Rod drawing device of rod mill

Abstract

The invention relates to the technical field of ore grinding equipment, and provides a rod mill rod pulling device which comprises a rotating mechanism used for driving a rod mill to rotate slowly and a clamping mechanism used for pulling out a steel rod in the rod mill, the clamping mechanism comprises a base, a motor, a first bevel gear, a support, a second shaft, a second bevel gear, a sliding block and a pair of clamping pliers, the motor is fixedly connected to the base, and the supporting seat is fixedly connected to the base. The upper end and the lower end of a second shaft are rotationally connected with the upper base and the lower base respectively, the middle of the second shaft is fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, and the upper portion and the lower portion of the second shaft are provided with threads opposite in spiral direction. And the right part of the clamping pliers is rotationally connected with the sliding block. According to the device, mechanization and semi-automation of rod drawing operation are achieved, the working efficiency of the rod drawing operation is greatly improved, therefore, the downtime is shortened, and the productivity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and particularly relates to a steel bar extraction device for a rod mill. Background Art

[0002] A rod mill is a mill in which the grinding medium loaded in the cylinder is steel bars, and is widely used in the grinding operations of non-ferrous metals, ferrous metals and non-metallic ores. It is one of the indispensable important devices in the field of mineral processing. A rod mill mainly consists of a motor, a reducer, a transmission part, a cylinder, a feeding part, a discharging part, etc. The motor is connected to a small gear through the reducer, directly driving the large gear around the cylinder to rotate at a reduced speed, driving the cylinder to rotate. The inside of the cylinder is filled with an appropriate grinding medium - steel bars. The steel bars rise with the rotation of the cylinder and then fall freely under the action of gravity, impacting and abrading the material, so as to realize the grinding of the material, and the product is discharged outside the machine by the force of overflow and continuous feeding for the next process treatment.

[0003] To ensure that the particle size of the discharged material meets the process requirements, it is necessary to select steel bars with appropriate sizes and quantities. When there are too many thick bars, the particle size of the discharged material is too large, and at this time, fine bars need to be added appropriately; when there are too many fine bars, the particle size of the discharged material is too small, and at this time, thick bars need to be added appropriately. In actual production, if the discharged material initially meets the requirements but then becomes uneven, it is very likely that the steel bar ratio is uneven. The machine should be stopped to sort the steel bars, extract the steel bars with inappropriate diameters, and then add steel bars with appropriate diameters and restart the operation.

[0004] However, at present, there is a lack of special steel bar extraction tools in production, and mainly the steel bars are extracted manually by workers. This method has multiple drawbacks. First of all, manual operation will increase the labor intensity of workers, extend the shutdown time, reduce production efficiency, and even pose a safety hazard. Moreover, when the machine is stopped, the cylinder of the rod mill will randomly stop at a certain position, and the steel bars inside the cylinder are also randomly stacked. Workers can only extract the steel bars on the top. If the steel bars to be extracted are squeezed in the middle or lower layer, it is difficult to extract them. At this time, it is necessary to start the machine multiple times to drive the cylinder to rotate, and then try to extract the steel bars with inappropriate diameters on the upper layer after the cylinder rotates. All in all, manual steel bar extraction has a high labor intensity and low efficiency. Therefore, it is very necessary to design a steel bar extraction device for a rod mill. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a steel bar extraction device for a rod mill, which includes a rotating mechanism for driving the rod mill to rotate slowly and a clamping mechanism for extracting the steel bars in the rod mill. The clamping mechanism consists of a base, a motor, a first bevel gear, a support, a second shaft, a second bevel gear, a slider and a clamping pliers. The motor is fixedly connected to the base, and its output shaft is fixedly connected to the first bevel gear. Supports are fixedly connected to the base on the upper and lower sides on the left of the first bevel gear. The upper and lower ends of the second shaft are respectively rotatably connected to the upper and lower bases. The middle part of the second shaft is fixedly connected to the second bevel gear. The second bevel gear meshes with the first bevel gear. Threads with opposite spiral directions are provided on the upper and lower parts of the second shaft, and sliders are threadedly connected thereto. The right part of the clamping pliers is rotatably connected to the slider.

[0006] Further, the rotating mechanism includes a lifting jack, a first shaft, a gear and a hydraulic wrench. The lifting jack is arranged on the working platform in front of the rod mill. The first shaft is rotatably connected to the upper part of the lifting jack. The gear is fixedly connected to the first shaft. The hydraulic wrench is arranged on the left side of the first shaft and meshes with the first shaft.

[0007] Further, it also includes a hook, and the hook is fixedly connected to the clamping mechanism.

[0008] Further, the left part of the clamping pliers is arc-shaped.

[0009] Further, the clamping part of the clamping pliers is barbed.

[0010] Further, the right part of the clamping pliers is "Y"-shaped.

[0011] In addition, the present invention also provides a clamping mechanism, which consists of a housing, an elastic expandable sleeve and an oil pipe. The elastic expandable sleeve is hermetically fixed on the inner wall of the housing. The right end of the housing is four sharp cones. The diameter of the circular hole surrounded by the four sharp cones is larger than the steel bar. The oil pipe connects the elastic expandable sleeve and the hydraulic station.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. Improve work efficiency: By setting the rotating mechanism, the slow rotation and arbitrary stop of the rod mill cylinder can be realized, so as to effectively turn the steel bars in the cylinder, turn the steel bars to be extracted that are squeezed in the middle or lower layer to the upper layer, and facilitate the operators to carry out the steel bar extraction operation. This improvement greatly improves the work efficiency of the steel bar extraction operation.

[0014] 2. Reduce labor intensity: The setting of the clamping mechanism enables the operators to carry out the steel bar extraction operation with the help of the motor, without relying on the hand grip to clamp the steel bar and the arm strength to extract the steel bar. This method effectively reduces the physical burden of the operators and reduces the work intensity.

[0015] 3. Improve safety factor: Manual steel bar extraction has certain safety hazards, such as steel bars slipping and hurting people. The steel bar extraction device of the present invention reduces the direct contact between personnel and steel bars through mechanized and semi-automated operations, reduces the safety risks during the operation process, and provides a safer and more reliable guarantee for production operations.

[0016] 4. Improve production efficiency: Due to the improvement of the steel bar extraction operation efficiency, the downtime is significantly shortened. This means that the rod mill can resume production faster, reducing the production losses caused by equipment downtime, thereby improving the overall production efficiency and production capacity, and bringing higher economic benefits to the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the rotating mechanism of the steel bar extraction device of the rod mill Figure 1 .

[0019] Figure 2 is a schematic structural diagram of the rotating mechanism of the steel bar extraction device of the rod mill Figure 2 .

[0020] Figure 3 is a schematic structural diagram of the clamping mechanism of the steel bar extraction device of the rod mill.

[0021] Figure 4 is a partial structural schematic diagram of the clamping mechanism of the steel bar extraction device of the rod mill Figure 1 .

[0022] Figure 5 is a partial structural schematic diagram of the clamping mechanism of the steel bar extraction device of the rod mill Figure 2 .

[0023] Figure 6 is a schematic structural diagram of another clamping mechanism of the steel bar extraction device of the rod mill.

[0024] Figure 7 is Figure 6 View in the A direction in

[0025] The reference numerals in the drawings are: 101, lifting jack; 102, shaft 1; 103, gear; 104, hydraulic wrench; 201, base; 202, motor; 203, bevel gear 1; 204, support; 205, shaft 2; 206, bevel gear 2; 207, slider; 208, clamping pliers; 209, hook; 210, housing; 211, elastic expandable sleeve; 212, oil pipe; 301, large gear; 302, driving wheel; 303, steel rod. Detailed implementation manners

[0026] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the technical solutions in the specific implementation manners of the present invention are clearly and completely described below to further illustrate the present invention. Obviously, the described specific implementation manners are only a part of the implementation manners of the present invention, rather than all the styles.

[0027] As Figures 1 - 2 shown, the rod mill includes a large gear 301 and a driving wheel 302, with steel rods 303 placed inside. The driving wheel 302 is driven by a driving motor. The rotation of the driving wheel 302 drives the rotation of the large gear 301, thereby driving the steel rods 303 inside the rod mill to rise and then fall to grind minerals.

[0028] The rod extraction device of the rod mill includes a rotating mechanism for driving the rod mill to rotate slowly and a clamping mechanism for extracting the steel rods 303 in the rod mill. As Figures 3 - 5 shown, the clamping mechanism includes a base 201, a motor 202, a bevel gear 1 203, a support 204, a shaft 2 205, a bevel gear 2 206, a slider 207 and clamping pliers 208. The motor 202 is fixedly connected to the base 201, and its output shaft is fixedly connected to the bevel gear 1 203. Supports 204 are fixedly connected to the base 201 on the upper and lower sides on the left of the bevel gear 1 203. The upper and lower ends of the shaft 2 205 are respectively rotatably connected to the upper and lower two bases 201. The middle part of the shaft 2 205 is fixedly connected to the bevel gear 2 206. The bevel gear 2 206 meshes with the bevel gear 1 203. The upper and lower parts of the shaft 2 205 are provided with threads with opposite spiral directions and are threadedly connected with the slider 207. The right part of the clamping pliers 208 is "Y"-shaped and is rotatably connected to the upper and lower ends of the slider 207.

[0029] By driving the bevel gear 1 203 to rotate forward by the forward rotation of the motor 202, the forward rotation of the bevel gear 1 203 drives the bevel gear 2 206 and the shaft 2 205 to rotate forward. The forward rotation of the shaft 2 205 drives the slider 207 to move away from each other, thereby realizing the biting of the clamping pliers 208. Similarly, by driving the bevel gear 1 203 to rotate backward by the reverse rotation of the motor 202, the reverse rotation of the bevel gear 1 203 drives the bevel gear 2 206 and the shaft 2 205 to rotate backward. The reverse rotation of the shaft 2 205 drives the slider 207 to move towards each other, thereby realizing the loosening of the clamping pliers 208. Finally, the clamping or loosening of the steel rods 303 by the clamping pliers 208 is realized.

[0030] To better fit the shape of the steel bar 303, the left part of the clamping pliers 208 is arc-shaped to increase the contact area when the clamping pliers 208 clamp the steel bar 303. At the same time, the clamping part is barbed to increase the friction during clamping.

[0031] The clamping mechanism further includes a hook 209. The hook 209 is fixedly connected to the right side of the base 201. The hook 209 is used to fix the steel wire rope. The other end of the hinge of the steel wire rope is connected to an electric winch. The operator can use the electric winch to replace manual rod extraction, which can greatly reduce the labor intensity.

[0032] As Figures 1 - 2 shown, the rotating mechanism includes a lifting jack 101, a shaft 102, a gear 103 and a hydraulic wrench 104. The lifting jack 101 is arranged on the front working platform of the rod mill. The shaft 102 is rotatably connected to the upper part of the lifting jack 101. The gear 103 is fixedly connected to the shaft 102. The hydraulic wrench 104 is arranged on the left side of the shaft 102 and meshes with the shaft 102.

[0033] During the grinding operation of the rod mill, the lifting jack 101 is in a contracted state, and the gear 103 is disengaged from the large gear 301. When it is necessary to stop the machine and extract the rod, if the steel bar 303 to be extracted is squeezed in the middle or lower layer, the lifting jack 101 is lifted to make the gear 103 mesh with the large gear 301. Then, the hydraulic wrench 104 drives the shaft 102 to rotate, driving the gear 103 to rotate, thereby driving the rod mill cylinder to rotate slowly, making the steel bar 303 inside tumble. The operator observes at the same time. When the steel bar 303 to be extracted tumbles to the upper layer, the hydraulic wrench 104 is turned off, and then the rod extraction operation is carried out. In this way, the problem that it is difficult to extract the steel bar 303 when it is squeezed in the middle or lower layer is solved.

[0034] As Figures 6 - 7 shown is another clamping mechanism, including a housing 210, an elastic expandable sleeve 211 and a oil pipe 212. The elastic expandable sleeve 211 is hermetically fixed on the inner wall of the housing 210. The right end of the housing 210 is four pointed cones. The diameter of the circular hole surrounded by the four pointed cones is slightly larger than the steel bar 303, which is convenient for the clamping mechanism to insert into the head of the steel bar 303. The oil pipe 212 connects the elastic expandable sleeve 211 with the hydraulic station. When it is necessary to extract the rod, the hydraulic station provides hydraulic oil to the elastic expandable sleeve 211, and the elastic expandable sleeve 211 expands, thereby clamping the steel bar 303 and then extracting the steel bar 303.

[0035] The foregoing has described the main technical features, basic principles and related advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary specific embodiments, and that the present invention can be implemented in other specific forms without departing from the concept or basic features of the present invention. Therefore, from any point of view, the above specific embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

[0036] In addition, it should be understood that although this specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rod extraction device for a rod mill, characterized in that: The invention comprises a rotating mechanism for driving a rod mill to rotate slowly and a clamping mechanism for extracting a steel rod (303) in the rod mill. The clamping mechanism comprises a base (201), a motor (202), a bevel gear 1 (203), a support (204), a second shaft (205), a bevel gear 2 (206), a slide block (207) and a clamping pliers (208). The motor (202) is fixedly connected to the base (201), and its output shaft is fixedly connected to the bevel gear 1 (203). The bevel gear 1 (206) is fixedly connected to the base (201). 3) The bases (201) on the left and upper sides are fixedly connected to the supports (204); the upper and lower ends of the second shaft (205) are rotatably connected to the upper and lower bases (201) respectively; the middle of the second shaft (205) is fixedly connected to the second bevel gear (206); the second bevel gear (206) is meshed with the first bevel gear (203); the upper and lower parts of the second shaft (205) are provided with threads with opposite spiral directions, and are threadedly connected to a slider (207); the right part of the clamp (208) is rotatably connected to the slider (207).

2. A rod mill rod extraction device according to claim 1, characterized in that: The rotating mechanism comprises a lifting jack (101), a shaft (102), a gear (103) and a hydraulic wrench (104); the lifting jack (101) is arranged on a working platform at the front side of the rod mill; the shaft (102) is rotatably connected to the upper part of the lifting jack (101); the gear (103) is fixedly connected to the shaft (102); and the hydraulic wrench (104) is arranged on the left side of the shaft (102) and meshes with the shaft (102).

3. The rod mill rod extraction device according to claim 1, characterized in that: It also includes a hook (209), which is fixedly connected to the clamping mechanism.

4. The rod extraction device for a rod mill according to claim 1, characterized in that: The left portion of the clamp (208) is in an arc shape.

5. The rod mill rod extraction device according to claim 1, characterized in that: The clamping portion of the clamping pliers (208) is barbed.

6. The rod mill rod extraction device according to claim 1, characterized in that: The right part of the clamp (208) is "Y" shaped.

7. The rod mill rod extraction device according to claim 1, characterized in that: The clamping mechanism is composed of a shell (210), an elastic expandable sleeve (211) and an oil pipe (212). The elastic expandable sleeve (211) is sealed and fixed on the inner wall of the shell (210). The right end of the shell (210) is four pointed cones. The diameter of the circular hole surrounded by the four pointed cones is larger than that of the steel rod (303). The oil pipe (212) connects the elastic expandable sleeve (211) and the hydraulic station.

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