Mechanical centering device for material receiving of material receiving arm of dumping plough

Abstract

A mechanical centering device for material receiving of a material receiving arm of a dumping plough comprises a steel guide rail (11) installed on the material receiving arm (1), a two-wheel swing device (2), a material guide groove (3) and a transmission guide mechanism (4), and is technically characterized in that when the two-wheel swing device (2) moves in the length direction of the material receiving arm (1), the displacement of the two-wheel swing device (2) is compensated on the material guide groove (3) through the transmission guide mechanism (4); and the guide chute (3) and the two-wheel swinging device (2) are relatively static. Deviation correction is achieved through a pure mechanical structure or simple electromechanical control, and the device has the advantages of being low in cost, high in reliability, easy and convenient to maintain and the like.

Description

Technical Field

[0001] The present invention relates to an adjustment device for open-pit mine dumping equipment, in particular to a mechanical centering device for a dumping machine receiving arm, and may involve an IPC classification number of B65G69 / 00. Background Art

[0002] The spoil spreader is a crucial piece of equipment in open-pit mining, its primary function being to transfer ore from the receiving arm to the spoil dump. It primarily consists of a discharging arm, operator's cab, slewing mechanism, lower steel structure, mainframe travel mechanism, maintenance compartment, support vehicle travel mechanism, receiving arm, transfer arm, and counterweight arm. As a key component of the spoil spreader, the receiving arm is responsible for receiving ore and accurately depositing it into the spoil dump. However, in practice, the fixed receiving arm chute is bulky and heavy, making it difficult to accommodate misalignment caused by slope variations, ground pressure variations, or steering deviations, leading to material spillage and excessive dust production.

[0003] Existing centering devices, such as the "centering protection alarm device for the discharge hopper and the receiving hopper of a soil discharger" disclosed in the applicable new patent with publication number CN221700463U, have a technical solution comprising a discharge hopper mounted on a discharge vehicle, an ore receiving hopper, a receiving belt, a receiving arm, and a receiving chute mounted below the discharge hopper, a rotary wheel and a receiving rotary mechanism mounted below the receiving arm and the receiving chute, two travel switches symmetrically arranged on both sides of the center of the two rotary wheels on the receiving rotary mechanism, and a limit plate installed on the receiving chute at positions corresponding to the travel switches. The middle portion of the limit plate is a horizontal section, and the ends of the limit plate are upwardly inclined sections. The two travel switches are in contact with the horizontal section of the lower surface of the limit plate, and the travel switches are electrically connected to a PLC control system. Due to the low adjustment accuracy, it is difficult to adapt to the centering requirements of different vehicle models or different working conditions, which can easily cause ore to spill, affecting soil discharge efficiency.

[0004] In response to the above problems, how to design a mechanical centering device with simple structure, high reliability and high adjustment accuracy has become a technical problem that needs to be solved urgently in the field of open-pit mine dumping equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a mechanical centering device for the receiving arm of a soil dumper, which realizes correction through a purely mechanical structure or simple electromechanical control, fundamentally solving the above problems. It has the advantages of low cost, high reliability and easy maintenance.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the mechanical centering device of the receiving arm of the earthmoving machine includes a steel guide rail installed on the receiving arm, a two-wheel swing device, a material guide trough, and a transmission guide mechanism. The technical point is: when the two-wheel swing device moves along the length direction of the receiving arm, the displacement of the two-wheel swing device is compensated on the material guide trough through the transmission guide mechanism, so that the material guide trough and the two-wheel swing device are relatively stationary.

[0007] Furthermore, the front and rear ends of the two-wheel swing device are respectively provided with a pair of first hinge points and a second hinge point, and the front and rear ends of the material guide chute are respectively provided with a pair of third hinge points and a fourth hinge point; The transmission and guiding mechanism includes six pairs of fixed pulleys and two pairs of cables; One pair of cables is led out from the first hinge point on the corresponding side, passes through the first pulley and the second pulley, changes direction, extends in the opposite direction, passes through the third pulley, changes direction, extends in the opposite direction, and is connected to the fourth hinge point on the corresponding side; The other pair of cables is led out from the second hinge point on the corresponding side, passes through the fourth pulley and the fifth pulley in sequence, changes direction, extends in the opposite direction, passes through the sixth pulley, changes direction, extends in the opposite direction, and is connected to the third hinge point on the corresponding side; The second pulley and the sixth pulley are coaxially arranged.

[0008] Furthermore, the two-wheel swing device includes a balance beam, a support mounted on the balance beam through a slewing bearing, a swingable support frame hinged in the middle to the support and provided with brackets at both ends, and a pair of lower running wheels mounted on the brackets; a first hinge point is provided at the front end of the corresponding side bracket, and a second hinge point is provided at the rear end of the bracket; The front and rear ends of the guide trough are respectively provided with a horizontal side beam, and the horizontal ends of each side beam are respectively provided with an upper walking wheel. The front side beam is provided with a pair of third hinge points, and the rear side beam is provided with a pair of fourth hinge points.

[0009] The beneficial effects of the present invention are as follows: in terms of the overall technical solution, deviation correction is achieved through a pure mechanical structure or simple electromechanical control. When the receiving arm of the soil spreader receives materials, the receiving port of the guide trough is always aligned with the unloading port of the unloading vehicle hopper, effectively avoiding the problem of excessive dust caused by the poor accuracy of the material dropping at the transfer point caused by the height difference between the guide trough and the unloading funnel when receiving materials, and reducing the deadweight of the tail of the receiving arm.

[0010] In terms of specific structure, when the supporting mechanism and the two-wheel swing device move along the length direction of the receiving arm, the displacement of the two-wheel swing device is compensated on the material guide trough through a transmission guide mechanism including six pairs of fixed pulleys and two pairs of steel cables, so that the material guide trough and the two-wheel swing device are relatively stationary. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 It is a structural schematic diagram of the two-wheel swing device of the present invention.

[0013] Figure 3 It is a structural schematic diagram of the material guide chute of the present invention.

[0014] Figure 4 It is an isometric structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0015] The following combination Figures 1 to 4 , the specific contents of the present invention are described in detail through specific embodiments.

[0016] The mechanical centering device of the receiving arm of the earthmoving machine includes steel guide rails 11 respectively installed at the upper and lower ends of the receiving arm 1 (the surface of the steel guide rails 11 is hardened to reduce friction loss), a two-wheel swing device 2, a material guide trough 3, and a transmission guide mechanism 4.

[0017] The two-wheeled swing mechanism 2 is located at the bottom of the receiving arm 1 and comprises a balance beam 27, a support 21 mounted on the balance beam 27 via a slew bearing 22, a swingable support frame 23 hinged at the center to the support 21, and brackets 231 at each end. A pair of lower running wheels 24 are mounted on the brackets 231, and a support mechanism 28 is fixed to the bottom of the balance beam 27. The material guide trough 3 is supported on the steel guide rail 11 at the bottom by the two pairs of lower running wheels 24 and can move along its length. A first hinge point 25 is located at the front end of each side bracket 231, and a second hinge point 26 is located at the rear end of each bracket 231.

[0018] The top of the chute 3 is defined by a material receiving opening 33. A transverse side beam 31 is provided at each of the front and rear ends of the chute 3. Each side beam 31 is fitted with an upper running wheel 34 at each horizontal end. The front side beam 31 is provided with a pair of third hinge points 311, while the rear side beam 31 is provided with a pair of fourth hinge points 312. The chute 3 is supported by the upper running wheel assembly 34 on the upper steel guide rail 11 and is movable along its length. The unloading vehicle hopper is located above the chute 3, with its center coinciding with the center of the support mechanism 28. The center of the support mechanism 28, in turn, coincides with the center of the track running mechanism (not labeled in the figure) beneath it.

[0019] The transmission guide mechanism 4 includes six pairs of fixed pulleys and two pairs of cables. For ease of description, the two pairs of cables 42 are described as segments per pulley. In reality, the first through fourth cables (421-424, hereinafter referred to as first cables) and the fifth through eighth cables (425-428, hereinafter referred to as second cables) are each a single, continuous cable. The ends of the cables are secured to the side beam 31 or bracket 231 via turnbuckles (not shown).

[0020] A pair of first steel cables are led out from the first hinge point 25 on the corresponding side, pass through the first pulley 411 and the second pulley 412, and then change direction and extend in the opposite direction. After passing through the third pulley 413, they change direction and extend in the opposite direction and are connected to the fourth hinge point 312 on the corresponding side. A pair of second steel cables are led out from the second hinge point 26 on the corresponding side, and then pass through the fourth pulley 414 and the fifth pulley 415 in sequence, and then change direction and extend in the opposite direction. After passing through the sixth pulley 416, they change direction and extend in the opposite direction and are connected to the third hinge point 311 on the corresponding side. The second pulley 412 and the sixth pulley 416 are coaxially arranged.

[0021] Working principle: like Figure 4 As shown, when the support mechanism 28 and the receiving arm 1 generate relative motion in the direction A, a displacement L occurs, pulling the cables between the first hinge point 25 and the fourth hinge point 312: that is, the first to fourth cables (421-424), causing the guide chute 3 to also generate a displacement L in the direction A. The center of the guide chute 3 does not change relative to the center of the discharge vehicle hopper. On the contrary, when the support mechanism 28 produces a relative displacement S in the direction B, it pulls the cables between the second hinge point 26 and the third hinge point 311: that is, the fifth to eighth cables (425~428), causing the material guide trough 3 to produce a displacement S in the direction B, and the center of the material guide trough 3 remains unchanged relative to the center of the unloading vehicle funnel.

[0022] Through the above adjustment, it is ensured that the center of the guide chute 3 always coincides with the center of the discharge vehicle hopper.

[0023] Description of reference numerals: 1 receiving arm, 11 steel guide rails; 2 two-wheel swing device, 21 support, 22 slewing bearing, 23 carrier frame, 231 bracket, 24 lower running wheel, 25 first hinge point, 26 second hinge point, 27 balance beam, 28 support mechanism; 3 material guide chute, 31 side beam, 311 third hinge point, 312 fourth hinge point, 33 material receiving port, 34 upper running wheel assembly; 4 Transmission guide mechanism, 41 pulley assembly, 411 first pulley, 412 second pulley, 413 third pulley, 414 fourth pulley, 415 fifth pulley, 416 sixth pulley, 42 cable assembly, 421 first cable, 422 second cable, 423 third cable, 424 fourth cable, 425 fifth cable, 426 sixth cable, 427 seventh cable, 428 eighth cable.

Claims

1. A mechanical centering device for receiving a material on a receiving arm of a soil dumper, comprising a steel guide rail (11) mounted on the receiving arm (1), a two-wheel swing device (2), a material guide trough (3), and a transmission guide mechanism (4), characterized in that: When the two-wheel swing device (2) moves along the length direction of the material receiving arm (1), the displacement of the two-wheel swing device (2) is compensated on the material guide trough (3) through the transmission guide mechanism (4), so that the material guide trough (3) and the two-wheel swing device (2) are relatively stationary.

2. The mechanical centering device for receiving material of the receiving arm of the earthmoving machine according to claim 1, characterized in that: A pair of first hinge points (25) and a second hinge point (26) are respectively provided at the front and rear ends of the two-wheel swing device (2), and a pair of third hinge points (311) and a fourth hinge point (312) are respectively provided at the front and rear ends of the material guide trough (3); The transmission guide mechanism (4) includes six pairs of fixed pulleys and two pairs of cables; A pair of cables are led out from the first hinge point (25) on the corresponding side, pass through the first pulley (411) and the second pulley (412), change direction and extend in the opposite direction, pass through the third pulley (413), change direction and extend in the opposite direction and connect to the fourth hinge point (312) on the corresponding side; Another pair of cables is led out from the second hinge point (26) on the corresponding side, passes through the fourth pulley (414) and the fifth pulley (415) in sequence, changes direction, and then extends in the reverse direction. After passing through the sixth pulley (416), the cables change direction and then extend in the reverse direction and are connected to the third hinge point (311) on the corresponding side. The second pulley (412) and the sixth pulley (416) are coaxially arranged.

3. The mechanical centering device for receiving material of a receiving arm of a soil dumper according to claim 1 or 2, characterized in that: The two-wheel swing device (2) comprises a balance beam (27), a support (21) mounted on the balance beam (27) via a slewing bearing (22), a swingable carrier frame (23) hinged at its middle portion to the support (21) and provided with brackets (231) at both ends, and a pair of lower running wheels (24) mounted on the brackets (231); a first hinge point (25) is provided at the front end of the corresponding side bracket (231), and a second hinge point (26) is provided at the rear end of the bracket (231); The front and rear ends of the guide trough (3) are each provided with a transverse side beam (31), and the horizontal ends of each side beam (31) are respectively provided with an upper running wheel (34). The front side beam (31) is provided with a pair of third hinge points (311), and the rear side beam (31) is provided with a pair of fourth hinge points (312).

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