CN110270962A - A kind of clamping horizontal pulling device - Google Patents

Abstract

The invention provides a clamping and pushing device, which is applied to bearings. The clamping and pushing device includes: a first clamping piece; a second clamping piece, which is movably connected with the first clamping piece; the first clamping piece The holding piece and the second holding piece are disposed opposite to each other along the circumferential direction of the bearing, and form a mutual restrictive force to be fixed on the bearing; wherein, the first holding piece is provided with a first operating part, and the second holding piece is provided with a first operating part. The second clamping part is provided with a second operating part; the first operating part and the second operating part are used for grasping, so as to generate a flat thrust parallel to the axial direction of the bearing on the bearing. The clamping and pushing device provided by the present invention only needs to place the clamping piece on the circumferential direction of the bearing and clamp the bearing, generate a flat thrust through the operating part, and realize the separation of the bearing through the friction between the clamping piece and the bearing transmission shaft. Therefore, the disassembly work of the bearing can be completed under the condition of a single person, which not only saves working hours and manpower, but also avoids stress damage to the bearing and the transmission shaft.

Description

A clamping push device

technical field

The invention relates to the technical field of machinery, in particular to a clamping and pushing device.

Background technique

With the prosperity and development of the field of aviation technology, various flying devices have emerged as the times require. Taking helicopters as an example, because of their flexible flight, takeoff and landing are not restricted by the flight runway, they are widely used in rescue, aerial photography, and medical assistance and other fields.

However, when existing helicopters are being maintained or parts are replaced, it is particularly difficult to replace the bearing of the propeller drive shaft. It is usually necessary to gather multiple workers to work together and use knocking tools to disassemble the bearing of the propeller drive shaft, and the propeller drive shaft and the bearing are extremely vulnerable to external knock stress during the disassembly process and cause damage.

Therefore, the existing helicopter propeller drive shaft bearings are time-consuming and labor-intensive in the disassembly process, and the drive shaft and bearing are easily damaged, which is becoming an increasingly acute technical problem.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a clamping and pushing device, which is used to solve the problem that the existing helicopter propeller drive shaft bearings are time-consuming and labor-intensive during the disassembly process, and the drive shaft and bearings are easily damaged. technical challenge.

In order to achieve the above object, the present invention provides a clamping and pushing device, which is applied to bearings. The clamping and pushing device includes: a first clamping part; a second clamping part, which is movably connected with the first clamping part; The first clamping piece and the second clamping piece are oppositely arranged along the circumferential direction of the bearing, and form a mutual restrictive force to be fixed on the bearing; wherein, the first clamping piece is provided with a second An operating part, the second clamping part is provided with a second operating part; the first operating part and the second operating part are used for grasping, so as to generate a flat thrust parallel to the axial direction of the bearing on the bearing.

In an embodiment of the present invention, the first clamping member includes a first surface in contact with the outer surface of the bearing, and the second clamping member includes a first surface in contact with the outer surface of the bearing. Two surfaces; the types of the first surface and the second surface include curved surfaces to conform to the outer surface of the bearing.

In an embodiment of the present invention, a buffer is provided on the first curved surface, and a buffer is also provided on the second curved surface; wherein, the material of the buffer includes rubber.

In an embodiment of the present invention, the mutual constraint force is realized through screw connection between the first clamping part and the second clamping part, which includes: the first clamping part is provided with at least one first A through hole, the first through hole is provided with an internal thread; the second clamping member is provided with a second through hole corresponding to the first through hole, and the second through hole is provided with an internal thread; The above-mentioned first through hole and the second through hole are used for inserting a mounting piece with an external thread.

In an embodiment of the present invention, the mutual restriction force is realized through magnetic attraction between the first clamping part and the second clamping part, which includes: the first clamping part includes a magnetic The first magnetic part, the second clamping part includes a magnetic second magnetic part, and the first magnetic part and the second magnetic part attract each other.

In an embodiment of the present invention, the first operating part is detachably connected to the first clamping part, and the second operating part is detachably connected to the second clamping part.

In an embodiment of the present invention, the first operating part includes a first operating rod, the first operating rod is perpendicular to the axial direction of the bearing; the second operating part includes a second operating rod, the The second operating rod is perpendicular to the axial direction of the bearing.

In an embodiment of the present invention, the first operating rod and the second operating rod are parallel or located on the same straight line.

In an embodiment of the present invention, the first operating part includes a first handle, which is arranged on the first end surface of the first clamping member and the first end surface is perpendicular to the axial direction of the bearing; the second The operation part includes a second handle, which is arranged on the second end surface of the second clamping member and the second end surface is perpendicular to the axial direction of the bearing; wherein, the first handle and the second handle are located the same end of the device.

In an embodiment of the present invention, the bearing includes a bearing of a propeller drive shaft of a helicopter.

As mentioned above, the clamping and pushing device related to the present invention has the following beneficial effects: the clamping and pushing device provided by the present invention only needs to arrange the clamping part in the circumferential direction of the bearing and clamp the bearing, and generate a flat thrust through the operating part , the bearing can be separated from the transmission shaft through the friction force between the clamping part and the bearing. Therefore, the clamping and pushing device provided by the present invention can complete the disassembly work of the bearing under the condition of a single person, which not only saves working hours and manpower, but also avoids the stress damage of the bearing and the transmission shaft.

Description of drawings

Fig. 1 shows a front view of a clamping and pushing device in an embodiment of the present invention.

Fig. 2a shows a side view of the clamping and pushing device in one embodiment of the present invention.

Fig. 2b shows a cross-sectional view of the clamping and pushing device in one embodiment of the present invention.

Component designation description

11 First clamping part

111 first surface

112 First mounting hole

113 First positioning hole

114 Mounting hole for the first operating part

12 Second clamping piece

121 Second Surface

122 Second mounting hole

123 Second positioning hole

124 Mounting hole for the second operating part

125 Hollow part

13 The first operation department

14 The second operation part

A direction

direction B

C direction

A-A section line

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description, and are not used to limit the practicable scope of the present invention. The change or adjustment of the relative relationship within the scope, without any substantial change in the technical content, shall also be regarded as the applicable scope of the present invention.

The invention provides a clamping and pushing device, which comprises a clamping part and an operating part. The clamping part is used to clamp the bearing, and the operation part is used for the user to grasp to apply a flat thrust to the bearing, and the bearing is detached from the transmission shaft under the action of the flat thrust. The clamping and pushing device provided by the invention does not need to hit the bearing or the transmission shaft, and a single person can complete the bearing disassembly.

It should be noted that the transmission shafts and bearings mentioned above may be transmission shafts and bearings in the general technical field, or propeller transmission shafts and bearings thereof specially used for helicopters in the aviation field. The working principle of the horizontal push clamping device provided by the present invention will be described below with specific examples.

As shown in FIG. 1 , it shows the front view of the clamping and pushing device in an embodiment of the present invention, and the front view can be formed by looking towards the end faces of the transmission shaft and the bearing. It should be noted that although the transmission shaft and the bearing are not shown in the figure, those skilled in the art should know that the bearing is usually sleeved on the transmission shaft, and the clamping and pushing device provided by the present invention is compatible with the appearance of the bearing. Face to face contact.

The clamping and pushing device includes a first clamping part 11 and a second clamping part 12 for clamping a bearing not shown in the figure. The first clamping part 11 and the second clamping part 12 are two independent parts, which can be contacted or separated from each other. When using the clamping and pushing device provided by the present invention, the user can separate the first clamping part 11 and the second clamping part 12 on the bearing along the circumferential direction of the bearing.

Specifically, the first clamping part 11 and the second clamping part 12 are arranged on the circumferential direction of the bearing and are oppositely arranged, and a mutual restrictive force is formed between them to be fixed on the bearing. How to form the mutual constraint force between the first clamping part 11 and the second clamping part 12 will be explained below. The so-called mutual restriction means: the first clamping part 11 produces a restricting force towards the arrow A direction to the second clamping part 12, and the second clamping part 12 produces a direction towards the first clamping part 11. Constraining force in the direction of arrow B.

The first clip 11 includes a first surface 111 in contact with the bearing, and the second clip 12 includes a second surface 121 in contact with the bearing. The first surface 111 and the second surface 121 are preferably curved surfaces, so that they can completely adhere to the outer surface of the bearing. The first surface 111 and the second surface 121 can wrap all or part of the outer surface of the bearing, thereby increasing the friction area between the clamping member and the bearing, thereby obtaining greater friction force to facilitate the disassembly of the bearing . It should be noted that when the clamping and pushing device is loaded on a bearing, the first clamping part 11 and the second clamping part 12 can contact each other to completely wrap the outer surface of the bearing, or they can be mutually The separation is to partially wrap the outer surface of the bearing, which is not limited in the present invention.

Preferably, the first surface 111 and the second surface 121 are respectively provided with a buffer, which is used to buffer the frictional force on the bearing during the horizontal pushing process and the extrusion force from the clamping member. Specifically, the buffer member can be made of materials such as rubber, air cushion film, or foam plastic. It is worth noting that the transmission shaft and bearings of helicopter propellers are different from ordinary transmission shafts and bearings in that their dimensions are finer and more slender, and they are more sensitive to external stress. Therefore, in the clamping and pushing device provided by the present invention, the buffer member is arranged on the first surface and the second surface in contact with the bearing, which can be replaced by the stress on the bearing and the transmission shaft, which further protects the propeller transmission shaft and the bearing. Thus, the service life of the propeller shaft and bearings of the helicopter propeller can be extended.

The clamping and pushing device also includes a first operating part 13 and a second operating part 14, the first operating part 13 is provided on the first clamping part 11, and the second operating part 14 is provided on the second clamping part 12 superior. The first operating part 13 and the second operating part 14 can be directly grasped by the user or operated with a tool, so that the first clamping part 11 and the second clamping part 12 respectively generate an axis with the bearing. To the parallel flat thrust, the direction C perpendicular to Fig. 1 is used to represent the axial direction of the bearing in the figure.

Taking FIG. 1 as an example, the user grasps the first operating part 13 and the second operating part 14 with both hands, and applies a flat thrust perpendicular to the direction of FIG. 1 to the first clamping part 11 and the second clamping part 12. , the clamping member 11 and the clamping member 12 generate mutual friction with the bearing under the action of the flat thrust. When the frictional force is large enough to a certain extent, the bearing can be driven to break free from the shackles brought by the sealing ring and separate from the transmission shaft, thereby realizing the disassembly work of the bearing.

Preferably, the first operating part 13 is detachably connected to the first clamping part 11 , and the second operating part 14 is also detachably connected to the second clamping part 12 . The connection relationship between the operation part and the corresponding clamping part can be realized by means of screw connection, snap connection, or adhesive connection. When the user uses the clamping and pushing device of the present invention, the first operating part 13 and the second operating part 14 can be installed on the first clamping part 11 and the second clamping part 12 respectively, and in the non-use state The first operation part and the second operation part can be removed when the operation is in progress, thereby saving storage space and being convenient for users to carry.

Optionally, the types of the first operating part 13 and the second operating part 14 may be operating rods. For ease of distinction, let the operating lever corresponding to the first operating part 13 be the first operating lever, and let the operating lever corresponding to the second operating part 14 be the second operating lever. The first operating rod is arranged on the circumferential surface of the first clamping member 11 and is perpendicular to the axial direction of the bearing; the second operating rod is arranged on the circumferential surface of the second clamping member 12 and is perpendicular to the axial direction of the bearing. in the axial direction of the bearing. The first operating rod and the second operating rod are preferably arranged parallel to each other or on the same straight line, so that the applied thrust is more balanced, thereby further reducing the impact of stress on the bearing and the transmission shaft.

It should be noted that the operating part is not limited to the operating lever in the above embodiments, and may also be a handle. For ease of distinction, let the handle corresponding to the first operating part 13 be the first handle, and let the handle corresponding to the second operating part 14 be the second handle. The first handle is provided on the first end surface of the first clamping member 11, and the second handle is provided on the second end surface of the second clamping member 12. The end surface refers to the direction toward the axial direction C in FIG. The surface of the holder as viewed in the direction.

Wherein, the first end surface and the second end surface are both perpendicular to the axial direction of the bearing, and the first handle and the second handle are located at the same end of the clamping and pushing device. The first handle and the second handle are used for the user to grasp and pull the handle to generate a pulling force on the clamping part, and the friction force between the clamping part and the bearing can also drive the bearing to disengage from the transmission shaft.

It is worth noting that in the existing helicopter maintenance process, the disassembly of the bearing usually requires the cooperation and cooperation of multiple workers to complete. The specific process is as follows: workers need to position the propeller drive shaft, and workers need to use tools such as hammers to knock the bearings. In addition, in order to avoid damage to the bearing and transmission shaft due to excessive or uneven force, multiple workers are required to strike synchronously at the symmetrical position of the bearing and the force should not be too large. Therefore, the disassembly work of the bearing is really time-consuming and laborious, and often results in damage to the bearing and the transmission shaft.

The clamping and pushing device provided by the present invention can well solve the above-mentioned technical problems. It only needs to arrange the first clamping part and the second clamping part along the circumferential direction of the bearing and clamp the bearing, through the first operating part and The second operating part generates a flat thrust parallel to the axial direction of the bearing, and the bearing can be separated from the transmission shaft through the friction force between the clamping part and the bearing. Therefore, the clamping and pushing device provided by the present invention can complete the disassembly work of the bearing under the condition of a single person, which not only saves working hours and manpower, but also avoids the stress damage of the bearing and the transmission shaft. Various implementations of the clamping and pushing device provided by the present invention will be described below with specific embodiments.

As shown in FIG. 2 a , it shows a schematic diagram of a clamping and pushing device in an embodiment of the present invention. If the clamping and pushing device shown in FIG. 1 is taken as a front view, FIG. 2 a shows a side view of the clamping and pushing device. In this embodiment, the mutual restriction force is realized through screw connection between the first clamping part and the second clamping part, and the specific realization method is as follows: the first clamping part is provided with at least one first A through hole 112, the first through hole 112 is provided with an internal thread; the second clamping piece that is not shown in the figure is provided with a second through hole corresponding to the first through hole 112, and the second through hole in the second through hole Also has internal thread. When the first clamping piece and the second clamping piece are oppositely arranged along the circumferential direction of the bearing, a mounting piece with an external thread can be inserted into the first through hole 112 and the second through hole, and through the thread The first clamping part and the second clamping part are engaged and fixed.

Optionally, the first clamping piece is provided with at least one first positioning hole 113 for insertion of a positioning pin (not shown) to achieve alignment between the first clamping piece and the second clamping piece. In addition, the mounting hole 114 shown in FIG. 2a is inserted into the first operating part to fix it. It should be noted that although the second clip is not shown, its structure is symmetrical and similar to that of the first clip, so those skilled in the art should be able to know the second clip on the basis of the first clip. The structure of the holder.

As shown in FIG. 2 b , it shows the A-A sectional view of FIG. 2 a , and the A-A sectional line passes through the first mounting hole 112 , the operating part mounting hole 114 , and the first positioning hole 113 . Corresponding to the first mounting hole 112, the mounting hole 114 of the first operating part, and the first positioning hole 113 are the second mounting hole 122 provided on the second clamping member, the mounting hole 124 of the second operating part, and the second positioning hole 123 .

The size of the first installation hole 112 of the first clip and the second installation hole 122 of the second clip can be the same or different. Taking Fig. 2b as an example, the second mounting hole 122 is a settling hole for screw insertion, the size of the second mounting hole 122 is larger than the size of the first mounting hole 112, and the second clamping member 12 is provided with the The hollow portion 125 connected to the second mounting hole 122 is used for placing the screw head of the screw. The screw body of the screw passes through the second mounting hole 122 and the first mounting hole 112, and the screw head of the screw is fixed in the hollow portion 125, so that the screw is completely hidden in the second clamping member 12 is inside but not exposed, which improves the structural integrity of the clamping and pushing device and improves the safety of product use.

Optionally, in other embodiments, the mutual restriction force can be realized through magnetic attraction between the first clamping part and the second clamping part, and the specific implementation method is as follows: the first clamping The part includes a first magnetic part with magnetism, the second clamping part includes a second magnetic part with magnetism, and the first magnetic part and the second magnetic part attract each other. For example, the S pole of the first magnetic part is set toward the second magnetic part, and the N pole of the second magnetic part is set toward the first magnetic part, and the S pole and the The magnetic attraction force between the N poles realizes the mutual restriction force.

It should be noted that, the implementation of the mutual restriction force between the first clamping part and the second clamping part is not limited to threaded connection and magnetic attraction, for example, it can also be connected by spring, snap connection, or Adhesive connection and other ways are realized, and the present invention will not list them one by one.

To sum up, the clamping and pushing device provided by the present invention only needs to arrange the first clamping part and the second clamping part along the circumference of the bearing and clamp the bearing, and the first operating part and the second operating part generate The flat thrust parallel to the axial direction of the bearing can separate the bearing from the transmission shaft through the friction force between the clamping part and the bearing. Therefore, the clamping and pushing device provided by the present invention can complete the disassembly work of the bearing under the condition of a single person, which not only saves working hours and manpower, but also avoids stress damage to the bearing and the transmission shaft, so the present invention effectively overcomes the problems in the prior art. Due to various shortcomings, it has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. A clamping and pushing device, characterized in that it is applied to bearings, and the clamping and pushing device comprises: first clamping member; The second clamping part is movably connected with the first clamping part; the first clamping part and the second clamping part are oppositely arranged along the circumferential direction of the bearing, and form a mutual restrictive force to be fixed on the bearing on said bearing; Wherein, the first clamping part is provided with a first operating part, and the second clamping part is provided with a second operating part; the first operating part and the second operating part are for grasping to generate Flat thrust parallel to the bearing axis. 2. The clamping and pushing device according to claim 1, wherein the first clamping member includes a first surface in contact with the outer surface of the bearing, and the second clamping member includes a contact with the outer surface of the bearing. The second surface that is in contact with the outer surface of the bearing; the types of the first surface and the second surface include curved surfaces to conform to the outer surface of the bearing. 3 . The clamping and pushing device according to claim 2 , wherein a buffer is provided on the first curved surface, and a buffer is also provided on the second curved surface; wherein, the material of the buffer includes rubber. 4 . 4. The clamping and pushing device according to claim 1 or 2, wherein the mutual restriction force is realized through a screw connection between the first clamping part and the second clamping part, which includes: The first clamping member is provided with at least one first through hole, and the first through hole is provided with internal threads; The second clamping member is provided with a second through hole corresponding to the first through hole, and the second through hole is provided with an internal thread; the first through hole and the second through hole are provided with external threads The mounting parts are inserted. 5. The clamping and pushing device according to claim 1 or 2, wherein the mutual restriction force is realized between the first clamping part and the second clamping part through magnetic attraction force, which includes: The first clamping part includes a first magnetic part with magnetism, the second clamping part includes a second magnetic part with magnetism, and the first magnetic part and the second magnetic part attract each other. 6 . The clamping and pushing device according to claim 1 , wherein the first operating part is detachably connected to the first clamping part, and the second operating part is detachably connected to the second clamping part. 7. The clamping and pushing device according to any one of claims 1-6, wherein the first operating part comprises a first operating rod, and the first operating rod is perpendicular to the axial direction of the bearing ; The second operating part includes a second operating rod, and the second operating rod is perpendicular to the axial direction of the bearing. 8. The clamping and pushing device according to claim 7, wherein the first operating rod and the second operating rod are parallel or located on the same straight line. 9. The clamping and pushing device according to any one of claims 1-6, characterized in that, the first operating part comprises a first handle, which is arranged on the first end surface of the first clamping part and the first One end surface is perpendicular to the axial direction of the bearing; the second operating part includes a second handle, which is arranged on the second end surface of the second clamping member and the second end surface is perpendicular to the axial direction of the bearing; wherein , the first handle and the second handle are located at the same end of the clamping and pushing device. 10. The clamping and pushing device according to claim 1, wherein the bearing comprises a bearing of a propeller drive shaft of a helicopter.