Inclined shaft six cubic skip haulage frame support buffer device
By installing inclined support plates and polyurethane rubber buffer blocks on the crossbeam of the inclined shaft skip, the problems of easy breakage of the traction frame and derailment were solved, and the service life of the equipment was extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOSHAN JINCHANGHE MINING CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-23
AI Technical Summary
The inclined shaft skip traction frame is susceptible to impact forces, which can lead to localized breakage. Scratching of the idler rollers can cause derailment accidents. The rails are severely worn, and the service life of the tie frame springs and bearings is short.
An inclined mounting support plate is installed on the crossbeam of the skip. The support plate is equipped with polyurethane rubber buffer blocks and shock-absorbing springs, which are connected by bolts to form a buffer device to reduce the impact force.
Reduce the risk of traction frame breakage, avoid track derailment accidents, extend the service life of rails, and improve the life of traction frame springs and bearings.
Smart Images
Figure CN224394385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of main components of mine hoisting equipment, specifically to a support and buffer device for a six-cubic-meter skip traction frame in an inclined shaft. Background Technology
[0002] In mining production, the inclined shaft skip is an indispensable transportation device. Through its side-discharge design, it can safely and efficiently lift and transport ore, making it a powerful assistant in the mining transportation process. For example, the Chinese utility model patent "A Six-Cubic-Meter Inclined Shaft Skip Traction Frame" (Publication No. CN207312904U) describes a skip comprising a skip box and a traction frame. The traction frame includes a traction arm, a connecting beam, and a traction rope. The connecting beam is located at the front end of the traction arm and perpendicular to it. The skip box is located at the end of the traction arm via a rotating shaft. The traction rope is mounted on the connecting beam. The traction arm includes two symmetrically arranged square steel pipes, and the connecting beam includes a first channel steel and a second channel steel. The traction rope includes a main rope and a safety rope. The main rope is fixed in the middle of the connecting beam. First fixed rope loops are symmetrically arranged on both sides of the skip box, and multiple second fixed rope loops are arranged on the outer sides of both square steel pipes. The beginning of the safety rope is connected to the first fixed rope loop, and the rope body passes through the second fixed rope loops sequentially. The end of the safety rope passes through a peach-shaped ring and is fixed to the main rope. The following problems exist: (1) Due to the frequent impact, the traction frame is prone to local fracture at stress concentration points; (2) When the skip moves up and down in the shaft to the section where the double rail becomes a single rail, there is a change between high and low speeds. The end of the traction frame swings up and down a lot and is prone to scraping the idler roller, causing the idler roller to fall off. Once the idler roller falls off, it will get stuck under the skip at high speed and cause a derailment accident; (3) After the first half of the skip is filled with ore, it moves down 2-3m to fill the second half of the skip with ore. When the skip moves down slowly, the wire rope loosens and the end of the traction frame falls onto the rail surface and slides down. It directly contacts the rail and generates friction. When the daily ore loading reaches about 140 cars, the rail and the end of the traction frame are severely worn, requiring the rail in this part to be replaced every year; (4) The six-legged rear unloading skip is completed instantly when unloading ore. During the skip reset process, a large impact force is generated. The channel steel on both sides of the traction frame falls quickly onto the rail. The impact force causes the service life of the traction frame spring and bearing to be short. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a six-cubic-meter skip traction frame support and buffer device for inclined shafts.
[0004] The specific technical solution of this utility model is as follows:
[0005] A six-cubic-meter skip traction frame support and buffer device for inclined shafts includes an installation support plate that is inclinedly installed on the skip crossbeams on both sides. Several polyurethane rubber buffer blocks are installed on the installation support plate. A slot I is opened on the installation support plate along the length direction. The polyurethane rubber buffer blocks are provided with a retaining strip corresponding to the slot I.
[0006] Furthermore, preferably, the tilt angle α of the mounting support plate is 26°~35°.
[0007] Furthermore, preferably, the top of the polyurethane rubber buffer block has a slot II.
[0008] Furthermore, preferably, it also includes a mounting plate, with the mounting plate disposed between the mounting support plate and the polyurethane rubber buffer block, and a shock-absorbing spring disposed between the mounting plate and the mounting support plate.
[0009] Furthermore, preferably, the connecting bolts pass sequentially through the urethane rubber buffer block, the mounting plate, the shock-absorbing spring, and the mounting support plate, and are tightened with nuts.
[0010] The beneficial effects of this utility model are: reducing the impact force on the traction frame, avoiding crossbeam breakage, preventing the possibility of serious track derailment accidents caused by the skip traction frame scraping against the idler roller and falling off inside the shaft, and increasing the service life of the rails, traction frame springs and bearings after the addition of the support and buffer device. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the installation of the buffer device for the inclined shaft skip traction frame of this utility model, which shows the installation position of the buffer device;
[0012] Figure 2 for Figure 1 At point F in the middle;
[0013] Figure 3 This is a top view of the buffer device;
[0014] Figure 4 for Figure 2 Sectional view along line AA;
[0015] Figure 5 This is a cross-sectional view of the polyurethane rubber buffer block;
[0016] Figure 6 A cross-sectional view of another embodiment with a polyurethane rubber buffer block installed;
[0017] Figure 7 A formal drawing of a buffer device with added shock-absorbing springs in another embodiment is provided, wherein the buffer device is rotated to a horizontal position.
[0018] In the diagram: 1-Fish beam, 2-Mounting support plate, 201-Slot I, 3-Polyurethane rubber buffer block, 301-Clamping strip, 302-Slot II, 4-Connecting bolt, 5-Shock-absorbing spring, 6-Mounting plate. Detailed Implementation
[0019] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1
[0022] like Figures 1 to 5 As shown, a support and buffer device for a six-cubic-meter skip traction frame in an inclined shaft includes mounting support plates 2 installed on the skip crossbeams 1 on both sides of the six-cubic-meter skip traction frame. The mounting support plates 2 are installed at an angle. The skip crossbeams 1 are channel steel profiles, and the mounting support plates 2 are directly welded into the channel of the channel steel. Figure 2 As shown.
[0023] The inclination angle α of the mounting support plate 2 is 28 degrees, which is set according to the running angle of the skip in a 28° inclined shaft. According to the "Mining Engineering Design Manual", when skip hoisting is used for inclined shaft development, the inclination angle of the inclined shaft is 26°~35°.
[0024] A polyurethane rubber buffer block 3 is installed on the mounting support plate 2. It is installed and fastened with connecting bolts 4. After the connecting bolts 4 pass through the polyurethane rubber buffer block 3, the lower end passes through the reserved passage of the mounting support plate 2 and is then tightened with nuts.
[0025] Furthermore, to ensure a tight fit between the polyurethane rubber buffer block 3 and the mounting support plate 2, and to prevent the polyurethane rubber buffer block 3 from shifting and sliding due to loose nuts, a slot I201 is provided on the mounting support plate 2 along the length direction. The polyurethane rubber buffer block 3 is provided with a retaining strip 301 corresponding to the slot I201, and the retaining strip 301 is inserted into the slot I201.
[0026] After installing the support and buffer device, the company found that it effectively prevented the possibility of serious accidents such as skip derailment caused by the skip traction frame scraping against the idler rollers and falling off inside the shaft. With a daily ore loading volume of approximately 140 cars, the rails and traction frame ends previously required annual replacement due to severe wear. Now, this section of the rails no longer needs replacement for many years; the service life of the tie rod springs and bearings has increased by approximately 8 months, and the service life of welds in various parts of the skip has been extended by approximately 6 months. Example 2
[0027] The difference between this embodiment and embodiment 1 is that the top of the polyurethane rubber buffer block 3 has a slot II 302. When the first polyurethane rubber buffer block 3 is worn or its height is insufficient, another block can be added on top of it. The bottom of the second polyurethane rubber buffer block 3 has a locking strip 301 that can be inserted into the top slot II 302 of the first polyurethane rubber buffer block 3, so that the two polyurethane rubber buffer blocks 3 are not easily misaligned during use.
[0028] Of course, the top slot II 302 of the polyurethane rubber buffer block 3 can be pre-cut. If the top of the polyurethane rubber buffer block 3 is worn, resulting in an uneven top or insufficient depth of the slot II 302, it can be disassembled, and the worn top of the polyurethane rubber buffer block 3 can be re-milled and the slot II 302 can be machined. This is common sense. Alternatively, when the first polyurethane rubber buffer block 3 is worn or its height is insufficient, and it is necessary to add more to it, it can be disassembled and the slot II 302 can be cut. This embodiment only shows the structure and connection relationship. As for which method to use, those skilled in the art can flexibly adjust it as needed, which does not require mental labor. Example 3
[0029] The difference between this embodiment and embodiment 1 is that it also includes a mounting plate 6. The mounting plate 6 is provided between the mounting support plate 2 and the polyurethane rubber buffer block 3. That is, the polyurethane rubber buffer block 3 is no longer directly mounted on the mounting support plate 2. The lower part of the polyurethane rubber buffer block 3 is first connected to the mounting plate 6, and then a shock-absorbing spring 5 is provided between the mounting plate 6 and the mounting support plate 2. The shock-absorbing spring 5 is a compression spring. The connecting bolt 4 passes through the polyurethane rubber buffer block 3, the mounting plate 6, the shock-absorbing spring 5 and the mounting support plate 2 in sequence, and is tightened by nuts. Of course, when the bottom surface of the polyurethane rubber buffer block 3 is first connected to the mounting plate 6, a slot I201 can also be opened on the mounting plate 6 to facilitate the installation of the retaining strip 301 on the bottom surface of the polyurethane rubber buffer block 3.
[0030] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A six-cubic-meter skip traction frame support and buffer device for an inclined shaft, characterized in that, It includes an installation support plate (2) that is inclinedly installed on the crossbeams (1) of the two sides of the skip. Several polyurethane rubber buffer blocks (3) are installed on the installation support plate (2). The installation support plate (2) has a slot I (201) along the length direction. The polyurethane rubber buffer block (3) is provided with a clip (301) corresponding to the slot I (201).
2. The inclined shaft six-cubic-meter skip traction frame support and buffer device according to claim 1, characterized in that: The tilt angle α of the mounting support plate (2) is 26°~35°.
3. A six-cubic-meter skip traction frame support and buffer device for inclined shafts according to claim 1 or 2, characterized in that, The top of the polyurethane rubber buffer block (3) has a slot II (302).
4. A six-cubic-meter skip traction frame support and buffer device for inclined shafts according to claim 1 or 2, characterized in that, It also includes a mounting plate (6), which is provided between the mounting support plate (2) and the polyurethane rubber buffer block (3), and a shock-absorbing spring (5) is provided between the mounting plate (6) and the mounting support plate (2).
5. The inclined shaft six-cubic-meter skip traction frame support and buffer device according to claim 4, characterized in that, The connecting bolt (4) passes through the urethane rubber buffer block (3), the mounting plate (6), the shock-absorbing spring (5) and the mounting support plate (2) in sequence, and is tightened by nuts.