Center drill cutting pick seat

Abstract

The utility model discloses a cutting pick holder of a center drill, and relates to the technical field of cutting pick holders. The center drill cutting pick seat comprises a connecting disc and cutting picks, a fixing part is integrally formed on the upper surface of the connecting disc, a quartering head is integrally formed on the outer wall of the fixing part, the quartering head is composed of four branch heads, a hole with the diameter of 25 mm is machined in each branch head, the cutting picks with the cutter handle diameter of 25 mm can be installed in each hole, and the four branch heads are all arranged in an inclined mode. According to the hexagonal transmission shaft, the four branch heads are arranged in the hexagonal transmission shaft and are in a spiral line rising trend, and the four branch heads are all designed to be inclined, so that the cutting range and capacity of the cutting teeth with different radiuses and different angles can be increased when the cutting teeth arranged in the branch heads rotate around the hexagonal transmission shaft; the hexagonal transmission shaft of the 25mm cutting pick quartered head center drill cutting pick seat can be connected with the hexagonal transmission shaft for use, and the spacing distance and the angle between the branch heads can be increased, so that the 25mm cutting pick can be mounted and connected with the hexagonal transmission shaft for use.

Description

Technical Field

[0001] The utility model relates to the technical field of pick seats, in particular to a four-way center drill pick seat. Background Art

[0002] Pick teeth are commonly used tools in mining machinery and piling machinery, mainly used for coal mining, tunneling in roadways and tunnels, and drilling in pile foundation projects. They are mainly equipped with equipment such as shearers, roadheaders, rotary drilling rigs, auger drills, and milling machines. Especially now, with the increasing construction of photovoltaic projects and clean energy infrastructure, a large number of light and multi-functional pile drivers are required.

[0003] In the existing market, the center drill pick seats for pile drivers used in photovoltaic and clean energy infrastructure mostly only have enough space to install 20-mm small pick teeth. They are relatively small in size, with thin tool shanks, poor cutting performance, and a small range of use. When thicker or larger-sized pick teeth are needed for drilling due to various geological conditions during construction, a larger center drill pick seat needs to be replaced. However, when replacing the larger center pick seat, the connecting shaft sleeve of the rotating component on the main machine needs to be disassembled and replaced. Otherwise, the larger center pick seat cannot be connected because the existing 25-mm pick tooth four-way center drill pick seat has a square transmission shaft, and the outer square and the inner hexagon cannot be installed and connected. This requires disassembling and replacing the connecting shaft sleeve on the main machine, and the time and cost spent on disassembling the connecting sleeve are much more than the cost of a single pick tooth center seat itself. This not only increases the replacement time but also reduces the construction efficiency, with low flexibility in use and a significant increase in cost. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and to provide a center drill pick seat that can solve the problem that when a larger center pick seat needs to be replaced during construction, the connecting shaft sleeve on the main machine needs to be disassembled and replaced. Because the transmission shaft of the larger pick tooth center seat is a square transmission shaft, otherwise the larger center pick seat cannot be connected because the outer square and the inner hexagon cannot be installed and connected. The time and cost spent on disassembling and replacing the connecting shaft sleeve on the main machine are much more than the cost of a single pick tooth center seat itself, which not only increases the replacement time but also reduces the construction efficiency, with low flexibility in use and a significant increase in cost. In this way, the dilemma of having to disassemble and replace the main machine shaft sleeve when replacing the larger center drill pick seat is avoided.

[0006] (2) Technical Solutions

[0007] To achieve the above purpose, the present utility model provides the following technical solution: a center drill pick seat, comprising a connection disk and pick teeth. A fixing member is integrally formed on the upper surface of the connection disk, and a four-way head is integrally formed on the outer wall of the fixing member.

[0008] Among them, the four-way head is composed of four split heads, and all four split heads are inclined. By designing all four split heads to be inclined and showing a spiral upward trend, the spacing distance and angle between the split heads can be increased, so that picks with a 25-mm shank can be installed.

[0009] Preferably, all four split heads on the four-way head are provided with pick mounting holes, and all four pick mounting holes are used for installing picks with a 25-mm shank.

[0010] Preferably, a hexagonal transmission shaft is integrally formed on the lower surface of the connecting disk.

[0011] Preferably, a pin hole is provided on the hexagonal transmission shaft, and the hexagonal transmission shaft is used for being fixedly connected by a pin after being assembled with the inner hexagonal bushing of the rotating component of the main machine.

[0012] Preferably, the six surfaces of the hexagonal transmission shaft can increase the friction and torque with the inner hexagonal bushing of the rotating component on the main machine.

[0013] Preferably, the pin hole plays a role in fixing the installation of the hexagonal transmission shaft, improving the firmness of the hexagonal transmission shaft after installation.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1). For this center drill pick holder, by designing all four split heads to be inclined and showing a spiral upward trend, the spacing distance and angle between the split heads can be increased. By designing all four split heads to be inclined, it can increase the cutting range and ability with different radii and different angles when the picks installed in the split heads rotate around the hexagonal transmission shaft, so that picks with a 25-mm shank can be installed. Compared with the existing center drill pick holder that can only install 20-mm picks, this four-way head center drill pick holder can be universal with the inner hexagonal bushing of the main machine of the center pick holder that installs 20-mm picks. There is no need to replace the connecting bushing of the main machine due to replacing two different center drill pick holders, improving the use flexibility of the center drill pick holder.

[0017] (2). For this center drill pick holder, it is fixedly connected to the rotating component on the main machine through the hexagonal transmission shaft. The six surfaces of the hexagonal transmission shaft can increase the friction and torque with the inner hexagonal bushing of the external rotating component on the main machine, improving the stability of the overall center drill pick holder during operation. At the same time, the pin hole plays a role in fixing the installation of the hexagonal transmission shaft, improving the firmness of the hexagonal transmission shaft after installation. Description of the drawings

[0018] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0019] Figure 1 It is a schematic structural diagram of the whole of the present utility model;

[0020] Figure 2 It is a schematic bottom surface upward view of the whole of the present utility model;

[0021] Figure 3 It is a schematic diagram of the surface of the hexagonal transmission shaft of the present utility model.

[0022] Reference numerals: 1, hexagonal transmission shaft; 2, pin hole; 3, connecting plate; 4, pick mounting hole; 5, four-way head; 6, pick; 7, fixing member. Specific embodiments

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the present utility model.

[0025] In the description of the present utility model, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0026] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0027] Please refer to Figures 1-3 , the present utility model provides a technical solution: a center drill pick holder, including a connecting plate 3 and a pick 6. A fixing member 7 is integrally formed on the upper surface of the connecting plate 3, and a four-way head 5 is integrally formed on the outer wall of the fixing member 7;

[0028] Among them, the four-way head 5 is composed of four split heads, and all four split heads are inclined. By designing all four split heads to be inclined, the spacing distance and angle between the split heads can be increased, so that a 25-mm pick 6 can be installed. Compared with the existing center drill pick holder that can only install 20-mm picks, this four-way head center drill pick holder can be universal with the internal hexagonal bushing of the rotating component of the center pick holder host that installs 20-mm picks. There is no need to replace the connecting bushing of the host due to replacing two different center drill pick holders, which improves the flexibility of use of the center drill pick holder.

[0029] Further, all four split heads on the four-way head 5 are provided with pick mounting holes 4, and all four pick mounting holes 4 are used for mounting the 25-mm pick 6 with a tool shank.

[0030] Further, a hexagonal transmission shaft 1 is integrally formed on the lower surface of the connecting disk 3.

[0031] Further, a pin hole 2 is provided on the hexagonal transmission shaft 1, and the hexagonal transmission shaft 1 is used for connecting with the internal hexagonal bushing of the rotating component of the host.

[0032] Further, the six surfaces of the hexagonal transmission shaft 1 can increase the friction and torque with the internal hexagonal bushing of the rotating component on the external host, improving the stability of the overall center drill pick holder during operation. At the same time, the pin hole 2 plays a role in fixing the installation of the hexagonal transmission shaft 1, improving the firmness of the hexagonal transmission shaft 1 after installation.

[0033] Working principle: Connect the hexagonal transmission shaft 1 with the internal hexagonal bushing of the rotating component on the external host. The six surfaces of the hexagonal transmission shaft 1 can increase the friction and torque with the rotating component on the external host. At the same time, the pin hole 2 plays a role in fixing the installation of the hexagonal transmission shaft 1. The four-way head 5 is composed of four split heads, and all four split heads are inclined. By designing all four split heads to be inclined and showing a spiral upward trend, the spacing distance and angle between the split heads can be increased, so that a 25-mm pick 6 can be installed. Compared with the existing center drill pick holder that can only install 20-mm picks, this four-way head center drill pick holder can be universal with the internal hexagonal bushing of the rotating component of the center pick holder host that installs 20-mm picks. There is no need to replace the connecting bushing of the host due to replacing two different center drill pick holders, which improves the flexibility of use of the center drill pick holder.

[0034] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A center drill pick holder, characterized in that: include: Connecting disc (3) and cutting teeth (6); A fixing piece (7) is integrally formed on the upper surface of the connecting plate (3), and a four-point head (5) is integrally formed on the outer wall of the fixing piece (7); The four-branch head (5) is composed of four branches, and the four branches are all inclined. By designing the four branches to be inclined, the spacing between the branches can be increased, so that a 25 mm pick (6) can be installed.

2. A center drill pick holder according to claim 1, characterized in that: The four branches on the four-branch head (5) are all provided with pick tooth installation grooves (4), and the four pick tooth installation grooves (4) are all used for installing 25 mm and 20 mm pick teeth (6).

3. A center drill bit holder according to claim 1, characterized in that: A hexagonal tooth shank (1) is integrally formed on the lower surface of the connecting plate (3).

4. A center drill pick holder according to claim 3, characterized in that: The hexagonal tooth shank (1) is provided with an arc groove (2), and the hexagonal tooth shank (1) is used for connecting with an external screw machine.

5. The center drill bit holder according to claim 3, characterized in that: The six faces of the hexagonal tooth shank (1) can enhance the friction force with the rotating parts on the external screw machine.

6. A center drill bit holder according to claim 4, characterized in that: The arc-shaped groove (2) plays an auxiliary role in the installation of the hexagonal tooth shank (1), thereby improving the firmness of the hexagonal tooth shank (1) after installation.

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