact surface is reduced;
preferably, the upper side surface of the claw block 72 is provided with an anti-slip surface 72-1 for increasing the friction force at the contact position of the claw block 72 and the bearing 01, so that the claw block 72 and the bearing 01 are tightly clamped all the time;
other tools commonly used with the bearing tensioner in the automobile maintenance of the utility model also comprise a special tool for a labor-saving wrench for disassembling the tire nut shown in figure 9 and a socket wrench for an input/output flange nut shown in figure 10;
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a bearing chest expander of steyr cross country vehicle, includes outer ejector pin, outer handle, crossbeam, bolt, roof, colludes claw, nut, its characterized in that:
the cross beam is provided with cross beam threaded holes and cross beam long-strip holes;
a beam threaded hole is formed in the center of the beam, is a through hole and vertically penetrates through the beam;
the two cross beam through grooves are positioned on two sides of the cross beam threaded hole;
the longitudinal symmetrical surfaces of the two beam through grooves are coplanar and pass through the axis of the beam threaded hole, and one end of the beam elongated groove, which is far away from the beam threaded hole, extends to the two sides of the beam and is provided with an opening;
the hook claw comprises a threaded rod part and a claw block;
the threaded rod part is cylindrical and the outer side surface of the threaded rod part is provided with threads;
the claw block is in a block shape and is used for abutting against the lower end face of the inner ring of the bearing;
one end of the threaded rod part is fixedly connected with the claw block, and the threaded rod part and the claw block form an L shape;
the threaded rod part of each hook claw is arranged in each beam long groove in a penetrating manner, one hook claw is arranged in each beam long groove, and the outer diameter of the threaded rod part is smaller than the inner width of each beam long groove;
a nut is arranged at one end of the threaded rod part, which is far away from the claw block, the nut is positioned at the upper side of the cross beam, and the outer diameter of the nut is larger than the inner width of the long groove of the cross beam;
two top plate grooves are formed in the top plate, the length direction of each top plate groove is parallel to the long grooves of the cross beam, and one end of each top plate groove, which is located at the edge of the top plate, is opened;
the inner width of the long groove of the top plate is not less than that of the threaded rod part, and the hook claw can move up and down in the long groove of the top plate;
the inner side surface of the long groove of the top plate in the length direction is provided with internal threads which can be in threaded connection with the bolt; the bolt is used for pressing the hook claw to the shaft sleeve when the claw block butts against the bearing, so that the hook claw is prevented from being unhooked from the bearing;
the ejector rod is provided with an external thread and is in threaded connection with a threaded hole of the cross beam;
and a handle is arranged at one end of the ejector rod, which is far away from the hook claw.
2. A steyr off-road vehicle bearing tensioner as claimed in claim 1, wherein:
a handle mounting hole is radially formed in one end, far away from the top plate, of the ejector rod;
the handle comprises an outer handle body, a handle ball head and an inner handle assembly;
the outer handle body can slide in the handle mounting hole of the ejector rod;
the handle body is a cylindrical rod and is arranged in a handle mounting hole at one end of the ejector rod in a penetrating manner;
the handle ball head is fixedly connected with one end of the handle body;
the handle body is a hollow rod, the inner wall of the handle body is provided with threads, and one end of the handle body, which is far away from the handle ball head, is opened;
the inner handle assembly comprises an inner handle ball head and an inner handle body;
the inner handle body is rod-shaped and provided with threads, and the inner handle body can be in threaded connection with an inner hole of the handle body;
the inner handle ball head is fixedly connected with one end of the inner handle body, which is positioned outside the handle body;
the total length of the handle can be changed by screwing the inner handle body into or out of the handle body, and the handle with the variable length saves labor.
3. A steyr off-road vehicle bearing tensioner according to claim 2, wherein:
threads are arranged at two ends of the inner wall of the handle body, and threads matched with the threads on the inner wall of the handle body are arranged at one end of the inner handle body, which is positioned in the handle body; the overall length of the handle can be lengthened or shortened more quickly.
4. A steyr off-road vehicle bearing tensioner as claimed in claim 1, wherein:
the hook claw also comprises a rotary hook claw plate;
the rotary claw plate is in a strip shape;
the claw block is provided with two side surfaces which are adjacent to the side surface of the threaded rod part and are parallel to the axis of the threaded rod part, the two side surfaces are respectively hinged with one end of a pin shaft of a rotary claw hooking plate, and the rotation axis of the rotary claw hooking plate is parallel to the axis of the threaded rod part; the upper side surface of the rotary claw hooking plate is coplanar with the upper side surface of the claw block.
5. A steyr off-road vehicle bearing tensioner as claimed in claim 1, wherein:
the anti-skidding surface is arranged on the upper side face of the claw block and used for increasing the friction force at the contact position of the claw block and the bearing so that the claw block and the bearing are tightly clamped all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558677.8U CN213005041U (en) | 2020-04-15 | 2020-04-15 | Bearing chest expander of Steyr off-road vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020558677.8U CN213005041U (en) | 2020-04-15 | 2020-04-15 | Bearing chest expander of Steyr off-road vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213005041U true CN213005041U (en) | 2021-04-20 |
Family
ID=75442973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020558677.8U Active CN213005041U (en) | 2020-04-15 | 2020-04-15 | Bearing chest expander of Steyr off-road vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213005041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346562A (en) * | 2021-12-17 | 2022-04-15 | 江西洪都航空工业集团有限责任公司 | Clamping tool |
-
2020
- 2020-04-15 CN CN202020558677.8U patent/CN213005041U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346562A (en) * | 2021-12-17 | 2022-04-15 | 江西洪都航空工业集团有限责任公司 | Clamping tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205022294U (en) | A full -automatic positioning bolt screws up robot for tire dismouting | |
| CN204997617U (en) | Major diameter compression inner ring for ship engine | |
| CN213005041U (en) | Bearing chest expander of Steyr off-road vehicle | |
| CN207788202U (en) | A kind of tire bolt attaching/detaching apparatus | |
| CN206412902U (en) | A kind of electric motor end cap provision for disengagement | |
| CN204868680U (en) | Dual -purpose nut runner | |
| CN216858844U (en) | Axle semi-axis dismantles auxiliary device | |
| CN205218944U (en) | A instrument for quick elasticity bolt | |
| CN213136589U (en) | Special tool for detaching steering plumbing arm suitable for cross-country vehicle | |
| CN213562255U (en) | Nut dismounting tool | |
| CN108655998A (en) | A kind of novel upright type monkey wrench | |
| CN217703079U (en) | But semi-axis spline end integral quick replacement semi-axis gear's frock clamp | |
| CN208438264U (en) | Using towing hook bar as the tyre wrench of Lengthened moment arm | |
| CN202696404U (en) | Rapid adjustable automatic tire expanding device special for motor stator | |
| CN219788181U (en) | Spanner tool for round nut of compressor | |
| CN210757405U (en) | Laborsaving box spanner that dismouting tire was used | |
| CN215701323U (en) | Disassembling tool | |
| CN2436271Y (en) | Open type punched L-shaped socket spanner | |
| US20180311802A1 (en) | Atv, side-by-side, and snowmobile universal ball joint remover and installer tools and service kit | |
| CN210678498U (en) | Disc pump tool | |
| CN215091925U (en) | Automatic centering device used during non-reaming bolt connection of parts | |
| CN212315408U (en) | Puller for quickly disassembling brake drum | |
| CN210704638U (en) | Labor-saving tool for assembling and disassembling bolt of wellhead device | |
| CN209970052U (en) | Push-pull rod of replacing device of wheel nest type full-automatic screwdriver bit | |
| CN105328606A (en) | Tool and method for rapidly loosening and tightening bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |