Anti-falling cutting pick structure

Abstract

The utility model discloses an anti-drop cutting pick structure, which relates to the technical field of cutting picks and comprises a pick holder, a cutting pick main body for crushing a coal mine and a limiting mechanism arranged on the pick holder and the cutting pick main body are mounted in an inner cavity of the pick holder, and the limiting mechanism is used for providing quick connection for mounting of the pick holder and the cutting pick main body; the limiting mechanism comprises a limiting unit and a guide unit; the limiting unit is used for quickly providing limiting for the connection of the pick holder and the cutting pick main body; and the guide unit is used for providing anti-falling guide for the limiting unit. Through the arrangement of the limiting mechanism, the movement of the limiting block can be limited through the positioning notch, the guide notch and the limiting notch, so that the limiting block is located in the limiting notch, and due to the fact that the stress direction of the tooth holder is generally the vertical direction, the limiting block is always kept to move in the limiting notch in the use process of the tooth holder; and therefore, the mounting and the dismounting are convenient, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pick teeth, in particular to an anti-dropping pick tooth structure. Background Art

[0002] Picks are divided into coal mining machine picks and tunneling machine picks. They are parts of mining and tunneling machines and are used in mining and tunnel construction. The working process of coal mining machine picks is: under the action of the front edge of the pick, the coal is broken and large pieces of peeling are produced at the same time, thereby achieving the tunneling effect.

[0003] In the prior art, the pick is subjected to great stress during use, and the end of the pick is easily worn. The pick needs to be replaced regularly to ensure the efficiency of excavation. The existing installation process generally involves manually hammering the end face of the pick or using an air pump to push pliers or other tools to hammer the pick into the pick body. The disassembly process also requires hammering the pick in the opposite direction to disengage the limit ring of the pick from the retaining ring of the pick body, which is cumbersome to operate. For this reason, the utility model proposes an anti-slip pick structure. Utility Model Content

[0004] The purpose of the utility model is to provide a pick structure that prevents loss of teeth in order to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-dropping pick structure, comprising a tooth seat, the inner cavity of the tooth seat is equipped with a pick body for crushing coal mines, and a limiting mechanism is arranged on the tooth seat and the pick body, and the limiting mechanism is used to provide a quick connection for the installation of the tooth seat and the pick body;

[0006] The limiting mechanism includes a limiting unit and a guiding unit;

[0007] The limiting unit is used to provide a limit for the connection between the tooth seat and the pick body;

[0008] The guide unit is used to provide an anti-slip guide for the limiting unit;

[0009] The limiting unit includes a limiting block;

[0010] The limit block is fixed on the outer wall of the pick body, and the limit block is used to provide a limit for the pick body inserted into the tooth seat;

[0011] The guide unit includes a positioning notch, a guide notch, and a limiting notch;

[0012] The positioning notch is vertically opened in the inner cavity of the gear seat, and the positioning notch is used to provide a vertical guide for the insertion of the limit block;

[0013] The guide slot is transversely opened on the inner wall of the gear seat and communicates with the bottom end of the positioning slot, and the guide slot is used to provide a guide for the rotation of the limit block;

[0014] The limiting slot is vertically opened on the inner wall of the gear seat and is connected with the end of the guide slot. The limiting slot is used to provide a limit for the vertical movement of the limiting block.

[0015] As a further solution of the utility model: the number of the limit blocks is two, and the two limit blocks are symmetrically distributed on the outer wall of the pick body.

[0016] As a further solution of the utility model: the number of the positioning notches, the guide notches and the limiting notches are all set to two, and are circumferentially distributed in the inner cavity of the gear seat.

[0017] As a further solution of the utility model: the outer wall of the guide slot is distributed as a whole at 90 degrees in the inner cavity of the gear seat, and the height of the connecting end of the guide slot and the positioning slot is lower, and the height of the connecting end of the guide slot and the limiting slot is higher.

[0018] As a further solution of the utility model: the insertion ports of the guide slot and the limiting slot are located in the middle of the limiting slot.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] By setting a limiting mechanism, the movement of the limit block can be limited by the positioning slot, the guide slot and the limit slot, so that the limit block is in the limit slot. Since the force direction of the tooth seat is generally in the vertical direction, the limit block always keeps moving in the limit slot during use of the tooth seat and is not easy to enter the guide slot, which facilitates installation and disassembly, further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation structure of the limit block of the utility model;

[0023] Figure 3 It is a cross-sectional view of the internal structure of the pick body of the utility model.

[0024] In the figure: 1, tooth seat; 2, pick body; 3, limiting mechanism; 301, limiting block; 302, positioning notch; 303, guide notch; 304, limiting notch. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 3 In the embodiment of the utility model, an anti-dropping pick structure includes a tooth seat 1, an inner cavity of the tooth seat 1 is installed with a pick body 2 for crushing coal mines, and a limiting mechanism 3 is arranged on the tooth seat 1 and the pick body 2, and the limiting mechanism 3 is used to provide a quick connection for the installation of the tooth seat 1 and the pick body 2;

[0027] The limiting mechanism 3 includes a limiting unit and a guiding unit;

[0028] The limiting unit is used to provide a limit for the connection between the tooth holder 1 and the pick body 2;

[0029] The guide unit is used to provide an anti-slip guide for the limit unit;

[0030] The limiting unit includes a limiting block 301;

[0031] The limit block 301 is fixed on the outer wall of the pick body 2, and the limit block 301 is used to provide a limit for the pick body 2 inserted into the tooth seat 1;

[0032] The guide unit includes a positioning notch 302, a guide notch 303, and a limit notch 304;

[0033] The positioning notch 302 is vertically opened in the inner cavity of the gear holder 1, and the positioning notch 302 is used to provide a vertical guide for the insertion of the limit block 301;

[0034] The guide slot 303 is transversely formed on the inner wall of the gear holder 1 and communicates with the bottom end of the positioning slot 302. The guide slot 303 is used to provide a guide for the rotation of the limit block 301.

[0035] The limiting slot 304 is vertically opened on the inner wall of the gear seat 1 and communicated with the end of the guide slot 303 . The limiting slot 304 is used to provide a limit for the vertical movement of the limiting block 301 .

[0036] In this embodiment, when using this device, the pick body 2 is connected to the inner cavity of the tooth holder 1, so that the limit block 301 on the outer wall of the pick body 2 is aligned with the positioning notch 302 in the inner cavity of the tooth holder 1, and the limit block 301 moves downward along the inner cavity of the positioning notch 302 until the positioning notch 302 contacts the guide notch 303 and the corner of the positioning notch 302. At this time, a rotational force can be given to the pick body 2, so that the pick body 2 drives the limit block 301 to rotate along the inner cavity of the guide notch 303, and the rotating limit block 301 moves to the end of the guide notch 303 and enters the inner cavity of the limit notch 304, so that the limit block 30 1 moves vertically along the inner side of the limiting groove 304, thereby completing the docking of the tooth seat 1 and the pick body 2. During use, the pick body 2 moves vertically along the inner cavity of the limiting groove 304 when in contact with the outside or moving. Since the guide groove 303 is located in the middle position of the limiting groove 304, the maximum moving distance of the pick body 2 under the action of gravity or pressure is the top or bottom of the limiting groove 304. When the pick body 2 is used to crush the coal mine, it will not contact the end of the limiting groove 304 to prevent separation, which is convenient for installation and disassembly of the pick body 2, and further improves the work efficiency.

[0037] Please refer to Figure 1-Figure 3 There are two limit blocks 301, which are symmetrically distributed on the outer wall of the pick body 2. There are two positioning slots 302, two guide slots 303, and two limit slots 304, which are circumferentially distributed in the inner cavity of the tooth seat 1. The outer wall of a guide slot 303 is distributed at a ninety-degree angle in the inner cavity of the tooth seat 1 as a whole. The connecting end of the guide slot 303 and the positioning slot 302 is at a lower height, and the connecting end with the limit slot 304 is at a higher height. The insertion ports of the guide slot 303 and the limit slot 304 are located in the middle position of the limit slot 304.

[0038] In this embodiment: through this structure, since the outer wall of the guide slot 303 is tilted as a whole, when the limit block 301 moves in the inner cavity of the limit slot 304, if it enters the inner cavity of the guide slot 303, then under the action of gravity, the limit block 301 will still enter the inner cavity of the limit slot 304 again to prevent the pick body 2 from detaching.

[0039] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pick structure for preventing from falling off, comprising a tooth seat (1), wherein the inner cavity of the tooth seat (1) is provided with a pick body (2) for crushing coal mines, characterized in that: A limiting mechanism (3) is arranged on the tooth seat (1) and the pick body (2), and the limiting mechanism (3) is used to provide a quick connection for the installation of the tooth seat (1) and the pick body (2); The limiting mechanism (3) comprises a limiting unit and a guiding unit; The limiting unit is used to provide a limit for the connection between the tooth seat (1) and the pick body (2); The guide unit is used to provide an anti-slip guide for the limiting unit; The limiting unit comprises a limiting block (301); The limiting block (301) is fixed on the outer wall of the pick body (2), and the limiting block (301) is used to provide a limiting position for the pick body (2) inserted into the tooth seat (1); The guide unit comprises a positioning notch (302), a guide notch (303), and a limiting notch (304); The positioning notch (302) is vertically opened in the inner cavity of the gear seat (1), and the positioning notch (302) is used to provide a vertical guide for the insertion of the limit block (301); The guide slot (303) is transversely formed on the inner wall of the gear seat (1) and is connected to the bottom end of the positioning slot (302), and the guide slot (303) is used to provide a guide for the rotation of the limit block (301); The limiting slot (304) is vertically opened on the inner wall of the gear seat (1) and is connected to the end of the guide slot (303). The limiting slot (304) is used to provide a limit for the vertical movement of the limiting block (301).

2. The anti-dropping pick structure according to claim 1, characterized in that: The number of the limit blocks (301) is two, and the two limit blocks (301) are symmetrically distributed on the outer wall of the pick body (2).

3. The anti-dropping pick structure according to claim 1, characterized in that: The number of the positioning notches (302), the guide notches (303), and the limiting notches (304) are all two, and they are circumferentially distributed in the inner cavity of the gear seat (1).

4. The anti-dropping pick structure according to claim 1, characterized in that: The outer wall of one of the guide slots (303) is distributed in the inner cavity of the gear seat (1) at a 90-degree angle as a whole. The height of the connecting end of the guide slot (303) with the positioning slot (302) is relatively low, while the height of the connecting end with the limiting slot (304) is relatively high.

5. The pick structure for preventing from falling off according to claim 1, characterized in that: The insertion ports of the guide slot (303) and the limiting slot (304) are located in the middle of the limiting slot (304).

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