Protective device for continuously and rapidly assembling multiple O-shaped rings through one-hand operation

Abstract

The utility model discloses a protective device for continuously and rapidly assembling a plurality of O-shaped rings through one-hand operation. The protective device comprises a protective sleeve, a fixed shaft and an elastic push claw body, the protective sleeve is installed on the front side of the fixing shaft, the front portion of the protective sleeve is a large cylinder part, the rear portion of the large cylinder part is transited to a taper part, and the rear portion of the taper part is transited to a small cylinder part; an inner hole a for mounting a workpiece is formed in the front end surface of the protective sleeve; the elastic pushing claw body is provided with an open cavity backwards from the front end face, the fixing shaft is installed in the open cavity of the elastic pushing claw body, and the fixing shaft and the elastic pushing claw body move front and back relative to each other. According to the O-shaped ring assembling tool, the problem that multiple O-shaped rings are assembled continuously and rapidly with one hand is solved, meanwhile, the problems that in the original O-shaped ring assembling process, the inclination phenomenon is prone to occurring, repeated correction is needed, and scratching and pulling are prone to occurring are solved, the labor intensity is relieved, the assembling time is saved, and the assembling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of O-ring assembly, in particular to continuous and rapid assembly of multiple O-rings, in particular to a single-handed operation continuous and rapid assembly of multiple O-ring protection devices. Background Art

[0002] In mechanical and hydraulic products, O-rings are often used in the design of sealing structures, and O-rings often need to be assembled. Since O-rings are mostly made of flexible materials such as rubber, they are highly elastic and easily scratched or strained, resulting in failure. In addition, they must be able to meet the requirements of fast and continuous assembly during assembly to meet the needs of large-scale assembly.

[0003] Traditional assembly methods generally use both hands to assemble directly or use simple assembly aids. Both hands are needed to repeatedly push the O-ring or the simple assembly aids used have no guiding function, which causes the O-ring to be crooked or slanted during the assembly process and requires repeated corrections, resulting in a large assembly workload and low efficiency. It is also easy to scratch or strain the O-ring, causing it to become unqualified and fail. It is not suitable for large-scale continuous, quality-assured and fast assembly needs. Utility Model Content

[0004] Based on the problems existing in the prior art, the utility model aims to provide a protective device for continuously and quickly assembling multiple O-rings with one hand, which improves the assembly quality and efficiency of O-rings, reduces the assembly workload, and greatly improves work efficiency.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] A single-handedly operated, continuous and rapid assembly of multiple O-ring protection devices comprises a protective sleeve, a fixed shaft, and an elastic push claw body, wherein the protective sleeve is mounted on the front side of the fixed shaft, the front portion of the protective sleeve is a large cylindrical portion, the rear portion of the large cylindrical portion transitions to a tapered portion, and the rear portion of the tapered portion transitions to a small cylindrical portion; an inner hole a for mounting a workpiece is provided on the front end surface of the protective sleeve; an opening is provided on the elastic push claw body from the front end surface to the rear, the fixed shaft is mounted in the opening of the elastic push claw body, and the fixed shaft and the elastic push claw body move relative to each other back and forth.

[0007] When using, first put several O-rings behind the tapered part of the protective sleeve, and then install the protective sleeve on the front side of the fixed shaft. At this time, the front end face of the elastic push claw body is against the O-ring, and then the workpiece to be assembled is installed in the inner hole a, and finally the elastic push claw body is pushed forward to enable the elastic push claw body to push the O-ring and push the O-ring out of the protective sleeve, so that the O-ring is installed on the workpiece. The above action of pushing the rear end of the elastic push claw body forward can be completed with one hand.

[0008] Further preferably, the connection method between the fixed shaft and the elastic push claw body can be: a return spring and a fixed shaft are installed in the opening cavity of the elastic push claw body, the return spring abuts against the rear wall of the opening cavity, and the fixed shaft abuts against the front of the return spring; the rear part of the fixed shaft is provided with a through hole a for the handle to pass through up and down, and the upper and lower sides of the elastic push claw body are provided with long grooves a for the handle to move forward and backward, the handle passes through the long groove a and the through hole a in turn, the handle and the long groove a are clearance fit, and the front part of the elastic push claw body is the push claw part; the protective sleeve is inserted into the opening cavity of the elastic push claw body and installed at the front end of the fixed shaft.

[0009] The long groove a is a waist-shaped groove, the inner hole a and the outer diameter of the large cylindrical part are thin-walled structures, and the hole wall of the inner hole a is ≤1mm, which reduces the tensile deformation of the O-ring.

[0010] Further preferably, the connection method between the fixed shaft and the elastic push claw body can also be: the rear end face of the elastic push claw body is provided with a through hole b connected to the open cavity; a cylinder b extends axially backward from the rear end face of the fixed shaft, and the cylinder b passes through the through hole b and is connected to the pressure rod; the reset spring is installed on the cylinder b between the rear end face of the elastic push claw body and the pressure rod, and the protective sleeve is inserted into the open cavity of the elastic push claw body and installed at the front end of the fixed shaft.

[0011] The rear part of the elastic push claw body is provided with two symmetrical through holes c, and the through holes c are transitionally equipped with two handles.

[0012] Further preferably, the tapered part is divided into a large tapered part and a small tapered part, the large cylindrical part transitions to the small tapered part at the rear, the small tapered part transitions to the large tapered part at the rear, and the large tapered part transitions to the small cylindrical part at the rear. The large tapered body structure is to make it easy and quick to assemble the O-ring to the tapered body of the protective sleeve when it is in a free state; the outer diameter of the small tapered body is slightly smaller than the inner hole size of the O-ring, which can make the O-ring play a centering role and arrange it in order, so as to prepare for subsequent assembly.

[0013] Further preferably, in order to reduce the weight of the installation device, an inner hole b for reducing weight is provided, the inner hole a is connected to the inner hole b backwards, and the inner diameter of the inner hole b is smaller than that of the inner hole a.

[0014] Further preferably, the small cylindrical portion of the protective sleeve extends axially backward with a T-type clamp, the front end face of the fixed shaft has a slot a cut into the T-type clamp, behind the slot a is a cavity for the T-type clamp to rotate one circle, and the front end face of the fixed shaft is equipped with a stop pin to prevent the T-type clamp from excessive rotation.

[0015] Further preferably, to prevent the protective sleeve from detaching and failing during operation, the front end of the fixed shaft also includes a tightening mechanism, which is installed at the rear of the cavity, and a blind hole for installing the tightening shaft is provided at the rear of the cavity, a tightening spring and a tightening shaft are installed in the blind hole, the tightening spring presses against the rear of the blind hole, and the tightening shaft presses against the front of the tightening spring, the length of the tightening shaft plus the relaxed length of the tightening spring is greater than the depth of the blind hole, a waist-shaped hole for a fixing pin to pass through is provided in the middle part of the tightening shaft, and a long groove b for a fixing pin to move forward and backward is provided at a corresponding position of the elastic pushing claw body, and the fixing pin passes through the elastic pushing claw body, the fixed shaft and the tightening shaft in sequence for fixation.

[0016] Further preferably, the long groove b is a waist-shaped groove.

[0017] Further preferably, the rear half of the tightening shaft is a cylinder a equipped with a tightening spring, and the diameter of the cylinder a is smaller than the diameter of the tightening shaft.

[0018] Further preferably, after the protective sleeve is installed on the front side of the fixed shaft, the tapered portion completely or partially leaks out of the elastic push claw body.

[0019] Further preferably, the push claw portion of the elastic push claw body is provided with a tapered hole that matches the tapered portion of the protective sleeve.

[0020] Further preferably, the front end face of the push claw part provides a pushing surface for pushing the O-ring forward. While satisfying the requirement of the front end face of the elastic push claw body to push the O-ring, the overall structure of the elastic push claw body is optimized and the weight is reduced as much as possible. The front end outer diameter of the push claw part is a step structure, and the push surface is provided with a circle of outer edge, that is, the outer diameter of the push surface is larger than the outer diameter of the elastic push claw body.

[0021] Further preferably, the push claw part is provided with a plurality of slots b evenly distributed around the axis of the push claw part backward along the axis direction of the elastic push claw body, and the push claw part plays an opening role during operation. The elastic push claw body is provided with an inner hole annular groove at the root of the push claw part, which plays a role in making the push claw easy to open and naturally contract.

[0022] The utility model has the following beneficial effects:

[0023] The one-handed assembly protection device can realize flexible assembly movement and convenient operation; during assembly, the assembly work can be completed instantly with one hand operation, and the assembly is efficient;

[0024] It can protect the O-ring;

[0025] Since the compression deformation of the O-ring cross section after extrusion is very small and almost negligible, multiple O-rings can be prepared at one time, and continuous assembly of multiple O-rings can be achieved, reducing the workload of multiple preparations in the middle;

[0026] Since the device of the utility model has a guiding function, accurate assembly work can be achieved, the workload of repeated corrections caused by the original tendency to be skewed and tilted is eliminated, and accurate, high-quality, efficient and rapid assembly work can be achieved.

[0027] By designing and manufacturing a device that can assemble multiple O-ring protection pieces continuously and quickly with one hand, the efficiency of O-ring assembly is improved, time and labor are saved, quality and quantity are guaranteed, and operation and movement are flexible, which meets the production needs of large quantities of shaft products that require O-ring assembly.

[0028] The utility model solves the problem of assembling multiple O-rings in a single-handed operation in a continuous, fast and quality-preserving manner, and solves the problem that the original O-ring assembly process is prone to crooked and tilted, requires repeated correction, and is prone to scratches and strains, reduces labor intensity, saves assembly time, and greatly improves assembly efficiency. The device has a compact structure, beautiful shape, light weight, and small space occupation; it is simple and convenient to operate; and it can be applied to large, medium, and small batch assembly needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The utility model is shown in the overall structure section diagram Figure 1 .

[0032] Figure 2 The utility model is shown in the overall structure section diagram Figure 2 .

[0033] Figure 3 express Figure 1 , 2 Middle AA section view.

[0034] Figure 4 express Figure 1 , 2 Middle CC section view.

[0035] In the figure: 1-protective sleeve, 101-large cylindrical part, 102-small tapered part, 103-large tapered part, 104-small cylindrical part, 105-inner hole a, 106-inner hole b, 107-T-type clamp, 2-elastic push claw body, 201-open cavity, 202-long groove a, 203-push claw part, 204-push surface, 205-slot b, 206-inner hole annular groove, 3-reset spring, 4-fixed shaft, 402-slot a, 404-stop pin, 405-blind hole, 406-tightening spring, 407-tightening shaft, 408-waist-shaped hole, 409-fixing pin, 5-handle, 6-O-ring, 7-pressure rod. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0037] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0039] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0040] Embodiment 1: A single-handedly operated, continuous and rapid assembly of multiple O-ring protection devices, comprising a protective sleeve 1, an elastic push claw body 2; an opening 201 of the elastic push claw body 2 is provided with a return spring 3 and a fixed shaft 4, the return spring 3 abuts against the rear wall of the opening 201, and the fixed shaft 4 abuts against the front of the return spring 3; the outer diameter of the fixed shaft 4 and the elastic push claw body 2 are a small clearance fit structure, and relative movement can be achieved.

[0041] A through hole a is provided at the rear of the fixed shaft 4 for the handle 5 to pass through, and long grooves a202 are provided on the upper and lower sides of the elastic push claw body 2 for the handle 5 to move forward and backward. The handle 5 is fixed through the long groove a202 and the through hole a in sequence, and the long groove a202 and the handle 5 are clearance-matched, so that when the device is used, the handle 5 and the elastic push claw body 2 will not get stuck when moving relative to each other, and the front part of the elastic push claw body 2 is the push claw part 203.

[0042] In this embodiment, the long groove a202 on the elastic push claw body 2 for the handle 5 to pass through is a waist-shaped groove, and the through hole a on the fixed shaft 4 and the handle 5 are a transition fit structure to prevent the handle 5 from falling off; after the handle 5 is assembled, the fixed shaft 4, the handle 5, and the elastic push claw body 2 can be connected into a group of mechanisms; the length of the handle 5 meets the needs of handheld operation.

[0043] Embodiment 2: A single-handedly operated, continuous and rapid assembly of multiple O-ring protection devices, comprising a protective sleeve 1, a fixed shaft 4, an elastic push claw body 2, and a reset spring 3; the protective sleeve 1 is installed on the front side of the fixed shaft 4, the front part of the protective sleeve 1 is a large cylindrical part 101, the rear part of the large cylindrical part 101 transitions to a tapered part, and the rear part of the tapered part transitions to a small cylindrical part 104; the front end face of the protective sleeve 1 is provided with an inner hole a105 for installing a workpiece; the elastic push claw body 2 is provided with an opening 201 from the front end face to the rear, the fixed shaft 4 is installed in the opening 201 of the elastic push claw body 2, and the fixed shaft 4 and the elastic push claw body 2 move relative to each other back and forth through the reset spring 3.

[0044] The front part of the elastic push claw body 2 is the push claw part 203, and the rear end face of the elastic push claw body 2 is provided with a through hole b connected to the open cavity 201; a cylinder b is extended axially backward from the rear end face of the fixed shaft 4, and the cylinder b passes through the through hole b and is connected to the pressure rod 7, and the reset spring 3 is installed on the cylinder b between the rear end face of the elastic push claw body and the pressure rod 7.

[0045] The rear part of the elastic push claw body 2 is provided with two symmetrical through holes c, and two handles 5 are installed in the transition of the through holes c.

[0046] In the above embodiments, the front part of the protective sleeve 1 is a large cylindrical part 101, and the large cylindrical part 101 transitions to a tapered part, and the tapered part is divided into a large tapered part 103 and a small tapered part 102. The large cylindrical part 101 transitions to the small tapered part 102, then to the large tapered part 103, and then to the small cylindrical part 104. After the protective sleeve 1 is installed on the front side of the fixed shaft 4, the small tapered body part leaks out all or part of the elastic push claw body 2, and the front end surface of the protective sleeve 1 is provided with an inner hole a105 for installing the workpiece, and the wall of the inner hole a105 is usually ≤1mm. The inner hole a105 is connected to the inner hole b106 at the rear, and the inner diameter of the inner hole b106 is smaller than that of the inner hole a105, and the inner hole b106 is a weight-reducing hole.

[0047] Installation method of the protective sleeve 1 and the fixed shaft 4: the small cylindrical part 104 of the protective sleeve 1 extends axially backward with a T-shaped clamp 107, the front end face of the fixed shaft 4 has a slot a402 cut into the T-shaped clamp 107, the rear of the slot a402 is a cavity for the T-shaped clamp 107 to rotate one circle, and the front end face of the fixed shaft 4 is equipped with a stop pin 404 to prevent the T-shaped clamp 107 from excessive rotation.

[0048] The thickness of the T-shaped head is smaller than the width of the slot a402 on the front end surface of the fixed shaft 4, so that the T-shaped clamp 107 can be easily inserted into the slot a402.

[0049] The end of the fixed shaft 4 also includes a tightening mechanism, which is installed at the rear of the cavity. A blind hole 405 for installing a tightening shaft 407 is provided at the rear of the cavity. A tightening spring 406 and a tightening shaft 407 are installed in the blind hole 405. The tightening spring 406 presses against the rear of the blind hole 405, and the tightening shaft 407 presses against the front of the tightening spring 406. The length of the tightening shaft 407 plus the relaxed length of the tightening spring 406 is greater than the depth of the blind hole 405. The outer diameter of the tightening shaft 407 and the blind hole 405 of the fixed shaft 4 are matched with a small gap, so relative movement can be achieved.

[0050] A waist-shaped hole 408 through which a fixing pin 409 passes is provided in the middle portion of the tightening shaft 407, and a long groove b through which the fixing pin 409 passes is provided at a corresponding position of the elastic pushing claw body 2. The fixing pin 409 passes through the elastic pushing claw body 2, the fixing shaft 4 and the tightening shaft 407 in sequence for fixation. The fixing pin 409 can prevent the tightening shaft 407 from falling off. The long groove b and the fixing pin 409 are clearance fit, so that the tightening shaft 407 can move back and forth without causing jamming. The long groove b can be a waist-shaped groove.

[0051] The rear half of the tightening shaft 407 is a cylinder a for assembling a tightening spring 406, and the diameter of the cylinder a is smaller than the diameter of the tightening shaft 407. The tightening spring 406 is assembled in the blind hole 405, and the inner hole of the tightening spring 406 and the rear half of the cylinder a of the tightening shaft 407 are in a clearance fit; the outer diameter of the tightening spring 406 and the blind hole 405 are in a clearance fit; the tightening spring 406 can push the tightening shaft 407 out of the blind hole 405.

[0052] like Figure 3 As shown, there is a pin hole on the front end surface of the fixed shaft 4 for assembling a stop pin 404 that serves as a limit. When the installation device is working, the T-shaped clamp 107 of the protective sleeve 1 is inserted into the slot a402 of the fixed shaft 4, and then the protective sleeve 1 is rotated 90º clockwise to connect the protective sleeve 1 and the fixed shaft 4 together.

[0053] After the protective sleeve 1 and the fixed shaft 4 are assembled, the front end of the tightening shaft 407 is in a state of extending out of the blind hole 405, so that the protective sleeve 1 can be tightened.

[0054] The push claw part 203 of the elastic push claw body 2 is provided with a tapered hole that cooperates with the tapered part of the protective sleeve 1. The front end face of the push claw part 203 provides a pushing surface 204 for pushing the O-ring forward. The pushing surface 204 is provided with a circle of outer edge. The push claw part 203 is provided with a plurality of grooves b205 evenly distributed around the axis of the push claw part 203 backward along the axial direction of the elastic push claw body 2. The elastic push claw body 2 is provided with an inner hole annular groove 206 at the root of the push claw part 203.

[0055] In order to keep the claw part 203 of the elastic claw body 2 always concentric with the protective sleeve 1 during operation and prevent the O-ring from being skewed or tilted, the opening 201 of the elastic claw body 2 and the outer diameter of the small cylindrical part 104 of the protective sleeve 1 and the fixed shaft 4 are all small clearance matching structures.

[0056] During implementation, firstly assemble a plurality of O-rings 6 on the small tapered body of the protective sleeve 1, then install the T-shaped clamp 107 of the protective sleeve 1 into the slot a402 of the fixed shaft 4 and rotate 90°, at which time the tightening shaft 407 tightens the protective sleeve 1 under the action of the tightening spring 406; at the same time, the front end face of the pushing claw part 203 of the elastic pushing claw body 2 is tightly attached to the end face of the last arranged O-ring 6, and the preparation work is completed;

[0057] Next, the workpiece to be assembled is installed into the inner hole a105 of the protective sleeve 1, and the part of the workpiece where the O-ring 6 is to be installed is roughly aligned with the front end surface of the protective sleeve 1.

[0058] Next, push the elastic push claw body 2 or the fixed shaft 4 with one hand, the elastic push claw body 2 pushes the O-ring and pushes the O-ring 6 out of the protective sleeve 1, so that the O-ring is installed on the workpiece.

[0059] Finally, after installing the O-rings 6 prepared on the installation device, reversely rotate the protective sleeve 1 to disengage the T-shaped clamp 107 from the fixed shaft 4 and remove the protective sleeve 1, and then prepare to install the next set of O-rings 6, and continue to repeat the subsequent assembly work.

[0060] Since the device is subjected to relatively small forces during the assembly process, each part can be made of lightweight materials such as plastic and aluminum to reduce the weight of the entire device, reduce the workload of operators, and achieve continuous operation.

[0061] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A single-handed operation for continuous and rapid assembly of multiple O-ring protection devices, characterized in that: It comprises a protective sleeve (1), a fixed shaft (4), and an elastic push claw body (2); The protective sleeve (1) is mounted on the front side of the fixed shaft (4); the front part of the protective sleeve (1) is a large cylindrical part (101); the rear part of the large cylindrical part (101) transitions to a tapered part; the rear part of the tapered part transitions to a small cylindrical part (104); the front end surface of the protective sleeve (1) is provided with an inner hole a (105) for mounting a workpiece; The elastic push claw body (2) is provided with an opening (201) from the front end to the rear, the fixed shaft (4) is installed in the opening (201) of the elastic push claw body (2), and the fixed shaft (4) and the elastic push claw body (2) move relative to each other back and forth.

2. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 1, characterized in that: It also includes a return spring (3); the return spring (3) and a fixed shaft (4) are installed in the opening (201) of the elastic push claw body (2), the return spring (3) abuts against the rear wall of the opening (201), and the fixed shaft (4) abuts against the front of the return spring (3); The fixed shaft (4) is provided with a through hole a at the rear thereof for the handle (5) to pass through upward and downward, and the elastic push claw body (2) is provided with long slots a (202) at the upper and lower sides thereof for the handle (5) to move forward and backward, and the handle (5) passes through the long slot a (202) and the through hole a in sequence, and the handle (5) and the long slot a (202) are clearance-matched, and the protective sleeve (1) is inserted into the opening (201) of the elastic push claw body (2) and installed at the front end of the fixed shaft (4).

3. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 2, characterized in that: The long groove a (202) is a waist-shaped groove.

4. The one-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 1, characterized in that: It also includes a reset spring (3); the rear end face of the elastic push claw body (2) is provided with a through hole b connected to the open cavity (201); the rear end face of the fixed shaft (4) extends a cylinder b axially backwards, the cylinder b passes through the through hole b and is connected to the pressure rod (7); the reset spring (3) is installed on the cylinder b between the rear end face of the elastic push claw body (2) and the pressure rod (7); the protective sleeve (1) is inserted into the open cavity (201) of the elastic push claw body (2) and installed on the front end of the fixed shaft (4).

5. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 4, characterized in that: The rear part of the elastic push claw body is provided with two symmetrical through holes c, and the through holes c are transitionally equipped with two handles (5).

6. A single-handed operation for continuous and rapid assembly of multiple O-ring protection devices according to any one of claims 1 to 5, characterized in that: The tapered portion is divided into a large tapered portion (103) and a small tapered portion (102); the rear portion of the large cylindrical portion (101) transitions to the small tapered portion (102); the rear portion of the small tapered portion (102) transitions to the large tapered portion (103); and the rear portion of the large tapered portion (103) transitions to the small cylindrical portion (104).

7. A single-handed operation for continuous and rapid assembly of multiple O-ring protection devices according to claim 6, characterized in that: The inner hole a (105) is connected to the inner hole b (106) at the rear, and the inner diameter of the inner hole b (106) is smaller than that of the inner hole a (105).

8. The one-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 7, characterized in that: The small cylindrical portion (104) of the protective sleeve (1) is provided with a T-shaped clamp (107) extending axially backwards, and the front end surface of the fixed shaft (4) is provided with a slot a (402) cut into the T-shaped clamp (107), and the rear of the slot a (402) is a cavity for the T-shaped clamp (107) to rotate one circle, and a stop pin (404) is installed in the front end surface of the fixed shaft (4) to prevent the T-shaped clamp (107) from excessive rotation.

9. A single-handed operation for continuous and rapid assembly of multiple O-ring protection devices according to claim 8, characterized in that: The front end of the fixed shaft (4) further comprises a tightening mechanism, the tightening mechanism being mounted at the rear of the cavity, the rear of the cavity being provided with a blind hole (405) for mounting a tightening shaft (407), a tightening spring (406) and a tightening shaft (407) being mounted in the blind hole (405), the tightening spring (406) being pressed against the rear of the blind hole (405), and the tightening shaft (407) being pressed against the front of the tightening spring (406); The length of the clamping shaft (407) plus the relaxed length of the clamping spring (406) is greater than the depth of the blind hole (405); a waist-shaped hole (408) for a fixing pin (409) to pass through is provided in the middle of the clamping shaft (407); a long slot b for the fixing pin (409) to move forward and backward is provided at a corresponding position of the elastic pushing claw body (2); the fixing pin (409) passes through the elastic pushing claw body (2), the fixing shaft (4) and the clamping shaft (407) in sequence; the fixing pin (409) is clearance-fitted with the elastic pushing claw body (2) and the clamping shaft (407); and the fixing pin (409) is transitionally fit with the fixing shaft (44).

10. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 9, characterized in that: The rear half of the tightening shaft (407) is a cylinder a on which a tightening spring (406) is assembled, and the diameter of the cylinder a is smaller than the diameter of the tightening shaft (407).

11. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 10, characterized in that: After the protective sleeve (1) is installed on the front side of the fixed shaft (4), the tapered portion completely or partially leaks out of the elastic push claw body (2).

12. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 11, characterized in that: The front part of the elastic push claw body (2) is a push claw portion (203), and the push claw portion (203) of the elastic push claw body (2) is provided with a tapered hole that matches the tapered portion of the protective sleeve (1).

13. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 12, characterized in that: The front end surface of the push claw portion (203) provides a push surface (204) for pushing the O-ring forward, and the push surface (204) is provided with an outer edge.

14. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 13, characterized in that: The push claw portion (203) is provided with a plurality of slots b (205) evenly distributed around the axis of the push claw portion (203) along the axis direction of the elastic push claw body (2) and the elastic push claw body (2) is provided with an inner hole annular groove (206) at the root of the push claw portion (203).

15. A single-handed operation and continuous rapid assembly of multiple O-ring protection devices according to claim 14, characterized in that: The long groove b is a waist-shaped groove.

16. A single-handed operation for continuous and rapid assembly of multiple O-ring protection devices according to claim 15, characterized in that: The wall of the inner hole a (105) is ≤1mm.

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