Special wheel assembly for raise-boring cutter head

Abstract

The utility model belongs to the field of raise-boring cutterheads, and particularly discloses a special wheel component for a raise-boring cutterhead, which is characterized in that a tire is rotatably connected with one end of a half-axle type axle, an axle sleeve assembly is sleeved at the other end of the axle, and an axle limiting block for limiting the axial displacement of the axle is arranged between the axle and the axle sleeve assembly; the wheel shaft limiting block is connected with the wheel shaft in a matched mode, the wheel shaft limiting block is fixedly connected with the shaft sleeve assembly, the shaft sleeve assembly is detachably connected with the cutterhead steel plate, the wheel shaft directly stretches into the cutterhead steel plate to serve as a positioning pin, a plurality of heavy opening spring cylindrical pins are attached to the periphery, overall bearing of the wheel set is guaranteed, special long studs do not need to be used any more, and the wheel set is convenient to use. The half shaft wheel set is particularly suitable for the characteristic of thick plate of middle and large raise-boring cutterheads, is simple in structure and convenient to disassemble, can ensure the construction operation efficiency, and greatly reduces the damage probability compared with a traditional half shaft wheel set.

Description

Technical Field

[0001] The utility model belongs to the field of well raising cutter heads, and particularly discloses a wheel assembly specially made for the well raising cutter head. Background Art

[0002] In some modern shaft projects that can create conditions for underground tunnels, the reverse shaft method is often used. That is, the reverse shaft cutter head is lifted by a reverse shaft drilling rig to break the rock from bottom to top. Compared with the traditional vertical shaft construction process, this method has high work efficiency, low work intensity, and certain economy.

[0003] However, the construction of underground tunnels also takes economic efficiency into consideration. Tunnels are usually not particularly spacious, and the raise cutterhead often needs to be detachable to adapt to the narrow space. Medium and large cutterheads are generally required to be able to install wheel sets so that they can be towed and transported by vehicles in narrow tunnels. Although full-axle wheel sets do not need to worry about loosening or falling off of the axles during use, they are laborious to disassemble and have a complex structure, which can easily affect the normal use of the cutterhead and are generally not the preferred option. Although half-axle wheel sets have a simple structure, there is a hidden danger of loosening and falling off of the axles during use, and the half-axle wheel sets currently use multiple extremely long non-standard studs, which are screwed in from top to bottom. By screwing all the threads into place, the anti-loosening and load-bearing effects are achieved. This structure is limited by the thickness and weight of the steel plate, and the studs cannot be too large. Not only is installation and disassembly very laborious, but it is also prone to wire breakage. The entire structure also has poor shear resistance due to the characteristics of the threads, and sudden braking and twisting in the tunnel can easily cause the studs to break. Summary of the Invention

[0004] In order to solve the problems in the background technology, the utility model discloses a wheel assembly specially made for the reverse well cutter disc, which uses the wheel axle to directly extend into the cutter disc as a positioning pin, and is attached with multiple heavy-duty open spring cylindrical pins around it to ensure the overall load-bearing capacity of the wheel set. There is no need to use special long studs. It is particularly suitable for the thick plates of medium and large reverse well cutter discs, is easy to disassemble, and can ensure construction efficiency.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

[0006] A wheel assembly specially made for an inverted well cutter disc includes a tire, which is rotatably connected to one end of a half-axle wheel axle, and a shaft sleeve assembly is provided on the other end of the wheel axle. A wheel axle limit block for limiting the axial displacement of the wheel axle is provided between the wheel axle and the shaft sleeve assembly. The wheel axle limit block is matched with the wheel axle, and the wheel axle limit block is fixedly connected to the shaft sleeve assembly. The shaft sleeve assembly is detachably connected to the cutter disc steel plate.

[0007] Furthermore, the wheel assembly specially made for the reverse well cutter disc is provided with a necked limit groove at one end of the wheel axle adjacent to the wheel axle limit block, and a plurality of raised positioning blocks are arranged in the limit groove at intervals along the circumference of the wheel axle. The inner circular surface of the wheel axle limit block is matched with the positioning groove and the positioning block, and the outer diameter of the outer circular surface of the wheel axle limit block is larger than the outer diameter of the wheel axle.

[0008] Furthermore, the wheel assembly specially made for the reverse well cutter disc, the shaft sleeve assembly includes a connecting plate, a reinforcing rib plate and a sleeve, the connecting plate is an annular structure, the connecting plate is sleeved on the wheel axle limit block, the outer side surface of the connecting plate is detachably connected to the cutter disc steel plate, the inner side surface of the connecting plate is fixedly connected to the reinforcing rib plate, the sleeve is a tubular structure, and a step hole extending along the central axis of the tubular body is provided in the middle of the tubular body, the large-diameter end of the sleeve is fit-fitted and sleeved between the connecting plate and the wheel axle limit block, the small-diameter end of the sleeve is fit-fitted and sleeved on the wheel axle, the outer cylindrical surface of the small-diameter end of the sleeve is fixedly connected to the reinforcing rib plate, and the large-diameter end of the sleeve is fixedly connected to the connecting plate and the wheel axle limit block.

[0009] Furthermore, the wheel assembly specially made for the reverse well cutter disc is connected between the connecting plate and the cutter disc steel plate through a pin shaft and a bolt.

[0010] Furthermore, the wheel assembly specially made for the raise well cutter head, the wheel axle, the connecting plate and the sleeve are coaxially arranged.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model discloses a wheel assembly specially made for an anti-well cutter disc, wherein a tire is rotatably connected to one end of a half-axle wheel shaft, a shaft sleeve assembly is sleeved on the other end of the wheel shaft, a wheel axle limit block for limiting the axial displacement of the wheel axle is provided between the wheel axle and the shaft sleeve assembly, the wheel axle limit block is fixedly connected to the shaft sleeve assembly, the shaft sleeve assembly is detachably connected to the cutter disc steel plate, the wheel axle is directly inserted into the cutter disc steel plate as a positioning pin, and a plurality of heavy-duty open spring cylindrical pins are attached around it to ensure the load-bearing of the entire wheel set, and no special long studs are needed. The utility model is particularly suitable for the thick plates of medium and large anti-well cutter discs, has a simple structure, is easy to disassemble, can ensure construction efficiency, and has a greatly reduced probability of damage compared with traditional half-axle wheel sets. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural diagram of the wheel assembly specially made for the well raising cutter head of the utility model. Figure 1 ;

[0014] Figure 2 This is a three-dimensional structural diagram of the wheel assembly specially made for the well raising cutter head of the utility model. Figure 2 ;

[0015] Figure 3This is a schematic diagram of the internal structure of the wheel assembly specially made for the well raising cutter head of the utility model;

[0016] In the above figure: 1-wheel axle; 2-wheel axle limit block; 3-axle sleeve assembly; 3.1-connecting plate; 3.2-reinforcement rib plate; 3.3-casing; 4-tire; 5-cutter head steel plate; 6-heavy-duty open spring cylindrical pin; 7-clamping bolt. DETAILED DESCRIPTION

[0017] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.

[0018] Combined with attachment Figure 1-3 The utility model is described in detail as a wheel assembly specially made for an inverted well cutter head, including a tire 4, which is rotatably connected to one end of a half-axle wheel shaft 1, and a shaft sleeve assembly 3 is provided on the other end of the wheel shaft 1. A wheel shaft limit block 2 for limiting the axial displacement of the wheel shaft 1 is provided between the wheel shaft 1 and the shaft sleeve assembly 3, and the wheel shaft limit block 2 is matched with the wheel shaft 1. The wheel shaft limit block 2 is fixedly connected to the shaft sleeve assembly 3, and the shaft sleeve assembly 3 is detachably connected to the cutter head steel plate 5. During installation, the wheel shaft 1 is first installed into the shaft sleeve assembly 3, and then the wheel shaft limit block 2 is installed, and the wheel shaft limit block 2 is also installed in the shaft sleeve assembly 3 and welded fixed. Finally, the tire 4 is installed on the wheel axle. When in use, the on-site construction personnel prepare the heavy-duty open spring cylindrical pin 6 and the closing bolt 7, and install the wheel assembly specially made for the anti-well cutter disc of the present invention on the cutter disc steel plate 5 by themselves. The wheel assembly specially made for the anti-well cutter disc of the present invention is used to drive the anti-well cutter disc to move stably. The wheel axle 1 is directly extended into the cutter disc as a positioning pin, and a plurality of heavy-duty open spring cylindrical pins 6 are attached around the cutter disc steel plate 5 and the shaft sleeve assembly 3 to ensure the load-bearing of the entire wheel set. There is no need to use special long studs. The anti-well cutter disc is particularly suitable for the thick plate of medium and large-sized anti-well cutter discs, is easy to disassemble, and can ensure construction efficiency.

[0019] As an optional design, the wheel assembly specially made for the reverse well cutter disc is preferably provided with a limit groove with a necking setting at one end of the wheel axle 1 adjacent to the wheel axle limit block 2, the wheel axle limit block 2 is fixedly connected to the shaft sleeve assembly 3, the wheel axle limit block 2 and the limit groove cooperate to jointly limit the axial displacement of the wheel axle 1, and a number of protruding positioning blocks are arranged at intervals along the circumference of the wheel axle 1 in the limit groove, the inner circular surface of the wheel axle limit block 2 is matched with the positioning groove and the positioning block, and a square notch is formed between adjacent positioning blocks, and a protrusion matching the square notch is provided on the inner circular surface of the wheel axle limit block 2, the positioning block and the wheel axle limit block 2 jointly limit the circumferential displacement of the wheel axle 1 relative to the wheel axle limit block 2, and the outer diameter of the outer circular surface of the wheel axle limit block 2 is larger than the outer diameter of the wheel axle 1.

[0020] As an optional design, the wheel assembly specially made for the reverse well cutter disc is preferred, and the shaft sleeve assembly 3 includes a connecting plate 3.1, a reinforcing rib plate 3.2 and a sleeve 3.3. The connecting plate 3.1 is an annular structure, and the connecting plate 3.1 is sleeved on the wheel axle limit block 2. The outer side of the connecting plate 3.1 is detachably connected to the cutter disc steel plate 5, and the inner side of the connecting plate 3.1 is fixedly connected to the reinforcing rib plate 3.2. The sleeve 3.3 is a tubular structure, and a step hole extending along the axis direction is provided in the middle of the tubular body. The stepped hole is matched with the stepped surface formed by the outer cylindrical surface of the wheel axle limit block 2 and the outer cylindrical surface of the wheel axle 1. The large-diameter end of the sleeve 3.3 is fitted between the connecting plate 3.1 and the wheel axle limit block 2. The large-diameter end of the sleeve 3.3 is welded to the connecting plate 3.1 and the wheel axle limit block 2. The wheel axle limit block 2 is clearance-fitted with the sleeve 3.3. The small-diameter end of the sleeve 3.3 is fitted on the wheel axle 1. The wheel axle 1 and the sleeve 3.3 are interference fit. The outer cylindrical surface of the small-diameter end of the sleeve 3.3 is fixedly connected to the reinforcing rib 3.2.

[0021] As an optional design, a special wheel assembly for the reverse well cutter disc is preferred. The connecting plate 3.1 is connected to the cutter disc steel plate 5 by a pin shaft and a bolt 7. According to the user's construction situation and the working conditions of the construction site, the heavy-duty open spring cylindrical pin 6 can be changed to a solid pin shaft, and the tire can be changed to a high-temperature resistant solid tire, etc. Since the open pin and tire are national standard parts, the user can replace them by himself during use without the need for separate configuration.

[0022] As an optional design, the wheel assembly specially made for the raise well cutter disc is preferred, and the wheel axle 1, connecting plate 3.1 and sleeve 3.3 are coaxially arranged to ensure that the tire 4 can drive the wheel assembly specially made for the raise well cutter disc to drive the raise well cutter disc to move stably through the utility model.

[0023] The working process of this utility model is as follows:

[0024] During installation, first install the wheel axle 1 into the shaft sleeve assembly 3, then install the wheel axle limit block 2, and install the wheel axle limit block 2 in the shaft sleeve assembly 3 and weld it, and finally install the tire 4 on the wheel axle. When in use, the on-site construction personnel prepare the heavy-duty open spring cylindrical pin 6 and the closing bolt 7, and install the wheel assembly specially made for the utility model anti-well cutter disc on the cutter disc steel plate 5 by themselves. When disassembling, remove the heavy-duty open spring cylindrical pin 6 and the closing bolt 7 from the cutter disc steel plate 5 in turn, and use the wheel axle 1 to directly extend into the cutter disc. The inside of the disc serves as a positioning pin, and a number of heavy-duty open spring cylindrical pins 6 are attached around the cutter disc steel plate 5 and the sleeve assembly 3 to ensure the overall load-bearing of the wheel set. There is no need to use special long studs. It is particularly suitable for the thick plates of medium and large reverse well cutter discs. It is easy to disassemble and can ensure construction efficiency. Compared with traditional half-axle wheel sets, the probability of damage is greatly reduced, and the supplier needs to provide fewer special parts. Therefore, the supplier's required processing capacity is also lower, and the level requirements for on-site construction personnel are also lower, taking into account the characteristics of simple structure and easy loading and unloading.

[0025] The above description is only an application implementation method of the present utility model, but the protection scope of the present utility model is not limited to this, and the scope of rights of the present utility model cannot be limited by this. Any equivalent changes made according to the technical solution of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wheel assembly specially made for a well raising cutter head, including a tire, characterized by: The tire is rotatably connected to one end of a half-axle wheel axle, and a shaft sleeve assembly is provided on the other end of the wheel axle. A wheel axle limit block for limiting the axial displacement of the wheel axle is provided between the wheel axle and the shaft sleeve assembly. The wheel axle limit block is matched with the wheel axle, and the wheel axle limit block is fixedly connected to the shaft sleeve assembly. The shaft sleeve assembly is detachably connected to the cutter head steel plate.

2. The wheel assembly specially made for the raise well cutter head according to claim 1 is characterized in that: A limiting groove with a necked design is provided at one end of the wheel axle adjacent to the wheel axle limiting block, and a plurality of protruding positioning blocks are arranged in the limiting groove at intervals along the circumference of the wheel axle. The inner circular surface of the wheel axle limiting block is matched with the positioning groove and the positioning block, and the outer diameter of the outer circular surface of the wheel axle limiting block is larger than the outer diameter of the wheel axle.

3. The wheel assembly specially made for the raise well cutter head according to claim 1 or 2, characterized in that: The shaft sleeve assembly includes a connecting plate, a reinforcing rib plate and a sleeve. The connecting plate is an annular structure and is sleeved on the wheel axle limit block. The outer side surface of the connecting plate is detachably connected to the cutter head steel plate, and the inner side surface of the connecting plate is fixedly connected to the reinforcing rib plate. The sleeve is a tubular structure, and a stepped hole extending along the central axis of the tubular body is provided in the middle of the tubular body. The large-diameter end of the sleeve is fitted between the connecting plate and the wheel axle limit block, and the small-diameter end of the sleeve is fitted on the wheel axle. The outer cylindrical surface of the small-diameter end of the sleeve is fixedly connected to the reinforcing rib plate.

4. The wheel assembly specially made for the raise well cutter head according to claim 3 is characterized by: The connecting plate and the cutter head steel plate are connected via a pin shaft and a coupling bolt.

5. The wheel assembly specially made for the raise well cutter head according to claim 3, characterized in that: The wheel axle, connecting plate and sleeve are coaxially arranged.

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