Mechanical quick-changing device for excavator

Abstract

The utility model provides a mechanical quick change device for an excavator, and belongs to the technical field of mechanical quick change of excavators. The mechanical quick-changing device for the excavator comprises a quick-changing device, a rotating shaft is rotationally installed on the inner wall of the quick-changing device, a positioning hook is fixedly installed at the bottom of the rotating shaft, the number of the quick-changing mechanisms is two, each quick-changing mechanism comprises a gear ring, a limiting shell, a limiting block and a limiting ring, and the gear ring is fixedly arranged on the surface of the rotating shaft in a sleeving mode. According to the quick-changing device, the quick-changing mechanism is arranged, the motor is started, the second gear is driven to rotate, the first gear drives the follow-up rod and the two lead screws to rotate at the same time, through cooperation of the limiting shell, the two limiting blocks drive the limiting ring to move in the opposite directions, the limiting teeth leave gaps of the teeth of the gear ring, and the positioning hook rotates to take down the auxiliary tool; and the motor is reversely started, so that the limiting teeth are inserted into the gaps of the teeth of the gear ring, and the stability of connection between the quick changer and the auxiliary tool is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical quick change of excavators, in particular to a mechanical quick change device for excavators. Background Art

[0002] The excavator mechanical quick change system is a quick-change system for excavator attachments, which allows the excavator to replace different types of working devices or attachments, such as buckets, drilling tools, hydraulic hammers, etc., within a few minutes, thereby improving the versatility and operating efficiency of the excavator.

[0003] When using existing quick connectors, bolts are usually used to connect and disassemble the accessories. However, after long-term use, the bolts are prone to wear, which will cause the accessories to shake during use, affecting the accuracy of construction. In addition, due to the influence of the working environment, the connection between the quick connector and the accessories is prone to dirt and other debris, affecting the judgment of the staff when replacing the accessories. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a mechanical quick-change device for an excavator that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a mechanical quick-change device for an excavator, comprising a quick-change device, a rotating shaft is rotatably mounted on the inner wall of the quick-change device, and a positioning hook is fixedly mounted on the bottom of the rotating shaft.

[0007] The quick-change mechanism is provided with two quick-change mechanisms, and the quick-change mechanism comprises:

[0008] A gear ring, wherein the gear ring is fixedly sleeved on the surface of the rotating shaft;

[0009] A limiting shell, wherein the limiting shell is fixedly mounted on the inner wall of the quick changer;

[0010] A limit block, the limit block is slidably mounted on the inner wall of the limit shell;

[0011] A limiting ring, which is fixedly mounted on the bottom of the limiting block;

[0012] The knocking mechanism is arranged inside the quick changer.

[0013] In a preferred embodiment, the striking mechanism comprises:

[0014] A support rod, the support rod is fixedly mounted on the inner wall of the quick changer;

[0015] The slide rod is slidably sleeved inside the support rod.

[0016] In a preferred solution, screw rods are rotatably mounted on the front and rear sides of the inner wall of the quick changer, the two screw rods are respectively sleeved inside the two limit blocks, and the thread directions of the two screw rods are opposite.

[0017] In a preferred solution, a follower rod is fixedly mounted between the two screw rods, a first gear is fixedly mounted on the surface of the follower rod, and a limiting tooth is fixedly mounted on the inner wall of the limiting ring.

[0018] In a preferred solution, a support block is fixedly mounted on the bottom of the support rod, and a motor is fixedly mounted on the rear side of the support block.

[0019] In a preferred solution, a second gear is fixedly mounted on the output end of the motor, and the first gear is meshingly connected with the second gear.

[0020] In a preferred solution, a transmission shaft is fixedly mounted on the rear side of the second gear, and an impact head is fixedly mounted on the top of the slide rod.

[0021] In a preferred solution, a transmission frame is fixedly mounted on the bottom of the slide rod, a transmission groove is formed on the rear side of the transmission frame, and the transmission groove is sleeved on the surface of the transmission shaft.

[0022] The utility model provides a mechanical quick-change device for an excavator, and its beneficial effects include:

[0023] 1. By setting up a quick-change mechanism, starting the motor, driving the second gear to rotate, the first gear drives the follower rod and the two lead screws to rotate at the same time, and through the cooperation of the limit housing, the two limit blocks drive the limit ring to move in opposite directions, so that the limit teeth leave the gap between the teeth of the gear ring, and the positioning hook rotates to remove the auxiliary tool. On the contrary, the motor is started in the reverse direction to insert the limit teeth into the gap between the teeth of the gear ring, thereby further improving the stability of the connection between the quick changer and the auxiliary tool.

[0024] 2. By setting up a knocking mechanism, when the second gear rotates, it drives the transmission shaft to rotate, causing the inner wall of the transmission groove to be squeezed. Through the cooperation of the support rod, the slide rod drives the transmission frame to reciprocate. Since an impact head is installed on the top of the slide rod, the impact head intermittently strikes the inner wall of the quick changer, so that the quick changer shakes off the soil on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure provided by the implementation method of the utility model;

[0027] Figure 2 A partial cross-sectional view of a quick changer is provided for an embodiment of the utility model;

[0028] Figure 3 A partial cross-sectional view of a left-view quick changer is provided for an embodiment of the utility model;

[0029] Figure 4 Provided for the implementation of the utility model Figure 2 A partial enlarged view of point A in the middle.

[0030] In the figure: 1. quick changer; 2. rotating shaft; 3. positioning hook; 4. gear ring; 5. limiting shell; 6. limiting block; 7. limiting ring; 8. support rod; 9. sliding rod; 10. screw rod; 11. follower rod; 12. first gear; 13. limiting gear; 14. supporting block; 15. motor; 16. second gear; 17. transmission shaft; 18. impact head; 19. transmission frame; 20. transmission groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4The utility model provides a technical solution: a mechanical quick-change device for an excavator, comprising a quick-change device 1, a rotating shaft 2 is rotatably mounted on the inner wall of the quick-change device 1, a positioning hook 3 is fixedly mounted on the bottom of the rotating shaft 2, two quick-change mechanisms are provided, the quick-change mechanism comprises a gear ring 4, a limit shell 5, a limit block 6 and a limit ring 7, the gear ring 4 is fixedly sleeved on the surface of the rotating shaft 2, the limit shell 5 is fixedly mounted on the inner wall of the quick-change device 1, the limit block 6 is slidably mounted on the inner wall of the limit shell 5, and the limit ring 7 is fixedly mounted At the bottom of the limit block 6, the knocking mechanism is arranged inside the quick changer 1, and the front and rear sides of the inner wall of the quick changer 1 are rotatably installed with screw rods 10, the two screw rods 10 are respectively sleeved inside the two limit blocks 6, and the thread directions of the two screw rods 10 are opposite, a follower rod 11 is fixedly installed between the two screw rods 10, and a first gear 12 is fixedly installed on the surface of the follower rod 11, a limit tooth 13 is fixedly installed on the inner wall of the limit ring 7, and a support block 14 is fixedly installed at the bottom of the support rod 8, and the support A motor 15 is fixedly installed on the rear side of the support block 14, and a second gear 16 is fixedly installed on the output end of the motor 15. The first gear 12 and the second gear 16 are meshed and connected. By setting a quick-change mechanism, the motor 15 is started to drive the second gear 16 to rotate. Through the meshing connection of the first gear 12 and the second gear 16, the first gear 12 drives the follower rod 11 to rotate. Through the connection relationship between the follower rod 11 and the two screw rods 10, the two screw rods 10 rotate at the same time. Since the thread directions of the two screw rods 10 are opposite, the two limit blocks 6 drive the limit ring 7 to move in opposite directions through the cooperation of the limit shell 5, so that the limit tooth 13 leaves the gap between the teeth of the gear ring 4. At this time, the hydraulic rod inside the quick changer 1 can be used to drive the positioning hook 3 to rotate and remove the auxiliary tool. On the contrary, the positioning hook 3 reversely starts the hydraulic rod to connect with the auxiliary tool, and reversely starts the motor 15 to insert the limit tooth 13 into the gap between the teeth of the gear ring 4, thereby further improving the stability of the connection between the quick changer 1 and the auxiliary tool.

[0033] Reference Figure 1-4 The knocking mechanism includes a support rod 8 and a slide rod 9. The support rod 8 is fixedly mounted on the inner wall of the quick changer 1. The slide rod 9 is slidably sleeved inside the support rod 8. A transmission shaft 17 is fixedly mounted on the rear side of the second gear 16. A striking head 18 is fixedly mounted on the top of the slide rod 9. A transmission frame 19 is fixedly mounted on the bottom of the slide rod 9. A transmission groove 20 is opened on the rear side of the transmission frame 19. The transmission groove 20 is sleeved on the surface of the transmission shaft 17. By setting the knocking mechanism, when the second gear 16 rotates, it drives the transmission shaft 17 to rotate, causing extrusion on the inner wall of the transmission groove 20. Through the cooperation of the support rod 8, the slide rod 9 drives the transmission frame 19 to reciprocate. Since the striking head 18 is installed on the top of the slide rod 9, the striking head 18 intermittently strikes the inner wall of the quick changer 1, so that the quick changer 1 shakes off the soil on the surface.

[0034] Specifically, the working process or working principle of the mechanical quick-change device for an excavator is as follows: when in use, the motor 15 is started to drive the second gear 16 to rotate, and the first gear 12 drives the follower rod 11 to rotate through the meshing connection between the first gear 12 and the second gear 16. Through the connection relationship between the follower rod 11 and the two screw rods 10, the two screw rods 10 rotate at the same time. Since the thread directions of the two screw rods 10 are opposite, the two limit blocks 6 drive the limit ring 7 to move in opposite directions through the cooperation of the limit housing 5, so that the limit tooth 13 leaves the teeth of the gear ring 4. At this time, the hydraulic rod inside the quick changer 1 can be used to drive the positioning hook 3 to rotate and remove the auxiliary tool. On the contrary, the positioning hook 3 reversely starts the hydraulic rod to connect with the auxiliary tool, and reversely starts the motor 15 to insert the limit tooth 13 into the gap of the teeth of the gear ring 4. When the second gear 16 rotates, it drives the transmission shaft 17 to rotate, causing the inner wall of the transmission groove 20 to be squeezed. Through the cooperation of the support rod 8, the slide bar 9 drives the transmission frame 19 to reciprocate. Since the impact head 18 is installed on the top of the slide bar 9, the impact head 18 intermittently impacts the inner wall of the quick changer 1.

[0035] It should be noted that the motor 15 is a device or equipment existing in the prior art, or a device or equipment that can be realized in the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so they are not described in detail.

Claims

1. A mechanical quick-change device for an excavator, comprising a quick-change device (1), a rotating shaft (2) being rotatably mounted on the inner wall of the quick-change device (1), a positioning hook (3) being fixedly mounted on the bottom of the rotating shaft (2), characterized in that: The quick-change mechanism is provided with two quick-change mechanisms, and the quick-change mechanism comprises: A gear ring (4), wherein the gear ring (4) is fixedly sleeved on the surface of the rotating shaft (2); A limiting shell (5), wherein the limiting shell (5) is fixedly mounted on the inner wall of the quick changer (1); A limit block (6), wherein the limit block (6) is slidably mounted on the inner wall of the limit shell (5); A limiting ring (7), wherein the limiting ring (7) is fixedly mounted on the bottom of the limiting block (6); A knocking mechanism is arranged inside the quick changer (1).

2. The mechanical quick change device for an excavator according to claim 1, characterized in that: The striking mechanism comprises: A support rod (8), wherein the support rod (8) is fixedly mounted on the inner wall of the quick changer (1); A sliding rod (9) is slidably sleeved inside the supporting rod (8).

3. The mechanical quick change device for an excavator according to claim 2, characterized in that: Screw rods (10) are rotatably mounted on the front and rear sides of the inner wall of the quick changer (1), and the two screw rods (10) are respectively sleeved inside the two limit blocks (6), and the thread directions of the two screw rods (10) are opposite.

4. The mechanical quick change device for an excavator according to claim 3, characterized in that: A follower rod (11) is fixedly mounted between the two screw rods (10), a first gear (12) is fixedly mounted on the surface of the follower rod (11), and a limit tooth (13) is fixedly mounted on the inner wall of the limit ring (7).

5. The mechanical quick change device for an excavator according to claim 4, characterized in that: A support block (14) is fixedly mounted on the bottom of the support rod (8), and a motor (15) is fixedly mounted on the rear side of the support block (14).

6. The mechanical quick change device for an excavator according to claim 5, characterized in that: A second gear (16) is fixedly mounted on the output end of the motor (15), and the first gear (12) and the second gear (16) are meshingly connected.

7. The mechanical quick change device for an excavator according to claim 6, characterized in that: A transmission shaft (17) is fixedly mounted on the rear side of the second gear (16), and an impact head (18) is fixedly mounted on the top of the slide bar (9).

8. The mechanical quick change device for an excavator according to claim 7, characterized in that: A transmission frame (19) is fixedly mounted on the bottom of the slide bar (9), a transmission groove (20) is provided on the rear side of the transmission frame (19), and the transmission groove (20) is sleeved on the surface of the transmission shaft (17).

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