Rack extension device

Abstract

The utility model relates to the technical field of machine frame assembly, in particular to a machine frame extending device which comprises a skid, a rotary supporting leg and a sliding driving piece, a machine frame assembly platform is connected with the skid, and the rotary supporting leg is arranged on the skid and used for making rolling contact with a machine frame unit. The output end of the sliding driving piece is connected with the skid, and the sliding driving piece can drive the skid to move in the extending direction so that the rack unit can move relative to the rotary supporting leg under the action of friction force. In the machine frame extension operation, the operation is simple, the whole extension operation can be completed at one station, the time required by the extension operation is reduced, and the improvement of the operation efficiency is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rack assembly, in particular to a rack extension device. Background Art

[0002] With the increasing adoption of continuous belt conveyors in coal mining projects, the extension and installation of the continuous belt conveyor frame during construction has become labor-intensive. This is incompatible with the coal mining industry's principle of reducing the number of workers. Currently, the belt conveyor extension process, including the docking of the belt conveyor longitudinal beams and the installation of roller assemblies, has been automated. However, how to simultaneously install the longitudinal beam legs at a single station and achieve smooth docking and automated extension of the longitudinal beam system consisting of the longitudinal beam, roller assemblies, and longitudinal beam legs, remains a technical challenge facing those skilled in the art.

[0003] The existing patents for belt conveyor extension devices mainly provide a comprehensive explanation of the automated assembly of longitudinal beams, roller assemblies and longitudinal beam legs. The assembly of longitudinal beams and roller assemblies is mainly completed at one workstation, and then the assembly is slid to another workstation to complete the installation of longitudinal beam legs. This takes a long time and has low efficiency. It has not yet met the requirement of directly completing the assembly of the entire longitudinal beam system and automatically extending it at one workstation. The operating principle and functional structure of the mechanism are not universal.

[0004] Therefore, it is necessary to provide a new rack extension device to solve the above technical problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a rack extension device, aiming to solve the problems of complex operation and long operation time of the existing rack extension device.

[0006] To achieve the above-mentioned purpose, the rack extension device proposed in the present invention is used to extend the length of the rack assembly, the rack assembly is set on the ground, the rack assembly includes one or more rack units connected in sequence, the rack extension device includes a skid, a rotating leg and a sliding drive member, the skid is slidably set on the ground; the rotating leg is set on the skid, and the rotating leg is used to roll in contact with the rack unit; the output end of the sliding drive member is connected to the skid, and the sliding drive member can drive the skid to move along the extension direction so that the rack unit moves relative to the rotating leg under the action of friction.

[0007] Optionally, the rotating leg includes a single leg piece, and the single leg piece includes a support rod and a rotating tray. The support rod is arranged on the slide, and an extension seat is provided on the support rod. The extension seat is arranged along the width direction of the slide; the rotating tray is rotatably arranged on the extension seat.

[0008] Optionally, the rotating pallet includes a rotating body and a pallet body arranged on the rotating body, the rotating body is rotatably arranged on the extension seat, and four or more supporting arms are provided on the pallet body, and the four or more supporting arms are circumferentially arranged with the rotating body as the center of the circle.

[0009] Optionally, the outer periphery of the supporting arm is provided with a stepped surface; the rotating pallet also includes a sleeve and a stop block arranged corresponding to the supporting arm, the sleeve is sleeved on the supporting arm and is rotatably connected to the supporting arm, the sleeve is used for rolling contact with the rack unit, the stop block is arranged at one end of the supporting arm away from the rotating body, and the sleeve is located between the stepped surface and the stop block.

[0010] Optionally, the rotating body includes a rotating shaft, a sleeve, a washer and a locking piece. The rotating shaft is detachably arranged on the extension seat. The sleeve, the washer and the locking piece are sequentially sleeved on the rotating shaft from bottom to top, and the sleeve is rotatably connected to the rotating shaft. The supporting arm is arranged on the sleeve, and the locking piece is threadedly connected to the rotating shaft.

[0011] Optionally, the rotating body further includes a pad, which is sleeved on the rotating shaft and disposed between the shaft sleeve and the extension seat.

[0012] Optionally, the rack extension device further includes a rack assembly platform, the rack assembly platform is connected to the skid, and the rack assembly platform is used to assemble a rack unit.

[0013] Optionally, the rotating leg includes at least two leg single pieces, the two leg single pieces are arranged opposite to each other on both sides of the skid, and the two leg single pieces cooperate to support the rack unit.

[0014] Optionally, there are multiple rotating legs, and the multiple rotating legs are arranged on the skid at intervals along the length direction of the skid.

[0015] In the technical solution of the present invention, after the assembled rack unit is placed on the rotating leg, the sliding drive member drives the skid to move in the extension direction. Under the action of the sliding drive member, the rack unit can continue to slide relative to the rotating leg until it aligns with the assembly hole of a rack unit at the end of the rack assembly. Then, the fastener is inserted through the assembly holes of the two rack units and locked to connect the two rack units, thus completing the extension of one rack unit in the rack assembly. Repeating this operation can extend the length of the rack assembly indefinitely. The rack extension operation of the present invention is simple to operate and can be completed in one workstation, reducing the time required for the extension operation and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of a rack extension device in an embodiment of the present utility model;

[0018] Figure 2 This is a top view of the rack extension device in an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of a rotating tray in an embodiment of the present utility model;

[0020] Figure 4 This is an exploded view of the rotating tray in the embodiment of the present utility model;

[0021] Figure 5 This is another structural diagram of the rack extension device in an embodiment of the present utility model.

[0022] Description of Figure Numbers:

[0023] 1 rack unit, 1.1 rack leg, 2 skid, 3 leg unit, 3.1 support rod, 3.1.1 extension base, 3.2 rotating tray, 3.2.1 rotating body, A1 shaft, A2 bushing, A3 washer, A4 locking piece, 3.2.2 tray body, B1 support arm, 3.2.3 sleeve, 3.2.4 stopper, C1 horizontal surface, 3.2.5 pad, 4 rack assembly platform.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] The utility model provides a rack extension device, aiming to solve the problems of complex operation and long operation time of the existing rack extension device.

[0027] like Figure 1 and Figure 2As shown, this embodiment provides a rack extension device for extending the length of a rack assembly, wherein the rack assembly is arranged on the ground, and the rack assembly includes one or more rack units 1 connected in sequence, and the rack extension device includes a sled 2, a rotating leg and a sliding drive, wherein the sled 2 is slidably arranged on the ground; the rotating leg is arranged on the sled 2, and the rotating leg is used for rolling contact with the rack unit 1; the output end of the sliding drive is connected to the sled 2, and the sliding drive can drive the sled 2 to move along the extension direction so that the rack unit 1 moves relative to the rotating leg under the action of friction.

[0028] In actual operation, after the assembled rack unit 1 is placed on the rotating leg, the sliding drive member drives the skid 2 to move in the extension direction. Under the action of the sliding drive member, the rack unit 1 can continue to slide relative to the rotating leg until it aligns with the assembly hole of a rack unit 1 at the end of the rack assembly. The fasteners are then passed through the assembly holes of the two rack units 1 and locked to connect the two rack units 1, thus completing the extension of one rack unit 1 in the rack assembly. Repeating this operation can extend the length of the rack assembly indefinitely. After the extension operation is completed, the rearmost rack unit is then aligned with the material loading and unloading area to facilitate material transportation. The rack extension operation is simple to operate and can be completed in one workstation, reducing the time required for the extension operation and helping to improve work efficiency.

[0029] The rotating leg comprises a single leg member 3, which includes a support rod 3.1 and a rotating tray 3.2. The support rod 3.1 is mounted on the sled 2 and has an extension seat 3.1.1 disposed along the width of the sled 2. The rotating tray 3.2 is rotatably mounted on the extension seat 3.1.1. When the sliding drive moves the sled 2, the friction between the rotating tray 3.2 and the rack unit 1 drives the rotating tray 3.2 to rotate, preventing the rack unit 1 from sliding against the rotating tray 3.2, thereby improving the efficiency of the extension operation.

[0030] like Figure 3 As shown, the rotating tray 3.2 includes a rotating body 3.2.1 and a tray body 3.2.2 mounted on the rotating body 3.2.1. The rotating body 3.2.1 is rotatably mounted on the extension base 3.1.1. The tray body 3.2.2 is provided with four or more supporting arms B1, which are arranged circumferentially with the rotating body 3.2.1 as the center. At least four supporting arms B1 are provided on the tray body 3.2.2 to ensure that when the rotating tray 3.2 rotates and the previous supporting arm B1 is separated from the rack unit 1, the adjacent supporting arm B1 can take over the supporting rack unit 1, thereby ensuring the stable fit between the rack unit 1 and the rotating tray 3.2 and facilitating the smooth movement of the rack unit 1 from the rotating legs to the ground.

[0031] like Figure 4 As shown, the outer periphery of the supporting arm B1 is provided with a stepped surface; the rotating tray 3.2 also includes a sleeve 3.2.3 and a stopper 3.2.4 arranged corresponding to the supporting arm B1, the sleeve 3.2.3 is sleeved on the supporting arm B1 and is rotatably connected to the supporting arm B1, the sleeve 3.2.3 is used for rolling contact with the rack unit 1, and the stopper 3.2.4 is arranged at one end of the supporting arm B1 away from the rotating body 3.2.1, and the sleeve 3.2.3 is located between the stepped surface and the stopper 3.2.4. Stopper 3.2.4 cooperates with the stepped surface on support arm B1 to limit the position of sleeve 3.2.3, thereby achieving rolling contact between rotating tray 3.2 and rack unit 1 through the conduit. Stopper 3.2.4 is detachably connected to support arm B1, facilitating replacement of sleeve 3.2.3 and preventing wear of sleeve 3.2.3, which increases friction and hinders relative sliding between rack unit 1 and rotating tray 3.2. Rack unit 1 is provided with rack legs 1.1. When rack unit 1 slides, rack legs 1.1 abut against sleeve 3.2.3 on support arm B1, pushing rotating tray 3.2 to rotate, thereby avoiding interference between rack unit 1 and the extended sliding device. Preferably, stopper 3.2.4 is provided with two parallel horizontal surfaces C1, which can provide a clearance when support arm B1 rotates below rack unit 1.

[0032] Specifically, the rotating body 3.2.1 includes a rotating shaft A1, a sleeve A2, a washer A3, and a locking member A4. The rotating shaft A1 is detachably mounted on the extension base 3.1.1. The sleeve A2, washer A3, and locking member A4 are sequentially mounted on the rotating shaft A1 from bottom to top. The sleeve A2 is rotatably connected to the rotating shaft A1. The support arm B1 is mounted on the sleeve A2, and the locking member A4 is threadedly connected to the rotating shaft A1. The washer A3 and locking member A4 both protect the sleeve A2 and enhance the overall structural strength of the rotating body 3.2.1. The rotating body 3.2.1 is detachably connected to the extension base 3.1.1 via the rotating shaft A1, facilitating the replacement of rotating trays 3.2 of different sizes, thereby accommodating different types of rack units 1 and expanding the applicability of the rack extension device.

[0033] Furthermore, the rotating body 3.2.1 also includes a pad 3.2.5, which is sleeved on the rotating shaft A1 and arranged between the shaft sleeve A2 and the extension seat 3.1.1. The pad 3.2.5 can play a role in preventing wear between the shaft sleeve A2 and the extension seat 3.1.1, thereby extending the service life of the components.

[0034] In this embodiment, see Figure 5The rack extension device also includes a rack assembly platform 4 connected to the skid 2. The rack assembly platform 4 is used to assemble the rack unit 1. After the rack unit is assembled on the rack assembly platform 4, the sliding drive member drives the skid and the rack assembly platform 4 to move along the extension direction, so that the rack unit 1 on the rack assembly platform 4 moves onto the rotating legs to facilitate docking with the previous rack unit 1.

[0035] Furthermore, the rotating leg includes at least two leg pieces 3, which are arranged on opposite sides of the skid 2 and cooperate to support the rack unit 1. The two leg pieces 3 support both sides of the rack unit 1 along its width, thereby effectively ensuring the stability of the rack unit 1 and distributing the force, thereby preventing wear and deformation of the individual leg pieces 3 during long-term operation.

[0036] In addition, there are multiple rotating legs, which are spaced apart along the length of the sled 2. The multiple rotating legs cooperate to support the rack unit 1, which can not only enhance the stability of the rack unit 1 when supporting it, but also adapt to the operation of a large-sized rack unit 1.

[0037] In this embodiment, the sliding drive component is the front self-moving tail cylinder; the frame unit 1 is a longitudinal beam unit, which includes a longitudinal beam, a longitudinal beam leg and a roller assembly. The roller assembly is connected between the two longitudinal beams, and the longitudinal beam leg is set on the ground to support the entire longitudinal beam unit. When the longitudinal beam unit slides relative to the rotating leg, the longitudinal beam leg abuts against the sleeve 3.2.3 on the supporting arm B1 to push the rotating tray 3.2 to rotate, thereby avoiding interference between the longitudinal beam unit and the extended sliding device.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rack extension device for extending the length of a rack assembly, wherein the rack assembly is arranged on the ground, and the rack assembly comprises one or more rack units (1) connected in sequence, characterized in that: The frame extension device comprises a skid (2), a rotating leg and a sliding drive member, The skid (2) is slidably arranged on the ground; the rotating legs are arranged on the skid (2), and the rotating legs are used for rolling contact with the rack unit (1); The output end of the sliding drive is connected to the slide (2), and the sliding drive can drive the slide (2) to move along the extension direction so that the rack unit (1) moves relative to the rotating leg under the action of friction.

2. The rack extension device according to claim 1, wherein: The rotating leg comprises a single leg piece (3), the single leg piece (3) comprises a support rod (3.1) and a rotating tray (3.2), the support rod (3.1) is arranged on the sled (2), an extension seat (3.1.1) is provided on the support rod (3.1), and the extension seat (3.1.1) is arranged along the width direction of the sled (2); the rotating tray (3.2) is rotatably arranged on the extension seat (3.1.1).

3. The rack extension device according to claim 2, wherein: The rotating tray (3.2) comprises a rotating body (3.2.1) and a tray body (3.2.2) arranged on the rotating body (3.2.1); the rotating body (3.2.1) is rotatably arranged on the extension seat (3.1.1); four or more supporting arms (B1) are provided on the tray body (3.2.2); the four or more supporting arms (B1) are circumferentially arranged with the rotating body (3.2.1) as the center of the circle.

4. The rack extension device according to claim 3, wherein: The outer periphery of the supporting arm (B1) is provided with a stepped surface; the rotating tray (3.2) further comprises a sleeve (3.2.3) and a stopper (3.2.4) arranged corresponding to the supporting arm (B1); the sleeve (3.2.3) is sleeved on the supporting arm (B1) and is rotatably connected to the supporting arm (B1); the sleeve (3.2.3) is used for rolling contact with the rack unit (1); the stopper (3.2.4) is arranged at one end of the supporting arm (B1) away from the rotating body (3.2.1); the sleeve (3.2.3) is located between the stepped surface and the stopper (3.2.4).

5. The rack extension device according to claim 4, wherein: The rotating body (3.2.1) includes a rotating shaft (A1), a sleeve (A2), a washer (A3) and a locking piece (A4); the rotating shaft (A1) is detachably arranged on the extension seat (3.1.1); the sleeve (A2), the washer (A3) and the locking piece (A4) are sequentially sleeved on the rotating shaft (A1) from bottom to top, and the sleeve (A2) is rotatably connected to the rotating shaft (A1); the supporting arm (B1) is arranged on the sleeve (A2), and the locking piece (A4) is threadedly connected to the rotating shaft (A1).

6. The rack extension device according to claim 5, wherein: The rotating body (3.2.1) further comprises a pad (3.2.5), which is sleeved on the rotating shaft (A1) and arranged between the shaft sleeve (A2) and the extension seat (3.1.1).

7. The rack extension device according to any one of claims 1 to 6, characterized in that: The rack extension device further comprises a rack assembly platform (4), the rack assembly platform (4) is connected to the skid (2), and the rack assembly platform (4) is used to assemble a rack unit (1).

8. The rack extension device according to any one of claims 1 to 6, wherein: The rotating support leg comprises at least two support leg single pieces (3), the two support leg single pieces (3) being arranged oppositely on both sides of the skid (2), and the two support leg single pieces (3) being cooperated to support the frame unit (1).

9. The rack extension device according to claim 8, wherein: There are multiple rotating legs, and the multiple rotating legs are arranged on the slide (2) at intervals along the length direction of the slide (2).

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