Front pull rod and pull rope adjusting device for dumping boom of dumping plough

Abstract

A digging rope adjusting device for a front pull rod of a dumping boom of a dumping plough comprises a first connecting assembly (21) and a second connecting assembly (22) which are hinged to each other, the first connecting assembly (21) is matched with a steel wire rope (1), and the technical key point is that the relative distance between the first connecting assembly (21) and the second connecting assembly (22) is adjusted through a second rotating shaft (213), and the first connecting assembly (21) and the second connecting assembly (22) are in interference fit. The distance between the first connecting assembly and the second connecting assembly is adjusted by arranging the connecting shaft, so that the cantilever crane is always located at a theoretical mounting position, and the cantilever crane has the advantages of simple and compact structure, convenience in use and the like.

Description

Technical Field

[0001] The present invention relates to an open-pit mine dumper, in particular to a dumper discharging arm front pull rod rope adjusting device, which may be classified under the IPC classification number B65G33 / 00. Background Art

[0002] Existing rope adjustment devices, such as the "Device for Adjusting the Verticality of the Guying Tower and the Tension of the Guying Rope" disclosed in the invention patent application with publication number CN118793320A, are installed between the bottom end of the rope and the basket bolt, and include an installation frame consisting of an upper tensioning assembly, a lower tensioning assembly and two pull rods, a hollow hydraulic jack and a force sensor fixedly sleeved on the bottom end of the pull rod, and the basket bolt is located in the space enclosed by the upper and lower tensioning assemblies and the two pull rods. The upper tensioning assembly can be movably sleeved on the top end of the pull rod, and the bottom end of the rope passes through the upper tensioning assembly and is connected to the upper screw of the basket bolt through a joint. The lower tensioning assembly is fixedly sleeved on the bottom end of the pull rod and fixedly connected to the lower screw of the basket bolt. The hollow plunger of each hollow hydraulic jack extends out of or retracts into the cylinder from the side of the cylinder facing the foundation, and the hollow plunger is fixedly connected to the bottom end of the pull rod.

[0003] For example, the "elevator and its wire rope tension adjustment device" disclosed in the utility model patent with publication number CN205045651U is detachably connected to one end of the rope head of the wire rope, and the rope head includes a pull rod, an elastic member, an elastic member fixing seat, and a fixing member. The wire rope tension adjustment device includes a hydraulic cylinder detachably connected to the rope head of each wire rope, and the hydraulic cylinder includes a plunger threadedly connected to the upper end of the pull rod and a sleeve sleeved on the upper part of the pull rod and supported on the elastic member fixing seat. The upper part of the pull rod, the fixing member and the plunger are movably arranged in the sleeve; the plunger and the sleeve are sealed to form an inner cavity into which a hydraulic medium can be injected, and the sleeve is provided with an oil nozzle connected to the inner cavity; the lower side of the sleeve has a notch exposing the fixing member.

[0004] For open-pit mining equipment, the discharge boom of a mine dumper can experience significant fluctuations in its theoretical installation position during long-term operation due to the flexible wire rope in the front pull rod, making it difficult to return to the theoretical position. This not only affects the dumper's operating efficiency but can also lead to equipment damage and safety hazards. Summary of the Invention

[0005] The purpose of the present invention is to provide a front pull rod and rope adjustment device for the discharge arm of a soil discharger, which adjusts the distance between the first connecting component and the second connecting component by setting a connecting shaft, thereby ensuring that the arm is always in the theoretical installation position. It has the advantages of simple and compact structure and easy use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the front pull rod rope adjustment device of the earthmoving machine discharge arm includes a first connecting component and a second connecting component that are hinged to each other, and the first connecting component cooperates with the wire rope. The technical point is: the relative distance between the first connecting component and the second connecting component is adjusted through a second rotating shaft, and an interference fit is achieved.

[0007] Furthermore, the first connecting assembly includes a pair of first steel plates, a first rotating shaft penetrating and limited at the front end of the first steel plates, and a second rotating shaft penetrating and limited at the rear end of the first steel plates; The second connecting assembly includes a pair of second steel plates, a third rotating shaft that passes through and is limited at the rear end of the second steel plates, a fourth steel plate vertically fixed between the front ends of the first steel plates, a hydraulic cylinder fixed on the fourth steel plate, and a rotating shaft support that is arranged at the output end of the hydraulic cylinder and cooperates with the second rotating shaft. The second rotating shaft passes through and is limited at the front end of the second steel plate to enable the first connecting assembly and the second connecting assembly to be hingedly matched.

[0008] The beneficial effects of the present invention are as follows: the pull rod column of the discharge arm (not shown in the figure) is connected to the rotation center hinge through a hydraulic cylinder to maintain horizontality. Since the steel wire rope in the pull rod column is a flexible body (not marked in the figure), the position of the arm varies from the theoretical installation position to a certain extent. Therefore, it is necessary to adjust the arm back to the theoretical installation position through the hydraulic cylinder in the pull rope adjustment device.

[0009] The adjustment process is simple and convenient, without the need for specialized tools. The positioning and locking mechanism ensures that the adjusted pull rod is accurately positioned, avoiding equipment failures due to positional offset. The device has a compact structure and is easy to install and maintain, making it suitable for the complex environments of various open-pit mines. Regular adjustments can extend the service life of the wire rope and pull rod, reducing equipment maintenance costs.

[0010] In summary, the present invention can adjust the length of the wire rope, thereby achieving the purpose of adjusting the boom back to the theoretical position, providing a strong guarantee for the production of the open-pit mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a reference diagram of the present invention in use.

[0012] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle rope adjustment device.

[0013] Figure 2a for Figure 2 Schematic diagram of the cross-sectional structure along line AA.

[0014] Figure 2b for Figure 2a Schematic diagram of the cross-sectional structure along line BB.

[0015] Figure 2c for Figure 2a Schematic diagram of the cross-sectional structure along line CC.

[0016] Figure 3 for Figure 1 Isometric structural diagram of the center rope adjustment device. DETAILED DESCRIPTION

[0017] The following combination Figures 1-3 , the specific contents of the present invention are described in detail through specific embodiments.

[0018] like Figure 1 As shown, the bottom of the pull rod column 4 (the wire rope in the pull rod column 4 is a flexible body) is hinged to one of the boom ear plates 3, and a column connecting plate 41 is set on the top of the pull rod column 4. The two hinge points on the column connecting plate 41 are connected to the other two boom ear plates 3 through wire ropes 1 respectively. In order to facilitate the adjustment of the wire ropes 1, a rope adjustment device 2 is also provided between each wire rope 1 and the boom ear plate 3, which is used to adjust the boom back to the theoretical installation position.

[0019] The front pull rod rope adjustment device of the earthmoving machine discharge arm includes a first connecting component 21 and a second connecting component 22 that are hinged to each other. The relative distance between the first connecting component 21 and the second connecting component 22 can be adjusted through the second rotating shaft 213 of the hinge shaft to achieve interference fit.

[0020] like Figure 2 、 Figure 2a 、 Figure 3 As shown, the first coupling assembly 21 includes a pair of first steel plates 211, a first rotating shaft 212 extending through and restrained at the front end of the first steel plates 211, and a second rotating shaft 213 extending through and restrained at the rear end of the first steel plates 211. The first rotating shaft 212 is supported and fitted between the first steel plates 211 via a first rotating shaft sleeve 2122. A first end cap 2121 is secured to each end of the first rotating shaft 212 via a plurality (e.g., four sets) of M16 bolts and washers. The first end cap 2121 is larger than the opening in the first steel plates 211 to prevent unexpected axial movement of the first rotating shaft 212 during rotation. To facilitate installation of the wire rope 1, the first rotating shaft sleeve 2122 is integrally formed with the fixed end of the wire rope 1, such as by welding. Similarly, the second rotating shaft 213 is fixed with a second end cover 2131 at both ends by (for example, four sets of) M16 bolts and washers. The second end cover 2131 is larger than the opening of the first steel plate 211 to prevent the second rotating shaft 213 from unexpectedly moving axially during rotation.

[0021] like Figure 2b 、 Figure 2c 、 Figure 3As shown, the second coupling assembly 22 includes a pair of second steel plates 221, a third rotating shaft 222 extending through and positioned at the rear ends of the second steel plates 221, a fourth steel plate 226 vertically fixed between the front ends of the first steel plates 211, a hydraulic cylinder 223 fixed to the fourth steel plate 226, and a rotating shaft support 228 disposed at the output end of the hydraulic cylinder 223 and engaged with the second rotating shaft 213. The second rotating shaft 213 extends through and positions the front ends of the second steel plates 221, thereby articulating the first coupling assembly 21 with the second coupling assembly 22. The third rotating shaft 222 is restrained between the second steel plates 221 by a pair of third rotating shaft sleeves 2222. The boom lug 3 is restrained between the third rotating shaft sleeves 2222, with one end of the boom lug 3 sleeved onto the third rotating shaft 222. Third end caps 2221 are fixed to each end of the third rotating shaft 222 to prevent unintended axial movement of the third rotating shaft 222 during rotation.

[0022] The front end of the second steel plate 221 (i.e., the portion located inside the first steel plate 211) is supported by a third steel plate 225 and a fourth steel plate 226, which are welded together perpendicularly. The third steel plate 225 extends in the length direction, and the fourth steel plate 226 extends in the width direction. The second connecting plate 23 is fixed to the outer wall of the second steel plate 221 using M12 bolts and washers. The hydraulic cylinder base 224 is fixed to the second connecting plate 23 using M12 bolts, nuts, and washers. A first connecting plate 24 is also provided on the outer wall of the first steel plate 211. The first connecting plate 24 is bolted to the first steel plate 211 using M12 bolts and washers to prevent the first positioning block 217, the second positioning block 218, the first adjustment block 215, and the second adjustment block 216 from moving axially. The first positioning block 217 is locked with the second steel plate 221 , the second positioning block 218 is locked with the second end cover 2131 , and the first adjustment block 215 and the second adjustment block 216 fill the gap between the first positioning block 217 and the second positioning block 218 , thereby locking the second rotating shaft 213 .

[0023] The hydraulic cylinder base 224 is supported between the second steel plates 221 through a connecting plate. The hydraulic cylinder 223 is installed on the hydraulic cylinder base 224. One end of the hydraulic cylinder 223 is a rotating shaft support 228, and the other end is installed with a first adjustment plate 227 and a second adjustment plate 229 for adjusting the distance between the third steel plate 225 and the hydraulic cylinder 223.

[0024] Working principle: When the wire rope 1 needs to be adjusted, the hydraulic cylinder 223 pushes the shaft support 228 to the right. Since the left end of the hydraulic cylinder 223 is supported by the third steel plate 225 and the fourth steel plate 226, the shaft support 228 pushes the first connecting component 21 to the right as a whole by pushing the second shaft 213, and increases the number of the first adjustment block 215 and the second adjustment block 216 in the gap between the first positioning block 217 and the second positioning block 218, so that the outer end of the first positioning block 217 (close to the inner wall end of the second steel plate 221) is locked, and finally the function of adjusting the wire rope 1 is achieved.

[0025] Description of reference numerals: 1 wire rope; 2. Pull rope adjustment device, 21. First connecting assembly, 211. First steel plate, 212. First rotating shaft, 2121. First end cover, 2122. First rotating shaft sleeve, 213. Second rotating shaft, 2131. Second end cover, 215. First adjusting block, 216. Second adjusting block, 217. First positioning block, 218. Second positioning block, 22. Second connecting assembly, 221. Second steel plate, 222. Third rotating shaft, 2221. Third end cover, 2222. Third rotating shaft sleeve, 223. Hydraulic cylinder, 224. Hydraulic cylinder base, 225. Third steel plate, 226. Fourth steel plate, 227. First adjusting plate, 228. Rotating shaft support, 229. Second adjusting plate, 23. Second connecting plate, 24. First connecting plate; 3. Boom lugs; 4 tie rod columns, 41 column connecting plates.

Claims

1. A pull rope adjustment device for a front pull rod of a discharging boom of a soil discharging machine, comprising a first connecting assembly (21) and a second connecting assembly (22) hinged to each other, wherein the first connecting assembly (21) cooperates with a steel wire rope (1), and is characterized in that: The relative distance between the first connecting component (21) and the second connecting component (22) is adjusted via a second rotating shaft (213), and an interference fit is achieved.

2. The front pull rod and rope adjustment device for the discharge arm of a soil discharging machine according to claim 1 is characterized in that: The first connecting assembly (21) comprises a pair of first steel plates (211), a first rotating shaft (212) penetrating and limited at the front end of the first steel plates (211), and a second rotating shaft (213) penetrating and limited at the rear end of the first steel plates (211); The second connecting assembly (22) includes a pair of second steel plates (221), a third rotating shaft (222) passing through and limited at the rear end of the second steel plates (221), a fourth steel plate (226) vertically fixed between the front ends of the first steel plates (211), a hydraulic cylinder (223) fixed on the fourth steel plate (226), and a rotating shaft support (228) arranged at the output end of the hydraulic cylinder (223) and matched with the second rotating shaft (213). The second rotating shaft (213) passes through and is limited at the front end of the second steel plate (221), so that the first connecting assembly (21) and the second connecting assembly (22) are hingedly connected.

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