Improved double-side pneumatic pear type unloader

Abstract

The utility model discloses an improved bilateral pneumatic pear-type discharger, which belongs to the field of dischargers and comprises a discharging box, a conveying belt and a discharging mechanism. The discharging mechanism comprises a plowshare assembling frame, a piston rod, an assembling ring, a first air cylinder, a hinge seat, a lifting assembling frame, an assembling plate, a supporting connecting rod, a supporting seat, a supporting roller, a coulter, an upper plowshare, a first linkage rod, a lower plowshare and a second linkage rod. The bracket can be driven to rise synchronously through the linkage rod and the hinge structure, the carrier roller at the top of the bracket can abut against the conveying belt body to ensure that the conveying belt body is in a flat state, meanwhile, the plowshare can be connected with the top of the conveying belt to conduct flow guide discharging, extrusion of the plowshare to the conveying belt can be reduced, abrasion and the failure rate of the conveying belt are reduced, and the service life of the conveying belt is prolonged. Meanwhile, the plowshare is combined with the discharging boxes on the two sides, the materials can be guided to the two sides to be discharged, the discharging efficiency is improved, and discharging abrasion is shared.

Description

Technical Field

[0001] This utility model belongs to the field of unloaders, and specifically relates to an improved double-sided pneumatic pear-type unloader. Background Technology

[0002] When conveying materials on a conveyor belt, a discharge device is often added to the conveyor belt to direct the material out of the belt. The material is directed to a specific area for discharge by opening and closing the discharge device, avoiding the inconvenience of the conveyor belt only being able to discharge at the end. However, in the current technology, U-shaped grooved conveyor belts are often used for conveying small materials in mining and other applications. This means that when directional discharge is required, the guiding mechanism needs to be pressed down to the lowest position of the U-shaped structure of the conveyor belt to guide all the material out of the conveyor belt. This results in the conveyor belt having to withstand greater pressure, and the sides of the conveyor belt being excessively squeezed against the guiding mechanism, leading to increased wear and even tearing of the conveyor belt in severe cases. This results in a high failure rate and inconvenience. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To overcome the shortcomings of existing technologies, an improved double-sided pneumatic pear-shaped unloader is proposed. This addresses the issue that existing technologies often use U-shaped grooved conveyor belts for transporting small materials in mines and other applications. However, when directional unloading is required, the guiding mechanism needs to be pressed down to the lowest position of the U-shaped structure of the conveyor belt to guide all the material out. This results in the conveyor belt bearing greater pressure, causing excessive compression between the two sides of the conveyor belt and the guiding mechanism, leading to increased wear and even tearing of the conveyor belt in severe cases. This results in a high failure rate and inconvenience.

[0005] (II) Technical Solution

[0006] This utility model is achieved through the following technical solution: This utility model proposes an improved double-sided pneumatic pear-shaped unloader, the structure of which includes a discharge box, a conveyor belt and an unloading mechanism. The conveyor belt passes through the middle of the unloading mechanism, and the discharge box is fixed on both sides of the side end face of the unloading mechanism.

[0007] The unloading mechanism includes a plow assembly frame, piston rod, assembly ring, first cylinder, hinge seat, lifting assembly frame, assembly plate, support rod, support base, idler roller, plow blade, upper plow head, first linkage rod, lower plow head and second linkage rod. The assembly plate is fixed between the two discharge boxes. The top of the assembly plate is hinged to the bottom of the support base through the support rod. The top of the support base is equipped with an idler roller, which is located below the upper belt of the conveyor belt.

[0008] The lifting assembly frame is fixedly connected to the discharge box, and the plow head assembly frame is fixedly connected to the upper plow head. The lower plow head is mounted at the bottom of the upper plow head. The upper and lower plow heads are pointed shapes that slope from the middle of the conveyor belt to both sides. The lower plow head is located above the conveyor belt and between the two discharge boxes. The plow blade is mounted on the side of the lower plow head facing the feeding direction of the conveyor belt. The plow head assembly frame is fixedly connected to the top of the first linkage rod on the side away from the upper plow head. The connection between the plow head assembly frame and the first linkage rod is hinged to the lifting assembly frame. The bottom of the first linkage rod is hinged to the support through the second linkage rod. The top of the lifting assembly frame is hinged to an assembly ring through a hinge seat. The assembly ring is used for assembling the first cylinder. The first cylinder is used to drive the piston rod to extend and retract. The piston rod is hinged to the plow head assembly frame on the side away from the first cylinder.

[0009] Furthermore, the sharp corners of the upper and lower plowshares are assembled facing the feeding direction of the conveyor belt.

[0010] Furthermore, the first and second linkage rods are used to drive the support to descend when the plowshare assembly frame is raised, and the first and second linkage rods are used to drive the support to rise when the plowshare assembly frame is lowered.

[0011] Furthermore, the plow blade is made of wear-resistant steel plate.

[0012] Furthermore, the support and roller are used to drive the upper belt of the conveyor belt to fit against the bottom of the lower plow head after the plow head assembly frame is lowered.

[0013] Furthermore, it also includes a limiting device for limiting the height at which the upper plowshare descends.

[0014] Furthermore, the limiting device includes a second cylinder, a limiting assembly frame, a top pressure connecting plate, an extension rod, a first pressure sensor, and a second pressure sensor. The two ends of the limiting assembly frame are fixedly connected to the two discharge boxes. The second cylinder is mounted on the limiting assembly frame. The top pressure connecting plate is fixed to the top of the upper plowshare's pointed corner. The bottom of the top pressure connecting plate away from the upper plowshare is connected to the top of the piston rod of the second cylinder. The first pressure sensor is mounted at the junction of the second cylinder and the top pressure connecting plate. One end of the extension rod is fixedly connected to the lower plowshare. The other end of the extension rod passes through the upper plowshare and is locked by a nut. The second pressure sensor is mounted between the upper and lower plowshares.

[0015] Furthermore, the first cylinder, the second cylinder, the first pressure sensor, and the second pressure sensor are all electrically connected to the controller. The first pressure sensor is used to detect the pressure between the top pressure plate and the second cylinder, and the second pressure sensor is used to detect the pressure between the upper plow and the lower plow.

[0016] (III) Beneficial Effects

[0017] One of the above technical solutions has the following advantages or beneficial effects:

[0018] With an upper-pressing and lower-pushing unloading mechanism, when the mechanism is running, the plow used for guiding and unloading lowers, and drives the support to rise synchronously through the linkage rod and hinge structure. This causes the idler rollers on the top of the support to press against the conveyor belt, ensuring it remains flat. At the same time, the plow connects with the top of the conveyor belt to guide the material out, reducing the pressure of the plow on the conveyor belt. Especially for U-shaped groove conveyor belts, this avoids excessive pressure between the sides of the conveyor belt and the plow, preventing increased wear, reducing the failure rate of the conveyor belt, and increasing its service life. In addition, the plow combined with the discharge box structure on both sides can guide the material on the conveyor belt to discharge on both sides, increasing the discharge efficiency, avoiding discharge congestion, and preventing one-sided wear of the conveyor belt caused by discharge on one side, thus distributing the wear of the discharged material. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the plowshare of this utility model after it has been lowered.

[0022] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0023] Figure 4 This utility model Figure 2 A magnified structural diagram of B in the diagram;

[0024] Figure 5 This is a schematic cross-sectional view of the plowshare of this utility model after it has been raised.

[0025] In the diagram: discharge box - 1, conveyor belt - 2, unloading mechanism - 3, plow head assembly frame - 3a, piston rod - 3b, assembly ring - 3c, first cylinder - 3d, hinge seat - 3e, lifting assembly frame - 3f, assembly plate - 3g, support connecting rod - 3h, support seat - 3i, idler roller - 3j, plow blade - 3k, upper plow head - 3l, first linkage rod - 3m, lower plow head - 3n, second linkage rod - 3o, second cylinder - 4a, limit assembly frame - 4b, top pressure connecting plate - 4c, extension rod - 4d, first pressure sensor - 4e, second pressure sensor - 4f. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0027] Example 1:

[0028] This utility model provides an improved double-sided pneumatic pear-shaped unloader: its structure includes a discharge box 1, a conveyor belt 2 and an unloading mechanism 3. The conveyor belt 2 passes through the middle of the unloading mechanism 3, and the discharge box 1 is fixed on both sides of the side end face of the unloading mechanism 3.

[0029] The unloading mechanism 3 includes a plow head assembly frame 3a, a piston rod 3b, an assembly ring 3c, a first cylinder 3d, a hinge seat 3e, a lifting assembly frame 3f, an assembly plate 3g, a support link 3h, a support 3i, a roller 3j, a plow blade 3k, an upper plow head 3l, a first linkage rod 3m, a lower plow head 3n, and a second linkage rod 3o. The assembly plate 3g is fixed between the two discharge boxes 1. The top of the assembly plate 3g is hinged to the bottom of the support 3i through the support link 3h. The top of the support 3i is equipped with a roller 3j, which is located below the upper belt of the conveyor belt 2.

[0030] The lifting assembly frame 3f is fixedly connected to the discharge box 1, and the plow head assembly frame 3a is fixedly connected to the upper plow head 3l. A lower plow head 3n is mounted at the bottom of the upper plow head 3l. The upper plow head 3l and the lower plow head 3n are both pointed shapes that slope outwards from the middle of the conveyor belt 2. The lower plow head 3n is located above the conveyor belt 2 and between the two discharge boxes 1. A plow blade 3k is mounted on the side of the lower plow head 3n facing the feeding direction of the conveyor belt 2. The plow head assembly frame 3a is connected to the first joint on the side away from the upper plow head 3l. The top of the moving rod 3m is fixedly connected. The connection between the plowshare assembly frame 3a and the first linkage rod 3m is hinged to the lifting assembly frame 3f. The bottom of the first linkage rod 3m is hinged to the support 3i through the second linkage rod 3o. The top of the lifting assembly frame 3f is hinged to the assembly ring 3c through the hinge seat 3e. The assembly ring 3c is used for assembling the first cylinder 3d. The first cylinder 3d is used to drive the piston rod 3b to extend and retract. The side of the piston rod 3b away from the first cylinder 3d is hinged to the plowshare assembly frame 3a.

[0031] The sharp corners of the upper plow head 3l and the lower plow head 3n are assembled facing the feeding direction of the conveyor belt 2.

[0032] The first linkage rod 3m and the second linkage rod 3o are used to drive the support 3i to fall when the plow head assembly frame 3a is raised, and the first linkage rod 3m and the second linkage rod 3o are used to drive the support 3i to rise when the plow head assembly frame 3a is lowered.

[0033] The plow blade 3k is made of wear-resistant steel plate.

[0034] The support 3i and the roller 3j are used to drive the upper belt of the conveyor belt 2 to fit against the bottom of the lower plow head 3n after the plow head assembly frame 3a is lowered.

[0035] During diversion and unloading, such as Figure 2 The piston rod 3b can be extended by controlling the first cylinder 3d, causing the piston rod 3b to press against the plow head assembly frame 3a, driving the upper plow head 3l and lower plow head 3n to descend. At this time, the plow head assembly frame 3a will also drive the first linkage rod 3m to rotate synchronously, causing the first linkage rod 3m to pull the support 3i to move through the second linkage rod 3o. Since the support 3i is hinged to the assembly plate 3g through the support connecting rod 3h, the movement of the support 3i will cause the support connecting rod 3h to rotate along the hinge point with the assembly plate 3g, causing the support 3i to rise, thereby causing the roller 3j to gradually align with the assembly plate 3g. The bottom of the upper belt body of the conveyor belt 2 is connected, so that the idler roller 3j gradually presses the upper belt body of the conveyor belt 2 flat. At this time, by setting the cooperation relationship of the plow head assembly frame 3a, the first linkage rod 3m, the second linkage rod 3o and the support connecting rod 3h, the lower plow head 3n can gradually fit with the top of the upper belt body of the conveyor belt 2 to achieve material discharge. This can reduce the squeezing of the plow head on the conveyor belt 2. Especially for U-shaped groove conveyor belts, it can avoid excessive squeezing of the two sides of the conveyor belt with the plow head, which will cause aggravated wear, reduce the failure rate of the conveyor belt 2 and increase the service life of the conveyor belt 2.

[0036] Secondly, in order to increase the reliability of the fit, when the support 3i is raised to the highest point, the lower plow head 3n applies a certain pressure to the conveyor belt 2, so that the support 3i can be raised without raising to the highest point to flatten the conveyor belt and guide the material out. After a certain degree of wear, the support 3i can be raised again to maintain the fit and reduce the need for maintenance and replacement.

[0037] like Figure 5 As shown, during normal conveying, the piston rod 3b can be retracted by the first cylinder 3d, causing the plow head assembly frame 3a to drive the upper plow head 3l and the lower plow head 3n to rise. At the same time, the first linkage rod 3m and the second linkage rod 3o drive the support 3i to rotate in the opposite direction, so that the support 3i is released from the pressure on the conveyor belt 2, and the conveyor belt 2 is in normal operation, and the plow head will not obstruct the conveying of materials.

[0038] Furthermore, the equipment adopts a plow head structure that is inclined to both sides of the conveyor belt 2. Combined with the structure of the discharge boxes 1 on both sides, the material on the conveyor belt 2 can be guided to the discharge on both sides, which increases the discharge efficiency, avoids discharge congestion, and avoids the situation of single-sided discharge causing single-sided wear of the conveyor belt 2, thus sharing the wear of the discharge.

[0039] Example 2:

[0040] Compared to Embodiment 1, this embodiment of the improved double-sided pneumatic pear-type unloader also includes a limiting device 4. The limiting device 4 is used to limit the lowering height of the upper plow head 3l. In use, by adjusting the fixed height of the limiting device, the lowering height of the plow head is limited, further avoiding excessive compression caused by the first cylinder 3d lowering the plow head too much, and ensuring that the pressure between the plow head and the conveyor belt 2 is within a suitable range.

[0041] Example 3:

[0042] The limiting device 4 includes a second cylinder 4a, a limiting assembly frame 4b, a top pressure connecting plate 4c, an extension rod 4d, a first pressure sensor 4e, and a second pressure sensor 4f. The two ends of the limiting assembly frame 4b are fixedly connected to the two discharge boxes 1. The second cylinder 4a is mounted on the limiting assembly frame 4b. The top pressure connecting plate 4c is fixed to the top of the sharp corner of the upper plow head 3l. The bottom of the top pressure connecting plate 4c away from the upper plow head 3l is connected to the top of the piston rod of the second cylinder 4a. The first pressure sensor 4e is mounted at the junction of the second cylinder 4a and the top pressure connecting plate 4c. One end of the extension rod 4d is fixedly connected to the lower plow head 3n. The other end of the extension rod 4d passes through the upper plow head 3l and is locked by a nut. The second pressure sensor 4f is mounted between the upper plow head 3l and the lower plow head 3n.

[0043] The first cylinder 3d, the second cylinder 4a, the first pressure sensor 4e, and the second pressure sensor 4f are all electrically connected to the controller. The first pressure sensor 4e is used to detect the pressure between the top pressure plate 4c and the second cylinder 4a, and the second pressure sensor 4f is used to detect the pressure between the upper plow head 3l and the lower plow head 3n.

[0044] During operation, after the lower plow head 3n contacts the conveyor belt 2, the pressure of the lower plow head 3n on the conveyor belt 2 is fed back by the second pressure sensor 4f between the upper plow head 3l and the lower plow head 3n. This allows the first cylinder 3d to more precisely control the piston rod 3b to lower the plow head, further preventing excessive pressure on the conveyor belt 2 and accelerating wear. It also ensures the normal flow of material and prevents material leakage from the conveyor belt 2 due to insufficient pressure from the lower plow head 3n. Simultaneously, the lowering of the upper plow head 3l causes the top pressure connecting plate 4c to follow. Based on the pressure change of the second pressure sensor 4f, when the pressure is appropriate, the equipment extends the second cylinder 4a to press against the top pressure connecting plate 4c, ensuring the upper plow head 3l is limited and reducing the risk of material leakage. The continuous operation of the first cylinder 3d prevents the upper plow head 3l from excessively compressing the conveyor belt 2 as it continues to descend, thus providing double protection. The first pressure sensor 4e between the second cylinder 4a and the top pressure connecting plate 4c can also detect the operation of the upper plow head 3l through pressure changes. When the first pressure sensor 4e detects insufficient pressure, the second cylinder 4a gradually contracts, while the second pressure sensor 4f changes in real time, causing the upper plow head 3l to descend accordingly. When the pressure of the first pressure sensor 4e is sufficient, the upper plow head 3l is automatically maintained at its limit. This achieves precise automatic pressure regulation, ensuring that the plow head applies normal pressure and guides the conveyor belt 2, further reducing overpressure losses on the conveyor belt 2. The rest of the structure and effect remain unchanged.

[0045] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", 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 simplifying the description, 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.

[0046] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. An improved double-sided pneumatic pear-type unloader, characterized in that: It includes a discharge box (1), a conveyor belt (2) and an unloading mechanism (3). The conveyor belt (2) passes through the middle of the unloading mechanism (3). The discharge box (1) is fixed on both sides of the side end face of the unloading mechanism (3). The unloading mechanism (3) includes a plow assembly frame (3a), a piston rod (3b), an assembly ring (3c), a first cylinder (3d), a hinge seat (3e), a lifting assembly frame (3f), an assembly plate (3g), a support link (3h), a support seat (3i), a roller (3j), a plow blade (3k), an upper plow head (3l), a first linkage rod (3m), a lower plow head (3n), and a second linkage rod (3o). The assembly plate (3g) is fixed between the two discharge boxes (1). The top of the assembly plate (3g) is hinged to the bottom of the support seat (3i) through the support link (3h). The top of the support seat (3i) is equipped with a roller (3j), which is located below the upper belt of the conveyor belt (2). The lifting assembly frame (3f) is fixedly connected to the discharge box (1), and the plow head assembly frame (3a) is fixedly connected to the upper plow head (3l). The lower plow head (3n) is assembled at the bottom of the upper plow head (3l). The upper plow head (3l) and the lower plow head (3n) are pointed shapes that slope from the middle of the conveyor belt (2) to both sides. The lower plow head (3n) is located above the conveyor belt (2) and between the two discharge boxes (1). The plow blade (3k) is assembled on the side of the lower plow head (3n) facing the feeding direction of the conveyor belt (2). The plow head assembly frame (3a) is connected to the first joint on the side away from the upper plow head (3l). The top of the moving rod (3m) is fixedly connected. The connection between the plowshare assembly frame (3a) and the first linkage rod (3m) is hinged to the lifting assembly frame (3f). The bottom of the first linkage rod (3m) is hinged to the support (3i) through the second linkage rod (3o). The top of the lifting assembly frame (3f) is hinged to the assembly ring (3c) through the hinge seat (3e). The assembly ring (3c) is used for assembling the first cylinder (3d). The first cylinder (3d) is used to drive the piston rod (3b) to extend and retract. The piston rod (3b) is hinged to the plowshare assembly frame (3a) on the side away from the first cylinder (3d).

2. An improved double-sided pneumatic pear-type unloader according to claim 1, characterized in that: The sharp corners of the upper plow (3l) and lower plow (3n) are assembled facing the feeding direction of the conveyor belt (2).

3. An improved double-sided pneumatic pear-type unloader according to claim 1, characterized in that: The first linkage rod (3m) and the second linkage rod (3o) are used to drive the support (3i) to fall when the plow head assembly frame (3a) is raised, and the first linkage rod (3m) and the second linkage rod (3o) are used to drive the support (3i) to rise when the plow head assembly frame (3a) is lowered.

4. An improved double-sided pneumatic pear-type unloader according to claim 1, characterized in that: The plow blade (3k) is made of wear-resistant steel plate.

5. An improved double-sided pneumatic pear-type unloader according to claim 3, characterized in that: The support (3i) and roller (3j) are used to drive the upper belt of the conveyor belt (2) to fit against the bottom of the lower plow head (3n) after the plow assembly frame (3a) is lowered.

6. An improved double-sided pneumatic pear-type unloader according to claim 1, characterized in that: It also includes a limiting device (4) for limiting the height of the upper plowshare (3l) as it descends.

7. An improved double-sided pneumatic pear-type unloader according to claim 6, characterized in that: The limiting device (4) includes a second cylinder (4a), a limiting assembly frame (4b), a top pressure connecting plate (4c), an extension rod (4d), a first pressure sensor (4e), and a second pressure sensor (4f). The limiting assembly frame (4b) is fixedly connected at both ends to the two discharge boxes (1). The second cylinder (4a) is mounted on the limiting assembly frame (4b). The top pressure connecting plate (4c) is fixed to the top of the sharp corner of the upper plowshare (3l). 4c) The bottom of the side away from the upper plowshare (3l) is connected to the top of the piston rod of the second cylinder (4a). The first pressure sensor (4e) is assembled at the junction of the second cylinder (4a) and the top pressure connecting plate (4c). One end of the extension rod (4d) is fixedly connected to the lower plowshare (3n). The other end of the extension rod (4d) passes through the upper plowshare (3l) and is locked by a nut. The second pressure sensor (4f) is assembled between the upper plowshare (3l) and the lower plowshare (3n).

8. An improved double-sided pneumatic pear-type unloader according to claim 7, characterized in that: The first cylinder (3d), the second cylinder (4a), the first pressure sensor (4e), and the second pressure sensor (4f) are all electrically connected to the controller. The first pressure sensor (4e) is used to detect the pressure between the top pressure plate (4c) and the second cylinder (4a), and the second pressure sensor (4f) is used to detect the pressure between the upper plowshare (3l) and the lower plowshare (3n).

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