Excavator bucket tooth for removing dirt band in thin coal seam

Abstract

The excavator bucket tooth comprises a plurality of tooth holders connected with a bucket and bucket teeth arranged on the corresponding tooth holders in a sleeving mode, the bucket teeth are 10-20 cm longer than existing bucket teeth, clamping grooves are formed in the upper ends and the lower ends of the tooth holders respectively, tensioning assemblies are arranged in the clamping grooves, and installation grooves are formed in the positions, corresponding to the clamping grooves, of the inner sides of the bucket teeth. A threaded hole communicated with the mounting groove is formed in the upper portion, corresponding to the clamping hook, of the bucket tooth, a counterbore is formed in the upper portion of the threaded hole, and a threaded ejector rod is connected into the threaded hole in a threaded mode. Compared with the prior art, the length of the bucket tooth is increased by 10-20 cm, the bucket tooth effectively touches a dirt band at a deeper part in a thin coal seam, meanwhile, the tooth holder is provided with the clamping groove and the tensioning assembly, the clamping hook capable of automatically resetting is arranged in the bucket tooth, the clamping hook is matched with the threaded ejector rod, loosening, falling off or pin shaft deformation in the using process are avoided, meanwhile, the working efficiency is improved, and the service life of the bucket tooth is prolonged. And the phenomenon of hurting people during maintenance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator mechanical device field, concretely relates to a kind of for thin coal seam gangue removal excavator bucket tooth. BACKGROUND

[0002] In the process of coal mining, the mining of thin coal seam has certain difficulty. The gangue removal work in thin coal seam is crucial to improve coal quality and mining efficiency. However, the existing excavator bucket tooth has some deficiencies when used for thin coal seam gangue removal.

[0003] The length of the conventional excavator bucket tooth is short, and the gangue removal effect in thin coal seam is not ideal, which cannot effectively touch the gangue in deep part. In addition, the existing tooth seat and bucket tooth mounting structure is relatively simple, and a pin shaft 15 is usually used to connect and fix between the two (such as shown in FIG. Figure 5 Looseness, falling or pin shaft deformation may occur during long-term use, which affects work efficiency and safety. If the pin shaft is deformed, it usually needs to be knocked out manually with a tool, and it is easy to hurt hand during knocking. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the utility model provides a kind of for thin coal seam gangue removal excavator bucket tooth.

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

[0006] A kind of for thin coal seam gangue removal excavator bucket tooth, including multiple tooth seats connected with shovel and the corresponding tooth seat of its set on bucket tooth, the length of bucket tooth is 10-20cm longer than existing bucket tooth, the upper and lower ends of tooth seat are provided with clamping groove, expansion assembly is arranged in clamping groove, installation groove is set up in the inner side of bucket tooth corresponding to the position of clamping groove, the clamping hook that can be automatically reset is arranged in installation groove, the upper part of the position corresponding to clamping hook of bucket tooth is provided with threaded hole communicated with installation groove, the upper part of threaded hole is provided with counterbore, threaded hole is connected with threaded top rod in screw thread.

[0007] Further, a rotating shaft is supported in the installation groove, and the clamping hook is rotatably connected to the rotating shaft.

[0008] Further, a tension spring is connected to the upper part of the end of the clamping hook, and the other end of the tension spring is fixedly connected to the top of the installation groove.

[0009] Further, the expansion assembly includes a limiting shaft fixedly connected to the side wall of the clamping groove, a expansion block slidably connected to the limiting shaft, and a spring connected between the expansion block and the side wall of the clamping groove.

[0010] Further, a detachable plug is arranged in the counterbore.

[0011] Further, the end of the clamping hook is provided with a circular arc surface.

[0012] Further, the end of the clamping hook is provided with a circular arc surface.

[0013] Compared with the prior art, the utility model has the advantages that: compared with the prior art, firstly, the length of the tooth is increased by 10-20cm, which can effectively touch the deeper part of the thin coal seam, and improve the removal effect. Secondly, the clamping groove is arranged at the upper and lower ends of the tooth holder, and the clamping hook is arranged on the inner side of the tooth, which is matched with the threaded rod, so that the connection between the tooth holder and the tooth is more stable, and the problems of loosening, falling off or deformation of the pin shaft are avoided, the working efficiency and safety are improved, and the manual maintenance and potential hand injury risk are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is Figure 1 a partial enlarged schematic view;

[0016] Figure 3 is a use state schematic view of the utility model;

[0017] Figure 4 is Figure 3 a partial enlarged schematic view;

[0018] Figure 5 is a prior art schematic view;

[0019] In the figure: tooth holder 1, tooth 2, clamping groove 3, mounting groove 4, clamping hook 5, threaded hole 6, counterbore hole 7, rotating shaft 8, tension spring 9, limiting shaft 10, tension block 11, spring 12, plug 13, threaded rod 14. DETAILED DESCRIPTION

[0020] The utility model will be further described in detail in combination with the drawings and specific embodiments:

[0021] As Figure 1 , 2 , 3, 4, a kind of for thin coal seam gangue removal's excavator tooth, including multiple tooth holders 1 connected with shovel and its corresponding tooth holder 1 on the tooth 2 of being placed, tooth 2 is 10-20cm longer than existing tooth length, tooth holder 1 upper and lower ends are respectively provided with clamping groove 3, tension assembly is set in clamping groove 3, installation groove 4 is set in the inner side of tooth 2 corresponding clamping groove 3 position, installation groove 4 is provided with the clamping hook 5 of being able to automatically reset with clamping groove 3 intercoordination, the upper part of tooth 2 corresponding clamping hook 5 position is provided with the threaded hole 6 that is communicated with installation groove 4, counterbore hole 7 is set in the upper part of threaded hole 6, threaded rod 14 is screw-connected in threaded hole 6.

[0022] As shown in Figure 2 , the inside of the installation groove 4 is supported by a rotating shaft 8, and the rotating shaft 8 is rotationally connected with a clamping hook 5.

[0023] As shown in Figure 2 , 4 , the end of the clamping hook 5 is connected with a tension spring 9, and the other end of the tension spring 9 is connected and fixed with the top of the installation groove 4.

[0024] As shown in Figure 2 , 4 , the tensioning assembly includes a limiting shaft 10 fixedly connected with the side wall of the clamping groove 3, a tensioning block 11 slidingly connected with the limiting shaft 10, and a spring 12 connected between the tensioning block 11 and the side wall of the clamping groove 3.

[0025] As shown in Figure 4 , a detachable plug 13 is arranged in the counterbore 7.

[0026] As shown in Figure 2 , 4 , the end of the tensioning block 11 is provided as an inclined surface.

[0027] As shown in Figure 2 , 4 , the end of the clamping hook 5 is provided as a circular surface.

[0028] The implementation principle of the excavator bucket tooth for removing thin coal seam and gangue is:

[0029] When removing the thin coal seam and gangue, the bucket tooth 2 is first sleeved on the tooth holder 1, and after being sleeved, the corresponding clamping hook 5 corresponds to the corresponding clamping groove 3. At this time, the corresponding threaded jacking rod 14 is rotated, and the threaded jacking rod 14 will rotate the clamping hook 5 with the rotating shaft 8 as the center and clamp it in the clamping groove 3. When the clamping hook 5 is clamped in the clamping groove 3, the tensioning block 11 is pushed back, and at the same time the spring 12 is compressed to generate a rebounding force, which will squeeze and fix the tensioning block 11 and the clamping hook 5 clamped in the clamping groove 3, preventing the clamping hook 5 from moving. At the same time, after the clamping hook 5 is clamped in the clamping groove 3, the tension spring 9 is elongated to generate a rebounding force, and due to the circular surface of the head of the clamping hook 5 and the inclined surface of the end of the tensioning block 11, the phenomenon of being stuck when the two are in contact is prevented. After the threaded jacking rod 14 is completely screwed into the counterbore 7, the plug 13 is put in to prevent dust from entering the threaded hole 6 during operation, causing the threaded jacking rod 14 to be unable to rotate. At this time, the installation of the bucket tooth 2 is completed, and the excavating operation can be performed.

[0030] When the bucket tooth 2 needs to be disassembled, the above steps are operated in reverse, when the threaded top rod 14 is screwed in the reverse direction, the elastic force generated by the pull spring 9 can pull the clamping hook 5 back into the mounting groove 4, at this time the bucket tooth 2 can be disassembled, the whole process avoids the problems of loosening, falling off or pin shaft deformation in long-term use, improves the work efficiency and safety, and reduces the manual maintenance and potential hand injury risk.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A excavator bucket tooth for thin coal seam parting removal, comprising a plurality of tooth holders (1) connected with a bucket and a bucket tooth (2) sleeved on the corresponding tooth holder (1), characterized in that: The tooth (2) is 10-20cm longer than the existing tooth, the tooth seat (1) is provided with a clamping groove (3) at the upper and lower ends, respectively, the clamping groove (3) is provided with a tensioning assembly, the inside of the tooth (2) is provided with an installation groove (4) corresponding to the position of the clamping groove (3), the installation groove (4) is provided with a self-resetting clamping hook (5) matched with the clamping groove (3), the upper part of the tooth (2) is provided with a threaded hole (6) corresponding to the position of the clamping hook (5) and communicating with the installation groove (4), the upper part of the threaded hole (6) is provided with a countersunk hole (7), and the threaded hole (6) is threadedly connected with a threaded top rod (14).

2. A bucket tooth for thin coal seam parting removal according to claim 1, characterized in that: The inside of the installation groove (4) is supported with a rotating shaft (8), and the rotating shaft (8) is rotatably connected with the clamping hook (5).

3. A drag bucket tooth for thin coal seam parting removal according to claim 2, characterized in that: The end of the clamping hook (5) is connected with a tension spring (9), and the other end of the tension spring (9) is connected and fixed with the top of the installation groove (4).

4. The excavator bucket tooth for thin coal seam parting rejection of claim 1, wherein: The tensioning assembly comprises a limiting shaft (10) fixedly connected with the side wall of the clamping groove (3), the limiting shaft (10) is slidably connected with a tensioning block (11), and the tensioning block (11) is connected with the side wall of the clamping groove (3) through a spring (12).

5. The excavator bucket tooth for thin coal seam parting rejection of claim 1, wherein: The countersunk hole (7) is provided with a detachable plug (13).

6. A drag for a thin coal seam parting removal excavator bucket tooth according to claim 4, characterized in that: The end of the tensioning block (11) is provided with an inclined surface.

7. A drag bucket tooth for thin coal seam parting removal according to claim 1, characterized in that: The end of the clamping hook (5) is provided with a circular arc surface.

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