Operating arm automatic locking mechanism

Abstract

The utility model discloses an operating arm automatic locking mechanism, include: mounting seat, locking pin shaft, spring, handle and pin sleeve, pin sleeve sets up on operating arm, and mounting seat sets up on operating arm mounting seat, and locking pin shaft sets up on mounting seat, and spring cover sets up on locking pin shaft, and handle can drive locking pin shaft and separate pin sleeve, in the process that operating arm is through rotating and approaches operating arm mounting seat, locking pin shaft far from handle one end end portion along the outer surface of pin sleeve and slide, make spring gradually be compressed, when locking pin shaft slides to the pin hole of pin sleeve just above, spring resets, drives locking pin shaft and inserts in pin sleeve. When needing to lock, rotate operating arm, make it to operating arm mounting seat and approach, and locking pin shaft slides along the outer surface of pin sleeve, and make spring gradually compressed, when locking pin shaft slides to the pin hole of pin sleeve just above, spring restores initial state, drives locking pin shaft and inserts in pin sleeve, need not to carry out alignment to realize locking, improve operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tire changer technology, and in particular to an automatic locking mechanism for an operating arm. Background Technology

[0002] The operating arm and mounting base of the tire changer are rotatably connected via a connecting shaft. The secure locking of the operating arm is crucial for ensuring accuracy and safety during installation and removal. Traditional operating arm locking mechanisms require operation for both unlocking and locking. During locking, the locking pin must be precisely aligned with the lower bushing before insertion, a time-consuming and labor-intensive process that negatively impacts work efficiency. Summary of the Invention This utility model provides an automatic locking mechanism for an operating arm to overcome the above-mentioned technical problems.

[0003] To achieve the above objectives, the technical solution of this utility model is as follows: An automatic locking mechanism for an operating arm includes: a mounting base, a locking pin, a spring, a handle, and a pin sleeve; The pin sleeve is mounted on the operating arm, the mounting seat is mounted on the operating arm mounting seat, the locking pin is mounted on the mounting seat, the spring is sleeved on the locking pin, and the handle can drive the locking pin to disengage from the pin sleeve. As the operating arm approaches the operating arm mounting base by rotating, the end of the locking pin away from the handle slides along the outer surface of the pin sleeve, gradually compressing the spring. When the locking pin slides directly above the pin hole of the pin sleeve, the spring returns to its original position, driving the locking pin to insert into the pin sleeve.

[0004] Furthermore, the pin sleeve is frustum-shaped.

[0005] Furthermore, it also includes a guide sleeve, which is vertically fixed on the operating arm mounting base, and a stop portion is provided at the end of the guide sleeve away from the operating arm mounting base; The locking pin is located inside the guide sleeve. The locking pin is a stepped shaft. The large diameter end of the stepped shaft is close to the operating arm. One end of the spring abuts against the stop part, and the other end abuts against the diameter change part of the stepped shaft.

[0006] Furthermore, the mounting base includes a fixed support and a rotating support rotatably connected to the fixed support; The handle is mounted on the rotating support. When the handle is rotated, the handle drives the locking pin to disengage from the pin sleeve via the rotating support.

[0007] Furthermore, the top of the locking pin is provided with a limiting pin hole perpendicular to the axis of the locking pin, and a limiting pin is provided in the limiting pin hole. The top of the rotating support is provided with a through hole, through which the locking pin passes.

[0008] Furthermore, spacers are fitted at both ends of the limiting pin, and a hexagonal sleeve is fitted at the top of the locking pin shaft.

[0009] Beneficial effects: This utility model provides an automatic locking mechanism for an operating arm. The locking pin is disengaged from the pin sleeve via a handle, thus unlocking the operating arm. When locking is required, the operating arm is rotated towards the operating arm mounting base. During this process, the locking pin slides along the outer surface of the pin sleeve, causing the spring to be gradually compressed. When the locking pin slides directly above the pin hole of the pin sleeve, the spring returns to its initial state, thereby driving the locking pin to insert into the pin sleeve. Locking is achieved without the need for alignment, thus improving operational efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This utility model discloses an automatic locking mechanism for an operating arm, which is installed on the operating arm and the operating arm mounting base. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an automatic locking mechanism for an operating arm (excluding the pin sleeve) disclosed in this utility model, which is installed on the operating arm and the operating arm mounting base. Figure 3 This utility model discloses an automatic locking mechanism for an operating arm, which is installed on the operating arm and the operating arm mounting base. Figure 2 ; Figure 4 This is a schematic diagram of the structure of an automatic locking mechanism for an operating arm disclosed in this utility model (excluding the pin sleeve). Figure 5 This is a top view schematic diagram of an automatic locking mechanism for an operating arm disclosed in this utility model; Figure 6 for Figure 5 DD sectional view; Figure 7 This is a schematic diagram of the pin sleeve of an automatic locking mechanism for an operating arm disclosed in this utility model.

[0012] In the picture: 1. Mounting base; 11. Fixed support; 12. Rotating support; 2. Locking pin; 21. Limiting pin hole; 3. Spring; 4. Handle; 5. Pin sleeve; 6. Guide sleeve; 61. Stop part; 7. Limit pin; 8. Spacer sleeve; 9. Hexagonal set; A. Operating arm; B. Operating arm mounting base; C. Connecting shaft. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] This embodiment provides an automatic locking mechanism for an operating arm, such as... Figures 1 to 7 As shown, it includes: mounting base 1, locking pin 2, spring 3, handle 4 and pin sleeve 5; like Figure 2 As shown, the pin sleeve 5 is welded to the operating arm A, the mounting base 1 is set on the operating arm mounting base B, the locking pin 2 is set on the mounting base 1, the spring 3 is sleeved on the locking pin 2, and the handle 4 can drive the locking pin 2 to disengage from the pin sleeve 5. As the operating arm A approaches the operating arm mounting base B by rotating, the end of the locking pin 2 away from the handle 4 slides along the outer surface of the pin sleeve 5, causing the spring 3 to be gradually compressed. When the locking pin 2 slides to the pin hole of the pin sleeve 5, the spring 3 returns to its original position, driving the locking pin 2 to insert into the pin sleeve 5.

[0015] The locking pin 2 is disengaged from the sleeve 5 by the handle 4, thus unlocking the operating arm A; when locking is required, the operating arm A is rotated (e.g., ...). Figure 3 As shown, it rotates about the connecting shaft C during rotation. Figure 3(In the locked state), it moves closer to the operating arm mounting base B. During this process, the locking pin 2 slides along the outer surface of the pin sleeve 5, causing the spring 3 to be gradually compressed. When the locking pin 2 slides directly above the pin hole of the pin sleeve 5, the spring 3 is no longer compressed and returns to its initial state. Thus, the locking pin 2 is driven into the pin sleeve 5 by the elastic force, and the locking function can be achieved without alignment, thereby improving operating efficiency.

[0016] Specifically, such as Figure 7 As shown, the pin sleeve 5 is frustum-shaped. When a locking operation is required, the operating arm A is rotated, the bottom of the locking pin 2 contacts the bottom of the pin sleeve 5, slides along the outer surface of the pin sleeve 5, the bottom of the locking pin 2 rises, the spring 3 is compressed, until the locking pin 2 slides directly above the pin hole of the pin sleeve 5.

[0017] Specifically, such as Figure 4 As shown, the mounting base 1 includes a fixed support 11 and a rotating support 12 rotatably connected to the fixed support 11 via a rotating shaft; The handle 4 is fixed on the rotating support 12 (welded or integrally formed). When the handle 4 is rotated, the handle 4 drives the locking pin 2 to move vertically upward through the rotating support 12, so as to disengage from the pin sleeve 5.

[0018] Specifically, such as Figure 4 As shown, it also includes a guide sleeve 6, which is vertically welded and fixed to the operating arm mounting base B, as shown. Figure 6 As shown, the guide sleeve 6 is provided with a stop 61 at the end away from the operating arm mounting seat B; The locking pin 2 is located inside the guide sleeve 6. The locking pin 2 is a stepped shaft. The large diameter end of the stepped shaft is close to the operating arm A. One end of the spring 3 abuts against the stop part 61, and the other end abuts against the diameter change part of the stepped shaft.

[0019] Press down the handle 4, compress the spring 3, and rotate the support 12 to drive the locking pin 2 to move vertically upward to disengage from the pin sleeve 5 (after disengagement, continue to press down the handle 4 and rotate the operating arm A until the pin sleeve 5 is far away from the locking pin 2 before releasing the handle).

[0020] Specifically, such as Figure 6 As shown, the top of the locking pin 2 is provided with a limiting pin hole 21 perpendicular to the axis of the locking pin 2, and a limiting pin 7 is provided in the limiting pin hole 21. The top of the rotating support 12 is provided with a through hole. After the locking pin 2 passes through the through hole, it is connected to the limiting pin 7 through the limiting pin hole 21, so as to prevent the locking pin 2 from disengaging from the rotating support 12 by the limiting pin 7.

[0021] Specifically, such as Figure 5As shown, spacers 8 are fitted at both ends of the limiting pin 7 (the spacers 8 are prevented from disengaging from the limiting pin 7 by snap rings), and a hexagonal sleeve 9 is fitted at the top of the locking pin 2 (the hexagonal sleeve 9 has a hole that allows the limiting pin 7 to pass through). By setting the spacers 8 and the hexagonal sleeve 9, the locking structure is reinforced.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic locking mechanism for an operating arm, characterized in that, include: Mounting base (1), locking pin (2), spring (3), handle (4) and pin sleeve (5); The pin sleeve (5) is set on the operating arm (A), the mounting seat (1) is set on the operating arm mounting seat (B), the locking pin (2) is set on the mounting seat (1), the spring (3) is sleeved on the locking pin (2), and the handle (4) can drive the locking pin (2) to disengage from the pin sleeve (5). As the operating arm (A) approaches the operating arm mounting base (B) by rotating, the end of the locking pin (2) away from the handle (4) slides along the outer surface of the pin sleeve (5), causing the spring (3) to be gradually compressed. When the locking pin (2) slides to the pin hole of the pin sleeve (5), the spring (3) resets and drives the locking pin (2) to insert into the pin sleeve (5).

2. The automatic locking mechanism for an operating arm according to claim 1, characterized in that, The pin sleeve (5) is frustum shaped.

3. The automatic locking mechanism for an operating arm according to claim 1, characterized in that, It also includes a guide sleeve (6), which is vertically fixed on the operating arm mounting base (B), and a stop (61) is provided at one end of the guide sleeve (6) away from the operating arm mounting base (B). The locking pin (2) is located inside the guide sleeve (6). The locking pin (2) is a stepped shaft. The large diameter end of the stepped shaft is close to the operating arm (A). One end of the spring (3) abuts against the stop (61), and the other end abuts against the diameter change point of the stepped shaft.

4. The automatic locking mechanism for an operating arm according to claim 1, characterized in that, The mounting base (1) includes a fixed support (11) and a rotating support (12) rotatably connected to the fixed support (11). The handle (4) is mounted on the rotating support (12). When the handle (4) is rotated, the handle (4) drives the locking pin (2) to disengage from the pin sleeve (5) through the rotating support (12).

5. The automatic locking mechanism for an operating arm according to claim 4, characterized in that, The top of the locking pin (2) is provided with a limiting pin hole (21) perpendicular to the axis of the locking pin (2), and a limiting pin (7) is provided in the limiting pin hole (21). The top of the rotating support (12) is provided with a through hole, and the locking pin (2) passes through the through hole.

6. The automatic locking mechanism for an operating arm according to claim 5, characterized in that, Both ends of the limiting pin (7) are fitted with spacers (8), and the top of the locking pin (2) is fitted with a hexagonal sleeve (9).

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