CN211333033U

CN211333033U - End cover screwing tool

Info

Publication number: CN211333033U
Application number: CN201921920776.XU
Authority: CN
Inventors: 许晓峰; 闫晓龙
Original assignee: Zhejiang Longtie Zongheng Track Traffic Maintenance Technology Co ltd
Current assignee: Zhejiang Longtie Zongheng Track Traffic Maintenance Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-08-25
Anticipated expiration: 2029-11-08

Abstract

The application discloses end cover tightening tool. The end cover screwing tool comprises a base, a connecting support, a manual pre-pressing part, a rotary screwing part and a workpiece positioning plate, wherein the connecting support comprises an upper support and a middle connecting rod, and the upper support is connected with the base through the middle connecting rod; the manual pre-compression part comprises: the device comprises a guide cylinder, a lower connecting block, an upper reset device, a first connecting rod, a second connecting rod and a manual pressure rod, wherein the first connecting rod is connected with an upper bracket; the spin-on member includes: the rotary knob is fixed on the middle sliding rod; the workpiece positioning plate is arranged on the base. The technical problem of the inefficiency that causes because end cover equipment operation is extremely inconvenient is solved in this application.

Description

End cover screwing tool

Technical Field

The application relates to the field of mechanical tools for brakes, in particular to an end cover tightening tool.

Background

The air overflow valve is used as an important part for the brake in the subway and the high-speed train, and can involve the processes of disassembly, overhaul, assembly and the like as a part for conventional overhaul. Because the air overflow valve has few application scenes, no special equipment or tool is used for assembling the end cover at present, particularly the spring end cover. The working principle of the overflow valve is that when the air pressure is greater than the pressure of the internal tabletting spring, the air pushes out the tabletting, so that the over-atmospheric pressure is released to keep the pressure constant, and the running safety of the train is ensured. At present, the spring end cover is directly assembled by manually pressing the end cover to offset the spring force, so that the external thread of the end cover is screwed into the overflow valve body, and the end cover is fixed through threads.

The main problems existing are: the preforming spring pressure is big, and operating personnel will overcome huge spring pressure on one side, still will make the end cover aim at the screw thread and make the end cover twist on the valve body, and the operation is very inconvenient, and the packaging efficiency is low, and is very big to the extrusion force of finger in the operation, and the inhomogeneous personnel that cause injury hard, perhaps pop out under the effect of spring force when the error end cover causes danger. Aiming at the technical problem of low efficiency caused by inconvenient assembly operation of the end cover, no effective solution is provided at present.

SUMMERY OF THE UTILITY MODEL

The main objective of this application is to provide an end cover tightening tool to solve the technical problem that the end cover packaging efficiency is low, unsafe.

To achieve the above object, according to one aspect of the present application, there is provided an end cap tightening tool. The end cap tightening tool includes: the automatic screwing device comprises a base, a connecting support, a manual pre-tightening part, a rotary screwing part and a workpiece positioning plate, wherein the connecting support comprises an upper support and a middle connecting rod, and the upper support is connected with the base through the middle connecting rod.

Manual pre-compaction part mainly carries out the pre-compaction to the spring force of overflow valve end cover, and manual pre-compaction part includes: the upper support is connected with the upper support, the guide cylinder penetrates through the upper support, the guide cylinder is connected with the lower connecting block, and the upper reset device is installed on the guide cylinder.

The rotary tightening member includes: the knob is fixed on the middle sliding rod, the middle sliding rod penetrates through the guide cylinder, the pressing device is installed between the sleeve and the lower connecting block, and the sleeve is connected with the middle sliding rod; the workpiece positioning plate is arranged on the base. The guide cylinder can freely slide up and down in the upper support hole, can move vertically and downwards under the pressing action of the manual pressure lever, and can drive the lower connecting block to move downwards at the same time, and the pressing stroke is determined along with the manually pressed stroke until the end cover of the overflow valve is in threaded contact with the valve body placed on the workpiece positioning plate. When the manual pressure is released, the manual pre-pressing part can automatically return to the default state under the action of the upper resetting device. The lower connecting block is connected with the guide cylinder through threads, so that the lower connecting blocks with different sizes are convenient to maintain and replace. The pressing device has a floating function when the end cover is screwed down conveniently, so that the end cover is easily screwed into the workpiece valve body. The workpiece positioning plate is formed by profiling according to the shape of the workpiece overflow valve, and has the function of accurately positioning and not easily shaking after the workpiece is placed. The end cover is vertically pressed downwards under the action of the manual pre-pressing component, and the internal thread hole of the workpiece valve body can be accurately aligned.

Furthermore, the middle connecting rod is detachably connected with the base and the upper bracket respectively.

Furthermore, the guide cylinder is perpendicular to the base, and the guide cylinder is detachably connected with the lower connecting block through threads.

Further, the first link is connected with the upper bracket through a hinge pin.

Furthermore, the cross section of the manual pressure lever is circular, and the cross section of the handheld end of the manual pressure lever is larger than that of the middle part of the manual pressure lever. The manual pressure lever is convenient to hold by hand and press downwards.

Furthermore, the upper reset device is an upper reset spring, and the pressing device is a pressing spring.

Further, a hexagonal square hole is arranged below the sleeve and corresponds to an outer hexagon of the end cover, and the sleeve is detachably connected with the middle sliding rod through threads.

In the application, the purpose of pressing the workpiece overflow valve body is achieved by adopting a mode that a manual pre-pressing part is used for pressing the workpiece valve body, and a mode that a rotary pressing part is used for pressing the workpiece valve body, and connecting a guide cylinder, a lower connecting block, an upper reset device, a first connecting rod, a second connecting rod and a manual compression rod; the purpose of screwing the workpiece overflow valve body is achieved through the knob, the middle sliding rod, the pressing device and the sleeve, the workpiece overflow valve body is very practical, and the workpiece valve body is fixed through the workpiece positioning plate. And then solved because the extremely inconvenient technical problem that causes of end cover equipment operation inefficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

fig. 1 is a schematic structural view of an end cap tightening tool according to the present invention;

FIG. 2 is a schematic structural diagram of a relief valve body in the embodiment;

wherein in the figure: 1. a base; 2. an upper bracket; 3. a middle connecting rod; 4. a hinge pin; 5. a first link; 6. a second link; 7. a manual compression bar; 8. a guide cylinder; 9. a middle sliding rod; 10. a knob; 11. an upper reset device; 12. a lower connecting block; 13. a pressing device; 14. a sleeve; 15. a workpiece positioning plate; 16. connecting a bracket; 17. an end cap; 18. an overflow valve body; 19. a spring; 20. and (6) tabletting.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion. In the present application, the terms "upper", "lower", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection; may be directly connected or indirectly connected through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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 application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the present application relates to an end cap tightening tool including: the device comprises a base 1, a connecting bracket 16, a manual pre-tightening part, a rotary tightening part and a workpiece positioning plate 15, wherein the connecting bracket 16 comprises an upper bracket 2 and a middle connecting rod 3, and the upper bracket 2 is connected with the base 1 through the middle connecting rod 3. Manual pre-compaction part mainly carries out the pre-compaction to the spring force of overflow valve end cover, and manual pre-compaction part includes: guide cylinder 8, lower connecting block 12, go up resetting means 11, first connecting rod 5, second connecting rod 6 and manual depression bar 7, first connecting rod 5 is connected with upper bracket 2, second connecting rod 6 is connected with lower connecting block 12, 5 tip of first connecting rod, 6 tip of second connecting rod all are connected with manual depression bar 7, guide cylinder 8 runs through upper bracket 2, guide cylinder 8 is connected with lower connecting block 12, it installs on guide cylinder 8 to go up resetting means 11.

As shown in fig. 1, the rotary tightening unit includes: the rotary knob 10 is fixed on the middle sliding rod 9, the middle sliding rod 9 penetrates through the guide cylinder 8, the pressing device 13 is installed between the sleeve 14 and the lower connecting block 12, and the sleeve 14 is connected with the middle sliding rod 9; the workpiece positioning plate 15 is mounted on the base 1. The guide cylinder 8 can freely slide up and down in the hole of the upper support 2, the guide cylinder 8 can vertically move up and down under the pressing action of the manual pressure lever 7, the lower connecting block 12 can be driven to move down, and the pressing stroke is determined along with the manual pressing stroke until the end cover of the overflow valve is in threaded contact with the valve body placed on the workpiece positioning plate 15. When the manual pressure is released, the manual pre-stressing unit will automatically return to the default state under the action of the upper resetting device 11. The lower connecting block 12 is connected with the guide cylinder 8 through threads, so that the lower connecting block 12 with different sizes is convenient to maintain and replace. The hold-down device 13 facilitates a floating function when tightening the end cap so that the end cap can be easily screwed into the valve body of the workpiece. The workpiece positioning plate 15 is formed by profiling according to the shape of a workpiece overflow valve, and has the function of positioning accurately and preventing the workpiece from shaking easily after being placed. The end cover is vertically pressed downwards under the action of the manual pre-pressing component, and the internal thread hole of the workpiece valve body can be accurately aligned.

As shown in fig. 1, the middle connecting rod 3 is detachably connected to the base 1 and the upper bracket 2, respectively. The guide cylinder 8 is perpendicular to the base 1, and the guide cylinder 8 is detachably connected with the lower connecting block 12 through threads. The first link 5 is connected to the upper bracket 2 by a hinge pin 4. The cross section of the manual pressure lever 7 is circular, and the cross section of the handheld end of the manual pressure lever 7 is larger than that of the middle part of the manual pressure lever 7. The hand-held manual pressure lever 7 is convenient to press downwards. The upper reset device 11 is an upper reset spring, and the pressing device 13 is a pressing spring. A hexagonal square hole is arranged below the sleeve 14, the hexagonal square hole corresponds to an outer hexagon of the end cover, and the sleeve 14 is detachably connected with the middle sliding rod 9 through threads.

The operation method of the end cover screwing tool comprises the following steps: a spring 19 and a pressing sheet 20 are arranged below the end cover 17, the end cover provided with the pressing sheet 20 and the spring 19 is placed in an overflow valve body 18, the overflow valve body is placed on a workpiece positioning plate for fixing, and the end cover which needs to be screwed is arranged in the same vertical direction of a sleeve of a screwing tool. And slowly pressing down the handle by the left hand, confirming whether the outer hexagon of the end cover is matched with the hexagonal sleeve when the end cover contacts the hexagonal sleeve, and rotating the end cover to be matched with the hexagonal sleeve if the outer hexagon of the end cover is not matched with the hexagonal sleeve. After the end cover and the hexagonal sleeve are completely matched, the manual pressure lever starts to feel the reaction force of the overflow valve spring, the manual pressure lever is slowly pressed down until the end cover is in contact with the inner thread of the valve body, and then the knob at the top is screwed down by rotating with the right hand. If in the screwing process, the threads are not matched, the screw can rotate anticlockwise, the end cover threads are matched with the relief valve body, then the screw is screwed up clockwise, the left-hand pressing handle is kept still during the screwing process, and the situation that the end cover cannot be contacted with the valve body threads due to insufficient pressure is avoided, so that the end cover cannot be screwed into the valve body. The hold down tightening tool applies a tightening force to the end cap of the workpiece and causes it to contact the internal threads of the valve body. The end cap can be screwed into the valve body clockwise by rotating the tightening part, and the manual pre-tightening part can be loosened after the end cap is screwed into the valve body for a plurality of circles. And after the valve body is taken down, the torque of the valve body is confirmed by using a torque wrench. The tool has the functions of simple and convenient operation and quick positioning and screwing, can greatly improve the assembly efficiency and reduce the potential danger of operators.

In the embodiment, the purpose of pressing the valve body of the workpiece overflow valve is achieved by adopting a mode that a manual pre-pressing part presses the valve body of the workpiece and a rotary pressing part presses the valve body of the workpiece in a screwing mode through the connection among the guide cylinder 8, the lower connecting block 12, the upper resetting device 11, the first connecting rod 5, the second connecting rod 6 and the manual pressing rod 7; the purpose of screwing the workpiece overflow valve body is achieved through the knob 10, the middle sliding rod 9, the pressing device 13 and the sleeve 14, the workpiece overflow valve body is very practical, and the valve body is fixed through the workpiece positioning plate 15. And then solved because the end cover equipment operation extremely inconvenient and the technical problem that the inefficiency caused, had high efficiency, safe, convenient, practical technological effect.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An end cover screwing tool comprises a base (1), a connecting support (16), a manual pre-pressing part, a rotary screwing part and a workpiece positioning plate (15), and is characterized in that the connecting support (16) comprises an upper support (2) and a middle connecting rod (3), and the upper support (2) is connected with the base (1) through the middle connecting rod (3);

the manual pre-compression part comprises: the device comprises a guide cylinder (8), a lower connecting block (12), an upper reset device (11), a first connecting rod (5), a second connecting rod (6) and a manual pressure lever (7), wherein the first connecting rod (5) is connected with an upper support (2), the second connecting rod (6) is connected with the lower connecting block (12), the end parts of the first connecting rod (5) and the second connecting rod (6) are connected with the manual pressure lever (7), the guide cylinder (8) penetrates through the upper support (2), the guide cylinder (8) is connected with the lower connecting block (12), and the upper reset device (11) is installed on the guide cylinder (8);

the rotary tightening member includes: the rotary knob is fixed on the middle sliding rod (9), the middle sliding rod (9) penetrates through the guide cylinder (8), the pressing device (13) is installed between the sleeve (14) and the lower connecting block (12), and the sleeve (14) is connected with the middle sliding rod (9);

the workpiece positioning plate (15) is arranged on the base (1).

2. The end cap tightening tool according to claim 1, wherein the intermediate connecting rod (3) is detachably connected to the base (1) and the upper bracket (2), respectively.

3. The end cap tightening tool according to claim 1, wherein the guide cylinder (8) is perpendicular to the base (1), and the guide cylinder (8) is detachably connected to the lower connection block (12) by a screw.

4. The end cap tightening tool according to claim 1, characterized in that the first link (5) is connected to the upper bracket (2) by a hinge pin (4).

5. The end cap tightening tool according to claim 1, wherein the manual compression lever (7) is circular in cross section, and the cross section of the hand-held end of the manual compression lever (7) is larger than the cross section of the middle portion of the manual compression lever (7).

6. The end cap tightening tool according to claim 1, wherein the upper return means (11) is an upper return spring, and the pressing means (13) is a pressing spring.

7. The end cap tightening tool according to claim 1, wherein a hexagonal square hole is provided below the sleeve (14), and the sleeve (14) is detachably connected to the intermediate slide bar (9).