A rotary automatic centering device for a mining mixer truck

Abstract

This invention provides an automatic self-aligning device for a mining mixer truck, including a vehicle body support, an inner ring for connecting to the mixing drum, and a feeding / discharging unit covering the inner ring and rotatably connected to the circumferential outer wall of the inner ring. It also includes a floating self-aligning structure, one end of which is flexibly connected to the feeding / discharging unit, and the other end connected to the vehicle body support. Due to the function of the floating self-aligning component, this invention can compensate for vertical, horizontal, and forward / backward movement within a certain range, allowing the feeding / discharging unit to move with the inner ring. This prevents the outer ring from over-constraining the inner ring, thus avoiding excessive force between the inner and outer rings. This prevents abnormal noise or even damage to the rotating device due to excessive contact and friction between the outer and inner rings, protecting the entire rotating device, ensuring operational safety, and extending the device's service life.

Description

Technical Field

[0001] The invention relates to the field of mixer trucks, and more specifically to a rotary automatic centering device for a mining mixer truck. Background Art

[0002] A mining mixer truck is a mixer truck used in mines and tunnels. The feed port and discharge mechanism (the discharge port and the discharge cylinder for opening the discharge mechanism) of the existing mixer truck are integrated on the tail cover of the mixer truck. At the same time, the tail cover is used to seal the tank body of the mixer truck to prevent the tank body from being exposed and causing evaporation or exposure of the material liquid; the inner ring is connected to the mixing drum of the tank body by bolts, and rotates with the mixing drum as a dynamic side whole; the tail cover is connected to the outer ring to form a static side whole, thus forming a rotary seal; after the tail cover is closed, there will be a gap between the inner ring and the tail cover, and the sealing of the feed and discharge is mainly sealed by the sealing ring on the inner side of the tail cover fitting on the inner ring of the tank body. The inner ring may be offset due to manufacturing tolerances or deformation of the mixing drum when it is unloaded or fully loaded, or during the rotation of the inner ring, resulting in misalignment of the axis lines of the inner and outer rings. If the outer ring cannot be adjusted to follow the inner ring for compensatory movement, the outer ring and the inner ring may be partially overfitted, which may lead to circumferential rotation of the outer ring, or abnormal noise or even damage the rotating device. There are many rotating devices in current technical means, some of which use floating circumferential stop mechanisms to circumferentially stop the outer ring to prevent circumferential movement of the outer ring. However, the floating circumferential stop mechanism prevents the outer ring from circumferentially rotating by means of a limit groove and a protrusion, which can only prevent the outer ring from being driven by the inner ring to rotate circumferentially, but cannot compensate for the offset of the axis line of the outer ring, that is, the position of the outer ring cannot be adjusted to compensate for the displacement of the inner ring, which may still lead to partial overfitting between the outer ring and the inner ring, abnormal noise or even damage the rotating device. Summary of the invention

[0003] The present invention provides a rotary automatic centering device for a mining mixer truck to overcome the problem described in the background art that the axis line of the outer ring cannot be offset and compensated, and the outer ring and the inner ring are overfitted, abnormal noise is emitted, or even the rotary device is damaged. The present invention can adjust the position of the outer ring in a floating manner, and prevent the outer ring and the inner ring from overfitting, abnormal noise, or even damage to the rotary device.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a rotating automatic centering device for a mining mixer truck, comprising a vehicle body bracket, an inner ring for connecting to a mixing drum, and a feed and discharge unit covered on the inner ring and rotatably connected to the circumferential outer wall of the inner ring, and also comprising a floating centering structure, one end of the floating centering structure is flexibly connected to the feed and discharge unit, and the other end is connected to the vehicle body bracket.

[0005] Furthermore, the feed and discharge unit includes an outer ring and a sealing tail cover, the circumferential inner wall of the outer ring is rotatably connected to the circumferential outer wall of the inner ring, the sealing tail cover is connected to one end face of the outer ring by circumferentially distributed connecting bolts, and the sealing tail cover is provided with a feed hopper and a discharge mechanism on one end face facing away from the inner ring and the outer ring.

[0006] As a preferred solution, the floating centering structure includes arc-shaped support columns located on both sides of the vehicle body bracket and cross beams fixedly connected to both sides of the sealing tail cover. The arc-shaped support columns are located outside on both sides of the sealing tail cover, one end of the cross beam is fixedly connected to an end face of the sealing tail cover facing away from the inner ring, and the other end is connected to the arc-shaped support columns through a movable joint.

[0007] Furthermore, the movable joint includes a pin shaft and pin holes respectively opened at the relative positions of the cross beam and the arc-shaped support column. The pin shaft can be movably inserted into the pin holes at the relative positions of the cross beam and the arc-shaped support column in turn, and the inner diameter of the pin hole is larger than the outer diameter of the pin shaft.

[0008] Furthermore, the pin hole is a waist-shaped hole, and the length and width of the waist-shaped hole are both larger than the outer diameter of the pin shaft.

[0009] Furthermore, a limiting member is installed at one end of the pin shaft passing through the pin hole on the arc-shaped support column, and there is a distance between the limiting member and the lower end surface of the arc-shaped support column.

[0010] As another preferred solution, the floating centering structure is an elastic compensation component respectively connected to both sides of the outer ring close to one end of the vehicle body support.

[0011] Furthermore, the elastic compensation component includes a support bracket, a reset device and a support, the support bracket is connected to the circumferential outer wall of the outer ring, the support is installed on the vehicle body bracket, and one end of the reset device is connected to the support bracket and the other end is connected to the support.

[0012] Preferably, the resetting device is a spring or other device with elastic resetting function.

[0013] Preferably, the spring is a stainless steel spring.

[0014] Compared with the prior art, the beneficial effects are:

[0015] Due to the effect of the floating self-aligning component, the present invention can float up and down, front and back, left and right within a certain range for compensation, so that the feeding and discharging units can move with the inner ring, and the outer ring will not over-constrain the inner ring, so that the inner and outer rings will not be blocked, and the outer ring and the inner ring will not produce abnormal noise or even damage the rotating device due to excessive fitting and excessive friction. It can protect the entire rotating device, ensure operation safety, and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a rear view schematic diagram of Example 1 from the rear angle.

[0017] Figure 2 It is a structural schematic diagram of Example 1.

[0018] Figure 3 It is a schematic diagram of the structure of the movable joint in Example 1.

[0019] Figure 4 It is a structural schematic diagram of Example 2.

[0020] Figure 5 It is a structural schematic diagram of the elastic compensation component in Example 2. DETAILED DESCRIPTION

[0021] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", "long" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, a rotary automatic centering device for a mining mixer truck comprises a vehicle body support 212, an inner ring for connecting to a mixing drum 109, and a feed and discharge unit 200 which is covered on the inner ring and rotatably connected to the circumferential outer wall of the inner ring, and also comprises a floating centering structure, one end of the floating centering structure is flexibly connected to the feed and discharge unit 200, and the other end is connected to the vehicle body support 212; the feed and discharge unit 200 comprises an outer ring 102 and a sealing tail cover 103 (the inner ring is covered by the sealing tail cover 103 in the figure, so the inner ring is not shown), the circumferential inner wall of the outer ring 102 is rotatably connected to the circumferential outer wall of the inner ring, the sealing tail cover 103 is connected to one end face of the outer ring 102 by circumferentially distributed connecting bolts, and a feed hopper 115 and a discharge mechanism 116 are provided on one end face of the sealing tail cover 103 which is opposite to the inner ring and the outer ring 102.

[0026] In this embodiment, the floating centering structure includes arc-shaped support columns 201 located on both sides of the vehicle body support 212 and crossbeams 202 fixedly connected to both sides of the sealing tail cover 103. The arc-shaped support columns 201 are located outside the two sides of the sealing tail cover (103). One end of the crossbeam 202 is fixedly connected to the end surface of the sealing tail cover 103 facing away from the inner ring, and the other end is connected to the arc-shaped support column 201 through a movable joint 203. Figure 3 As shown, the movable joint 203 includes a pin shaft 204 and pin holes 205 respectively opened at the relative positions of the cross beam 202 and the arc-shaped support column 201. The pin shaft 204 can be movably passed through the pin holes 205 at the relative positions of the cross beam 202 and the arc-shaped support column 201 in turn, and the inner diameter of the pin hole 205 is larger than the outer diameter of the pin shaft 204; the pin hole 205 is a waist-shaped hole, and the length and width of the waist-shaped hole are both larger than the outer diameter of the pin shaft 204; a limiting member 206 is also installed at one end of the pin shaft 204 that passes through the pin hole 205 on the arc-shaped support column 201, and the limiting member 206 can be a horizontal pin or other equivalent devices, and there is a distance between the limiting member 206 and the lower end surface of the arc-shaped support column 201.

[0027] In this embodiment, fixed arc-shaped support columns 201 are provided on the left and right sides of the rear end of the vehicle body support 212, and the opening of the mixing drum 109, the inner ring and the feed and discharge unit 200 are all located between the two arc-shaped support columns 201; the inner ring is fixed to the opening of the mixing drum 109 through a connecting flange, and rotates with the mixing drum 109, and serves as a movable end in the rotary device; the feed and discharge unit 200 is provided on the inner ring as a fixed integral cover to seal the mixing drum 109 to prevent evaporation of water and leakage of slurry; the feed and discharge unit 200 does not rotate, and serves as a fixed end. When the inner ring, as a movable end, rotates around the axis of the outer ring 102 following the mixing drum 109, the sealing tail cover 103 always seals the opening of the inner ring through the provided sealing member to prevent leakage of slurry; the feed hopper 115 and the discharge mechanism 116 (usually a discharge port, a discharge cover and a discharge cylinder) of the mixer truck are both provided on the feed and discharge unit 200; these are all prior arts and will not be described one by one.

[0028] Ideally, the axis lines of the inner ring and the outer ring 102 should basically coincide with each other, so as to avoid excessive fit and frictional damage between the inner ring and the outer ring 102, which may cause abnormal noise or even damage to the rotating device. However, due to some deformation of the mixing drum 109 when it is empty or fully loaded, the position of the inner ring may shift. By adopting the solution in this embodiment, the outer ring 102 can follow the shift of the inner ring and compensate for it. The specific working principle is: one end of the cross beam 202 is fixedly connected to the seal, and the other end is flexibly connected (the flexible connection here means that it can move within a certain range) to the arc-shaped support column 201; with the direction of the front of the vehicle as the front, the flexible connection is mainly achieved by the movable joint 203. In the movable joint 203, since there is a spacing between the limit piece 206 of the pin shaft 204 and the lower end surface of the arc-shaped support column 201, the pin shaft 204 has a certain movable space in the up and down directions; in addition, the inner diameter of the pin shaft 204 is smaller than the length and width of the waist-shaped hole, so the pin shaft 204 is not completely constrained in the waist-shaped hole, but the pin shaft 204 can move a certain distance forward and backward and left and right in the waist-shaped hole, so that the cross beam 202 can move a certain distance forward and backward and left and right in the waist-shaped hole, so that the cross beam 202 can move forward and backward and left and right in the waist-shaped hole. The beam 202 has a certain amount of room for movement in the up and down, left and right, front and back directions; the sealed tail cover 103 is fixedly connected to the cross beam 202, and the outer ring 102 and the sealed tail cover 103 are connected into a whole by connecting bolts. The entire feed and discharge unit 200 is a whole. Due to the action of the floating self-aligning component, the feed and discharge unit 200 is not completely fixed relative to the inner ring, and can float up and down, front and back, left and right within a certain range for compensation. The outer ring 102 will not over-constrain the inner ring, so that the outer ring 102 and the inner ring will not produce abnormal noise or even damage the rotating device due to excessive fit and excessive friction. It can protect the entire rotating device, ensure operation safety, and extend the service life of the device.

[0029] Example 2

[0030] This embodiment is similar to Embodiment 1, except that:

[0031] In this embodiment, if Figure 4 As shown, the floating centering structure is an elastic compensation component 207 connected to both sides of the outer ring 102 close to the end of the vehicle body bracket 212; Figure 5 As shown, the elastic compensation component 207 includes a support bracket 208, a reset device 209 and a support 210. The support bracket 208 is connected to the circumferential outer wall of the outer ring 102, and the support 210 is installed on the vehicle body bracket 212. One end of the reset device 209 is connected to the support bracket 208 and the other end is connected to the support 210; the reset device 209 is a stainless steel spring; in this embodiment, one side of the sealing tail cover 103 is also connected to the outer ring 102 by a hinge 211, which is convenient for opening the sealing tail cover 103 and replacing the seal.

[0032] As an alternative, the elastic compensation component 207 supports the entire feed-in and feed-out unit 200 in the vertical direction. Through the elastic force of the spring up and down and the flexibility of the spring in the front-back and left-right directions, it can also automatically align the outer ring 102 and the entire feed-in and feed-out unit 200, and due to the circumferential restriction of the support bracket 208, it can also stop the circumferential movement of the outer ring 102. In other embodiments, the elastic compensation component can also be connected to the left and right sides of the outer ring or the two sides close to the top, that is, one end of the elastic compensation component is connected to the feed-in and feed-out unit, and the other end is connected to the upper pillars located outside the two sides of the feed-in and feed-out unit; the working principle is the same, but the setting position is different.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rotary automatic centering device for a mining mixer truck, comprising a vehicle body support (212), an inner ring for connecting to a mixing drum (109), and a material inlet and outlet unit (200) covered on the inner ring and rotatably connected to the circumferential outer wall of the inner ring, characterized in that: It also includes a floating centering structure, one end of which is flexibly connected to the feed and discharge unit (200) and the other end is connected to the vehicle body bracket (212); the feed and discharge unit (200) includes an outer ring (102) and a sealing tail cover (103), the circumferential inner wall of the outer ring (102) is rotatably connected to the circumferential outer wall of the inner ring, the sealing tail cover (103) is connected to one end face of the outer ring (102) by connecting bolts distributed in the circumference, and a feed hopper (115) and a discharge mechanism (116) are provided on one end face of the sealing tail cover (103) facing away from the inner ring and the outer ring (102); the floating centering structure The structure comprises arc-shaped support columns (201) located on both sides of the vehicle body support (212) and cross beams (202) fixedly connected to both sides of the sealing tail cover (103); the arc-shaped support columns (201) are located outside the two sides of the sealing tail cover (103); one end of the cross beam (202) is fixedly connected to an end surface of the sealing tail cover (103) facing away from the inner ring, and the other end is connected to the arc-shaped support column (201) through a movable joint (203); the floating centering structure is an elastic compensation component (207) respectively connected to both sides of the outer ring (102) close to one end of the vehicle body support (212).

2. The automatic centering device for rotating agitator truck for mining use according to claim 1 is characterized in that: The movable joint (203) comprises a pin shaft (204) and pin holes (205) respectively arranged at relative positions of the cross beam (202) and the arc-shaped support column (201); the pin shaft (204) can be movably inserted into the pin holes (205) at relative positions of the cross beam (202) and the arc-shaped support column (201); the inner diameter of the pin hole (205) is greater than the outer diameter of the pin shaft (204).

3. The automatic centering device for rotating agitator truck for mining use according to claim 2 is characterized in that: The pin hole (205) is a waist-shaped hole, and the length and width of the waist-shaped hole are both greater than the outer diameter of the pin shaft (204).

4. The automatic centering device for rotating agitator truck for mining use according to claim 2, characterized in that: A limiting member (206) is also installed at one end of the pin shaft (204) passing through the pin hole (205) on the arc-shaped support column (201), and a distance exists between the limiting member (206) and the lower end surface of the arc-shaped support column (201).

5. The automatic centering device for rotating agitator truck for mining use according to claim 1 is characterized in that: The elastic compensation component (207) comprises a support bracket (208), a reset device (209) and a support (210); the support bracket (208) is connected to the circumferential outer wall of the outer ring (102); the support (210) is installed on the vehicle body bracket (212); one end of the reset device (209) is connected to the support bracket (208) and the other end is connected to the support (210).

6. The automatic centering device for rotating agitator truck for mining use according to claim 5, characterized in that: The resetting device (209) is a spring.

7. The automatic centering device for rotating agitator truck for mining use according to claim 6, characterized in that: The spring is a stainless steel spring.

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