CN207033447U - A kind of portable cutter pick set hydraulic drawing tool - Google Patents

Abstract

The utility model discloses a kind of portable cutter pick set hydraulic drawing tool, including hollow oil cylinder, axostylus axostyle, saddle, outside the hollow oil cylinder there is cylinder body, internal engagement to wear and be connected to axostylus axostyle, the cylinder body right-hand member has Cylinder Plunger, Cylinder Plunger right-hand member installs saddle, the axostylus axostyle from left to right includes thick bar portion, thin rod part, the right part connection Cylinder Plunger in the thick bar portion, and the thin rod part extends to the right one section；The axostylus axostyle left end can connect installation nut, and axostylus axostyle right-hand member can provide power by an axle sleeve connection disassembling nut, the hollow oil cylinder by external impetus mechanism.The utility model is on the premise of assurance function and safety, light-weight design, and one people of operator can be independently installed, independently pulls and installs and be dual-purpose；Ingenious in design, compact, stable performance simple for structure is safe to use, be easy to carry, and can directly be used under mine, save the complicated procedures that prior art pulls out pick box, have very high technical advance and the market competitiveness.

Description

A Portable Coal Mine Pick Set Hydraulic Pulling Tool

technical field

The utility model relates to the maintenance and replacement of the pick cover on the drum of the mining coal mining machine, in particular to a hydraulic drawing tool for the pick cover of the portable coal machine.

Background technique

With the continuous acceleration of the industrialization process, various mechanical engineering products are used in various industries. Among them, the coal mining machine is widely used in the coal mining industry. The coal mining pick sleeve on the shearer drum is replaceable. The original design intention is In order to protect the pick holder, it is a vulnerable part and needs to be replaced after it is worn to a certain extent. However, since most of the pick sleeves are installed on the shearer drum pick holder by cold drawing, once installed , it is difficult to take it out again. The hydraulic drawing tools used by coal mines have problems in terms of weight, quality and use effect. They often cannot be pulled out or the tools are damaged. The applicability is very poor. For the pick sleeve, it is necessary to stop production first, take the shearer drum out of the mine to the maintenance workshop, and cut off the pick sleeve and the pick seat on the shearer drum through cold flame cutting, and then grind it flat. Then weld a new pick holder and pick sleeve. Then transport it back to the mine for work. This method is time-consuming, laborious, labor-intensive, and expensive, and has a great impact on production and operation.

As mentioned above, there are almost no efficient tools in this segment on the market. Therefore, need a kind of structure firm, reasonable design, portable hydraulic drawing tool for the shearer pick sleeve on the shearer drum to meet the needs of the current coal mining machinery field.

Utility model content

Purpose of the utility model: In order to overcome the shortcomings of the prior art hydraulic drawing tool for the shearer drum pick sleeve in terms of design and use effect, the utility model provides a compact and portable hydraulic drawing tool for the shearer pick sleeve , the structural design is ingenious and stable, the parts and structure are firm, and the hydraulic stroke design is reasonable, so as to solve the problems existing in the prior art.

The content of the utility model: a hydraulic pulling tool for a portable coal mining pick sleeve, including a hollow oil cylinder, a shaft, and a saddle. The hollow oil cylinder has a cylinder body on the outside and a shaft rod on the inside. Oil cylinder plunger, the saddle is installed at the right end of the oil cylinder plunger, the shaft includes a thick rod part and a thin rod part from left to right, the right part of the thick rod part is connected to the oil cylinder plunger, and the thin rod part extends to the right a section;

There is a nut at the left end or the right end of the shaft rod, and the hollow oil cylinder is connected with and powered by an external power mechanism.

As a preference, a layer of bushing is fitted around the thin rod portion of the shaft, and a tapered bushing is installed outside the right end of the cylinder. When the shaft sleeve and the tapered sleeve are put on, the utility model can realize the dismounting function, and when not in use, can realize the functional installation function.

Further, the tapered sleeve is screwed to the outside of the right end of the cylinder body, and the saddle is located in the inner area of the tapered sleeve at the right end of the cylinder body. In addition to cushioning, the function of the saddle also has the function of stabilizing the structure. It is also an important connecting structure. Components.

Further, the outer diameter of the sleeve is equal to the outer diameter of the thick rod. The state of the shaft sleeve on the thin rod part is used to disassemble the pick sleeve, and the state of the thick rod part can complete the installation of the pick sleeve. However, the pick sleeve has a fixed inner diameter. To realize disassembly and assembly, the thin rod part The state of the upper bushing and the separate state of the thick rod should have the same outer diameter. This design increases the flexibility of the process and realizes the uniformity of the sleeve during disassembly and assembly, so that the thread of the nut is uniform and the force is also uniform.

Further, the nut includes a detachable nut, and the right end of the sleeve has threads, which can be matedly connected with the detachable nut. The removal nut is installed on the right end of the shaft sleeve during disassembly, and the installation nut is installed on the thick rod part (left end) of the shaft rod during installation.

Preferably, the nut includes a mounting nut, and the left end of the thick rod portion of the shaft has threads, which can be matedly connected with the mounting nut. The dismounting nut is installed on the right end of the shaft sleeve during disassembly, and the installation nut is installed on the thick rod part (left end) of the shaft rod during installation.

Preferably, the hollow oil cylinder is a single-acting hollow oil cylinder. The single-acting hollow oil cylinder reduces the weight, and the power mechanism is a manual pump to save costs. The manual pump is the factory default configuration. It can be operated under the mine or on the ground, and it can also be replaced with an electric pump. The advantages are fast speed and labor-saving. The disadvantage is that it cannot be operated underground, and the operation is relatively convenient.

The beneficial effect of the utility model lies in that the utility model is compact in structure and integrated in disassembly and assembly. In the design, the basic power mode of the oil cylinder and the power mechanism is relatively stable; the shaft rod connected inside the oil cylinder is divided into a thick rod part and a thin rod part, and a shaft sleeve is worn outside the thin rod part, which is even more realized. The pick sleeve can be designed only by using the integrated structure of different parts, and the structure is extremely simple; the nut limits one of the two ends, which is convenient and quick, and the dismounting nut is the main load-bearing part, which simplifies the use method; the selection of parts is all adopted Keep it as simple as possible to save weight and cost. On the premise of ensuring function and safety, the utility model has a lightweight design, and the operator can install it independently, and it can be used for independent pulling and installation; the design is ingenious, the structure is simple and compact, the performance is stable, the use is safe, the whole is easy to carry, and can be It can be used directly in the mine, saves the cumbersome procedure of extracting the tooth seat in the prior art, and has high technological advancement and market competitiveness.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the utility model in the state of installing the pick sleeve, and Fig. 2 is a structural schematic diagram of the utility model in the state of removing the pick sleeve.

In the figure: 1-hollow cylinder, 11-cylinder body, 12-cylinder plunger, 2-shaft, 21-thick rod, 22-thin rod, 3-saddle, 41-installation nut, 42-removal nut , 5-cone sleeve, 6-shaft sleeve, 8-pick seat, 81-pick sleeve mounting hole, 9-pick sleeve.

detailed description

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art, and the drawings in the following description are only the application For some embodiments described in , those skilled in the art can also obtain other drawings based on these drawings without creative work.

Below in conjunction with Fig. 1～2 and specific embodiment, further illustrate the utility model.

As shown in Fig. 1, a kind of hydraulic drawing tool of the pick cover of portable coal mining machine, the pick seat 8 of coal mining machine, the pick cover 9 are typical designs of the prior art, and this is the state of installing the pick cover 9, and the pick cover The hydraulic drawing tool includes a hollow oil cylinder 1, a shaft rod 2, and a saddle 3. The hollow oil cylinder 1 has a cylinder block 11 on the outside and a threaded shaft rod 2 inside. The right end of the cylinder body 11 has a cylinder plunger 12, and A saddle 3 is installed at the right end of the plug 12. The outer diameter of the saddle 3 is smaller than the outer diameter of the right end of the cylinder body 11 and larger than the diameter of the thick rod part 21. The shaft rod 2 includes a thick rod part 21 and a thin rod part 22 from left to right. , the right part of the thick rod part 21 is pierced through the cylinder body 11 and connected to the oil cylinder plunger 12, and the left part extends out of the cylinder body 11, and the thin rod part 22 extends to the right;

The left end of the thick rod part 21 of the shaft rod 2 is threadedly connected with a mounting nut 41. On the right side of the mounting nut 41, the left part of the thick rod part 21 passes through the pick sleeve 8 and the right end of the pick seat 8 sequentially to the left. The pick cover mounting hole 81, the mounting nut 41 limits the inside of the pick cover mounting hole 81, and the hollow oil cylinder 1 is connected with an external power mechanism and powered by it; the hollow oil cylinder 1 is a single-acting hollow oil cylinder 1, The power mechanism (not shown in the figure) is a manual pump or an electric pump. The manual pump is the factory default configuration. It can be operated under the mine or on the ground, and it can also be replaced with an electric pump. The advantage is that it is fast and saves energy. Manpower, the disadvantage is that it cannot work underground.

The operation method of installing the pick sleeve: the manual pump (or other pump station) is used as the power source, pressurized to the single-acting hollow cylinder 1, the shaft rod 2 is connected with the cylinder plunger 12 and connected with the installation nut 41 through the pick sleeve 9 , the mounting nut 41 takes the pick seat 8 as a support point, and as the pumping station continues to work and pressurizes, the oil cylinder plunger 12 is stretched out, the cylinder body 11 is pressed down, and the pick sleeve 9 is pressed into the shearer drum. In tooth seat 8. Due to the sufficient oil cylinder stroke, it can be installed in place within one working stroke, the pressure is relieved, the oil cylinder plunger 12 returns automatically, the mounting nut 41 is removed, and the hollow oil cylinder 1 and shaft rod 2 are pulled out of the pick sleeve 9 to complete. The installation of the second pick cover 9 can be started immediately, and the shaft rod 2 will be passed through the pick cover 9 and the actions thereafter will be repeated. The average installation man-hour of each pick cover 9 needs about 2min.

As shown in Fig. 2, a kind of hydraulic drawing tool of the pick cover of portable coal mining machine, the pick seat 8 and the pick cover 9 of the coal mining machine are typical designs of the prior art, and this is the state of removing the pick cover 9, the pick The set of hydraulic drawing tools includes a hollow oil cylinder 1, a shaft rod 2, and a saddle 3. The hollow oil cylinder 1 has a cylinder body 11 on the outside and a threaded shaft rod 2 inside. The right end of the cylinder body 11 has an oil cylinder plunger 12, and the oil cylinder A saddle 3 is installed at the right end of the plunger 12, and the outside of the right end of the cylinder body 11 is threadedly connected with a tapered sleeve 5. The saddle 3 is located in the inner area of the tapered sleeve 5 at the right end of the cylinder body 11. The right part includes a thick rod part 21 and a thin rod part 22. The right part of the thick rod part 21 is connected to the cylinder body 11 and connected to the cylinder plunger 12, and the left part extends out of the cylinder body 11. The thin rod part 22 is covered with a Layer shaft sleeve 6, the outer diameter of the shaft sleeve 6 is equal to the outer diameter of the thick rod part 21, and the thin rod part 22 extends to the right and passes through the tapered sleeve 5 and the pick sleeve 9;

The right end of the shaft sleeve 6 is threadedly connected with a dismounting nut 42, the right side of the dismounting nut 42, the thin rod portion 22 and the right portion of the shaft sleeve 6 pass through the pick sleeve 9, the left end of the shaft sleeve 6 is connected to the tapered sleeve 5 connection, the pick cover 9 is set in the pick cover installation hole 81 of the pick seat 8, and the nut 42 is disassembled to limit the inside of the pick cover installation hole 81, and the hollow oil cylinder 1 is connected with the external power mechanism and provided by it. Power; the hollow oil cylinder 1 is a single-acting hollow oil cylinder 1, and the power mechanism (not shown in the figure) is a manual pump.

The operation method of removing the pick sleeve: use the manual pump (or other pump station) as the power source, pressurize to the single-acting hollow cylinder 1, the hollow cylinder 1, the tapered sleeve 5, and the shaft sleeve 6 are connected to each other, and the shaft rod 2 is connected to the cylinder column The plug 12 is connected, and passes through the pick sleeve 5 together with the shaft sleeve 6, and the shaft sleeve 6 is connected with the dismounting nut 42, and the joint between the top of the shaft rod 2 and the pick seat 8 is used as the fulcrum, and the pumping station starts to work, pressurize, The cylinder plunger 12 starts to protrude, the shaft rod 2 and the plunger remain still, and other parts protrude outward under the reaction force, and the nut 42 and the shaft sleeve 6 are pulled out with the pick sleeve 9; about half Stroke can extract pick cover 9. Pressure relief, oil cylinder returns automatically, pulls down dismantling nut 42, and hollow oil cylinder 1, shaft rod 2, axle sleeve 6 are separated from the pick sleeve to complete. The disassembly of the second pick sleeve 9 can be started immediately, and the shaft sleeve 6 is passed through the pick sleeve 9 repeatedly and thereafter. The average disassembly time of each pick sleeve 9 needs about 2 minutes.

The above embodiments are only used to illustrate the preferred technical solutions of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements or equivalent replacements made, All are regarded as the protection scope of the utility model, and should still be covered in the scope of claims of the utility model.

Claims (7)

1. a kind of portable cutter pick set hydraulic drawing tool, it is characterised in that described including hollow oil cylinder, axostylus axostyle, saddle Outside hollow oil cylinder there is cylinder body, internal engagement to wear and be connected to axostylus axostyle, the cylinder body right-hand member has Cylinder Plunger, Cylinder Plunger right-hand member Saddle is installed, the axostylus axostyle from left to right includes thick bar portion, thin rod part, and the right part connection Cylinder Plunger in the thick bar portion is described Thin rod part extends to the right one section；

The axostylus axostyle left or right has nut, and the hollow oil cylinder is connected with external impetus mechanism and is provided by it power.

A kind of 2. portable cutter pick set hydraulic drawing tool according to claim 1, it is characterised in that the axostylus axostyle Thin rod part outside be socketed with one layer of axle sleeve, taper sheath is installed on the outside of the right-hand member of cylinder body.

A kind of 3. portable cutter pick set hydraulic drawing tool according to claim 2, it is characterised in that the taper To be threadedly coupled on the outside of set and cylinder body right-hand member, the saddle is located at the taper sheath inner region of cylinder body right-hand member.

A kind of 4. portable cutter pick set hydraulic drawing tool according to claim 2, it is characterised in that the axle sleeve External diameter it is equal with thick bar portion external diameter.

A kind of 5. portable cutter pick set hydraulic drawing tool according to claim 2, it is characterised in that the nut Including dismantling nut, the axle sleeve right-hand member has screw thread, can be connected with dismounting nut.

A kind of 6. portable cutter pick set hydraulic drawing tool according to claim 1, it is characterised in that the nut Including installing nut, the thick bar portion left end of the axostylus axostyle has screw thread, can be connected with installation nut.

7. a kind of portable cutter pick set hydraulic drawing tool according to claim 1, it is characterised in that described hollow Oil cylinder is single-acting hollow oil cylinder.