A quick-change bucket tooth for a travelling grab

Abstract

The utility model provides a kind of quick replacement's of bucket tooth travelling crane grab, it is related to travelling crane grab technical field, comprising: upper bearing beam, lower bearing beam is equipped in upper bearing beam lower, two symmetrical distribution's grab are rotatably connected between opposite ends of lower bearing beam, the opposite sides of grab close to bottom are respectively fixedly installed with multiple staggered distribution's mounting block, and mounting block one end is equipped with bucket tooth.The kind of travelling crane grab is quickly disassembled and assembled bucket tooth by being set up dismounting mechanism, can be quickly replaced to bucket tooth, avoid travelling crane long time shutdown, single person can complete replacement, without professional personnel, reduce manual input and operating intensity, simultaneously, avoid the security risk brought by improper use of tool.

Description

Technical Field

[0001] This utility model relates to the field of crane grab technology, specifically a crane grab with quick-change bucket teeth. Background Technology

[0002] In the field of industrial material handling, overhead crane grabs are the core equipment for grabbing and transferring bulk materials such as ores, coal, and sand. Their operating efficiency and ease of maintenance directly affect the continuity and economy of the overall production process.

[0003] Currently, in the long-term use of traditional overhead crane grabs, the bucket teeth, as the vulnerable parts that directly contact the material, wear out quickly when grabbing hard and highly abrasive materials. They need to be replaced regularly to ensure grabbing performance. However, the bucket teeth of existing grabs are mostly connected to the grab body by bolts, welding, etc. Replacement requires the use of special tools such as wrenches and gas cutters. The disassembly and installation process is cumbersome, which not only consumes a lot of manual time, but also requires the crane to be stopped for a long time, seriously interrupting production operations and causing a decline in overall production efficiency. Especially in continuous production scenarios such as mines and ports, the economic losses caused by downtime for tooth replacement are even more significant. Utility Model Content

[0004] The purpose of this application is to provide a crane grab with quick-change bucket teeth to solve the technical problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a crane grab bucket with quick-change bucket teeth, comprising: an upper support beam, a lower support beam below the upper support beam, two symmetrically distributed grab buckets being rotatably connected between opposite ends of the lower support beam, and multiple staggered mounting blocks being fixedly installed on opposite sides near the bottom of the grab buckets, each mounting block having bucket teeth at one end; The disassembly and assembly mechanism is located inside the mounting block to facilitate the replacement of the bucket teeth. The disassembly and assembly mechanism includes a connecting block fixedly connected to one end of the grab bucket, and one end of the connecting block inserted into the slot. A square moving groove is opened near the bottom of the mounting block. A guide block is slidably connected inside the moving groove. A locking block is fixedly connected to the top of the guide block. A locking groove that cooperates with the locking block is opened at the bottom of the connecting block.

[0006] Furthermore, one end of the connecting block has an inclined surface a near the bottom, and the other side of the card block has an inclined surface b that works in conjunction with the inclined surface a.

[0007] Furthermore, a pull rod is fixedly connected to the bottom of the guide block, and a spring is sleeved on the outside of the pull rod. The top of the spring abuts against the bottom of the guide block, and the bottom of the spring abuts against the bottom of the moving groove.

[0008] Furthermore, the bottom end of the pull rod extends to the outside of the moving groove and is fixedly connected to a limiting block, the limiting block having a through hole.

[0009] Furthermore, two connectors are fixedly installed on one side of the top of the grab bucket, and a connecting frame is rotatably connected between the two connectors. The top of the connecting frame is connected to the upper support beam.

[0010] The beneficial effects of this utility model are: The advantages of this utility model are that, through the designed disassembly and assembly mechanism, the bucket teeth can be quickly disassembled and assembled without special tools, which facilitates the rapid replacement of the bucket teeth, avoids long-term downtime of the machine, and can be completed by a single person without professional personnel, reducing labor input and operational intensity, while avoiding safety risks caused by improper use of tools. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the grab bucket structure of this utility model.

[0015] Figure 4 This is a half-sectional view of the mounting block structure of this utility model.

[0016] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0017] The following are the labeling elements in the figure: 1. Upper support beam; 11. Lower support beam; 12. Grab bucket; 13. Mounting block; 14. Bucket teeth; 2. Slot; 21. Connecting block; 22. Moving slot; 23. Guide block; 24. Locking block; 25. Locking groove; 26. Inclined surface a; 27. Inclined surface b; 3. Tie rod; 31. Spring; 32. Limiting block; 33. Through hole; 4. Connecting piece; 41. Connecting frame. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] As attached Figure 1 and Figure 2 The crane grab bucket with quick-change bucket teeth shown includes: an upper support beam 1, a lower support beam 11 below the upper support beam 1, two symmetrically distributed grab buckets 12 rotatably connected between opposite ends of the lower support beam 11, multiple staggered mounting blocks 13 fixedly installed on opposite sides near the bottom of the grab buckets 12, and bucket teeth 14 provided at one end of each mounting block 13; and a disassembly and assembly mechanism located inside the mounting block 13 to facilitate the replacement of bucket teeth 14.

[0021] The upper support beam 1 connects the grab bucket 12 to the trolley, transmitting power and displacement commands. It also supports the lower support beam 11 and the grab bucket 12 to ensure the stability of the overall structure. The lower support beam 11 serves as the mounting base for the grab bucket 12, providing a fulcrum for opening and closing rotation, integrating the drive component interface to transmit power, and balancing the force on the grab bucket 12 to prevent tilting. The grab bucket 12 is the component that directly grabs materials and is made of wear-resistant steel to extend its service life. The mounting block 13 can connect to the bucket teeth 14 to achieve a reasonable arrangement of the bucket teeth 14. It also works with the disassembly and assembly mechanism to fix the bucket teeth 14 to prevent loosening. The bucket teeth 14 reduce grabbing resistance and disperse the friction of the grab bucket 12 due to their sharp structure. They can be replaced after wear to reduce equipment maintenance costs. The disassembly and assembly mechanism located in the mounting block 13 can quickly lock or unlock the bucket teeth 14 without complicated tools, shortening the replacement downtime and improving work efficiency.

[0022] As attached Figure 3 , Figure 4 and Figure 5As shown, the disassembly and assembly mechanism includes: a slot 2, a connecting block 21, a moving groove 22, a guide block 23, a locking block 24, and a locking slot 25. One end of the mounting block 13 has a slot 2, and one end of the grab bucket 12 is fixedly connected to the connecting block 21. One end of the connecting block 21 is inserted into the slot 2. A square moving groove 22 is formed near the bottom of the mounting block 13. The guide block 23 is slidably connected inside the moving groove 22. A locking block 24 is fixedly connected to the top of the guide block 23. The bottom of the connecting block 21 has a locking slot. The card slot 25 is used in conjunction with the 24. One end of the connecting block 21 is provided with a slope a26 near the bottom. The side of the card block 24 is provided with a slope b27 that is used in conjunction with the slope a26. The bottom of the guide block 23 is fixedly connected to the pull rod 3. The pull rod 3 is sleeved with a spring 31. The top of the spring 31 abuts against the bottom of the guide block 23. The bottom of the spring 31 abuts against the bottom of the moving groove 22. The bottom end of the pull rod 3 extends to the outside of the moving groove 22 and is fixedly connected to the limit block 32. The limit block 32 is provided with a through hole 33.

[0023] When replacing the bucket tooth 14, a cylindrical disassembly tool is used to insert one end into the through hole 33. Pulling the disassembly tool moves the limiting block 32 downward, and the guide block 23 moves inside the moving groove 22 via the pull rod 3. At the same time, the guide block 23 compresses the spring 31 to compress and store energy, causing the guide block 23 to move the locking block 24 back into the moving groove 22, so that the locking block 24 is removed from the slot 25 to release the fixation of the connecting block 21. Then, the bucket tooth 14 is pulled out, and the connecting block 21 is removed from the slot 2, thus completing the disassembly of the bucket tooth 14. When installing the required bucket tooth 14, the connecting block 21 at one end of the bucket tooth 14 is inserted into the slot 2. When inserted into the slot, the slot 25 and the locking block 24 are opposite each other. Then, the spring 31 of the disassembly tool is released to release the elasticity, pushing the guide block 23 to move upward along the moving groove 22, so that the locking block 24 is inserted into the slot 25, connecting and fixing the connecting block 21, thus completing the installation of the bucket tooth 14.

[0024] In a preferred embodiment, two connectors 4 are fixedly installed on one side of the top of the grab bucket 12, and a connecting frame 41 is rotatably connected between the two connectors 4. The top of the connecting frame 41 is connected to the upper support beam 1.

[0025] Furthermore, the two connectors 4 on one side of the top of the grab bucket 12 serve as connection fulcrums between the grab bucket 12 and the connecting frame 41. The connecting frame 41 can control the two grab buckets 12 to complete the opening and closing action.

[0026] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A crane grab with quick-change bucket teeth, characterized in that, include: The upper support beam (1) is provided below the upper support beam (1), and two symmetrically distributed grab buckets (12) are rotatably connected between the two ends of the lower support beam (11). Multiple staggered mounting blocks (13) are fixedly installed on the opposite sides of the grab buckets (12) near the bottom. Each mounting block (13) has a bucket tooth (14) at one end. The disassembly and assembly mechanism is located inside the mounting block (13) to facilitate the replacement of the bucket teeth (14). The disassembly and assembly mechanism includes a slot (2) at one end of the mounting block (13), a connecting block (21) fixedly connected to one end of the grab bucket (12), one end of the connecting block (21) being inserted into the slot (2), a square moving groove (22) being provided inside the mounting block (13) near the bottom, a guide block (23) being slidably connected inside the moving groove (22), a locking block (24) being fixedly connected to the top of the guide block (23), and a locking groove (25) being provided at the bottom of the connecting block (21) to cooperate with the locking block (24).

2. The crane grab with quick-change bucket teeth according to claim 1, characterized in that, The connecting block (21) has a sloping surface a (26) near the bottom at one end, and the card block (24) has a sloping surface b (27) on one side that works in conjunction with the sloping surface a (26).

3. The crane grab with quick-change bucket teeth according to claim 1, characterized in that, The bottom of the guide block (23) is fixedly connected to a pull rod (3), and a spring (31) is sleeved on the outside of the pull rod (3).

4. The crane grab with quick-change bucket teeth according to claim 3, characterized in that, The top of the spring (31) abuts against the bottom of the guide block (23), and the bottom of the spring (31) abuts against the bottom of the moving groove (22).

5. The crane grab with quick-change bucket teeth according to claim 3, characterized in that, The bottom end of the pull rod (3) extends to the outside of the moving groove (22) and is fixedly connected to the limiting block (32), and the limiting block (32) is provided with a through hole (33).

6. The crane grab with quick-change bucket teeth according to claim 1, characterized in that, Two connectors (4) are fixedly installed on one side of the top of the grab bucket (12). A connecting frame (41) is rotatably connected between the two connectors (4). The top of the connecting frame (41) is connected to the upper support beam (1).

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