Railway lorry-mounted crane with variable structure

Abstract

The invention relates to the technical field of hoisting equipment, in particular to a variable-structure railway lorry-mounted crane which comprises a supporting stand column, and a cargo boom is connected to the supporting stand column; the sliding seat is connected to the cargo boom in a sliding manner, and a hoisting unit is arranged on the sliding seat; the fixed arm is connected with the cargo boom, and the sliding seat is located between the supporting stand column and the fixed arm; the movable arm is movably connected with the fixed arm, and the movable arm can move towards the ground and abut against the ground; the fixing unit is used for fixing the movable arm and is connected with the movable arm; one end of the cargo boom can be supported through the supporting stand column, and the other end of the cargo boom can be supported through the fixed arm and the movable arm, so that the supporting stand column is prevented from bearing large lateral force during hoisting operation, and the possibility of rollover is reduced; the movable arm can be fixed through the fixing unit after the movable arm abuts against the ground, and then the effect of stably supporting the cargo boom is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to a railway truck-mounted crane with a variable structure. Background Art

[0002] Railway truck crane is a special lifting equipment used in railway environment. It combines the characteristics of truck crane and railway vehicle, can move quickly on railway tracks, and perform lifting, loading and unloading, and transportation at the required location. This type of crane is usually equipped with a mechanical arm or hook, and can provide power through a hydraulic or electric system to achieve the lifting, rotation and movement of heavy objects.

[0003] The prior art discloses a railway truck crane, which includes a slewing base. The slewing base is a hollow structure. A conical connecting block is fixedly connected to the top of the slewing base. A track box is fixedly connected to the top of the conical connecting block. The interior of the track box is a hollow structure. A rectangular opening is opened on the top of the track box. A first rack is fixedly connected to the bottom inner wall of the track box. A second rack is fixedly connected to the top inner wall of the track box. The first rack and the second rack are jointly geared with a first gear. A moving plate is installed inside the track box. A plurality of symmetrically distributed bearings are inlaid on the opposite side walls of the moving plate. A first motor is fixedly connected to the bottom inner wall of the moving plate. A first rotating shaft is provided at the output end of the first motor.

[0004] With regard to the above-mentioned related technologies, when lifting, the directional deflection of the fixed arm, the lifting arm and the hook is first achieved through the slewing base. When the hook hangs a heavy object, the gravity of the heavy object acts on the conical connecting block and the slewing base. When the mass of the heavy object is large and the torque of the heavy object acting on the conical connecting block is long, the bearing pressure of the conical connecting block and the slewing base will be large, which poses a certain safety risk. Summary of the invention

[0005] In order to ensure the safety of lifting when lifting heavy objects, the present application provides a railway truck crane with a variable structure.

[0006] The variable structure railway truck crane provided in the present application adopts the following technical solution: A railway truck-mounted crane with a variable structure, comprising: A supporting column, to which a lifting arm is connected, and the lifting arm is arranged horizontally; A sliding seat, the sliding seat is slidably connected to the lifting arm, and a lifting unit is arranged on the sliding seat; A fixed arm, the fixed arm is connected to one end of the lifting arm, and the sliding seat is located between the supporting column and the fixed arm; At least one movable arm, the movable arm is movably connected to the fixed arm, and the movable arm can move toward the ground and abut against the ground; A fixing unit is used for fixing the movable arm, and the fixing unit is connected to the movable arm.

[0007] By adopting the above technical scheme, the supporting column is moved into place by moving the frame, and then force is applied to the movable arm to make the movable arm move toward one side of the ground until the movable arm contacts the ground, and the movable arm is fixed by the fixing unit. At this time, the movable arm and the fixed arm form a far-end support for the lifting arm, and then force is applied to the sliding seat to make the sliding seat slide along the long side direction of the lifting arm. While the sliding seat slides, it drives the lifting unit to move until the lifting unit is aligned with the heavy object, the heavy object is connected to the lifting unit, and the lifting operation can be started; the designed variable structure railway vehicle crane can support one end of the lifting arm by the supporting column, and support the other end of the lifting arm by the fixed arm and the movable arm, thereby avoiding the supporting column from being subjected to a large lateral force during the lifting operation, reducing the possibility of rollover, and the connection between the hook and the heavy object can be achieved by the cooperation of the sliding seat and the lifting unit, and the movable arm can be fixed after the movable arm contacts the ground by the fixing unit, thereby achieving stable support for the lifting arm.

[0008] In a specific feasible implementation scheme, the movable arm includes a fixed section and a sliding section, the fixed section is rotatably connected to the fixed arm, and the rotation axis of the fixed section is horizontally arranged, the sliding section is slidably connected to the fixed section, and the fixed section is threaded with a fixing bolt, and the sliding section is provided with a plurality of fixing holes for the fixing bolts to extend into.

[0009] By adopting the above technical scheme, the supporting column is moved into place by moving the frame, and then force is applied to the fixed section, so that the fixed section and the sliding section move toward one side of the ground until the fixed section and the fixed arm are in the same straight line, and then force is applied to the sliding section until the sliding section abuts against the ground, and then force is applied to the fixing bolt, and the fixing bolt extends into the fixing hole to achieve relative stillness of the sliding section and the fixed section, and then the fixed section is fixed by the fixing unit. At this time, the movable arm and the fixed arm form a far-end support for the lifting arm, and then force is applied to the sliding seat to make the sliding seat slide along the long side direction of the lifting arm. While the sliding seat slides, it drives the lifting unit to move until the lifting unit is aligned with the heavy object, connects the heavy object to the lifting unit, and starts the lifting operation; the designed movable arm can transmit the force at one end of the lifting arm to the ground through the fixed arm, the fixed section and the sliding section through the cooperation of the fixed section and the sliding section, and the relative stillness of the fixed section and the sliding section can be achieved by the fixing bolt.

[0010] In a specific possible implementation manner, the fixing unit includes a plurality of anchor bolts, and the anchor bolts are connected to the sliding section and are disposed through the sliding section.

[0011] By adopting the above technical solution, force is first applied to the fixed section to make the fixed section and the sliding section rotate toward the ground until the fixed section rotates to an appropriate angle, and then force is applied to the sliding section to make the sliding section abut against the ground, and then the anchor bolt is inserted into the soil, thereby avoiding deflection between the movable arm and the fixed arm during lifting of heavy objects, thereby losing support for one end of the fixed arm.

[0012] In a specific embodiment, the lifting unit comprises An electric hoist, the electric hoist is connected to the sliding seat; A lifting rope is connected to the winding roller of the electric hoist, and a lifting hook is connected to the lifting rope.

[0013] By adopting the above technical solution, the designed lifting unit can realize the winding and releasing of the lifting rope through the electric hoist, and the lifting operation of the heavy object can be realized through the cooperation of the lifting rope and the hook.

[0014] In a specific embodiment, the support column comprises An outer cylinder, wherein the outer cylinder is hollow and the upper end of the outer cylinder is open; An inner cylinder, the inner cylinder extends into the inner cavity of the outer cylinder, and the inner cylinder is slidably connected to the outer cylinder; A lifting member is used for driving the inner cylinder to lift and lower, wherein the lifting member is connected to the outer cylinder, and the lifting member is connected to the inner cylinder.

[0015] By adopting the above technical solution, a supporting column is designed, in which the outer column can provide a movement guide for the inner column, the fixed arm can be installed through the inner column, and the inner column can be driven to rise and fall through the lifting part, thereby adapting to different lifting scenarios.

[0016] In a specific possible implementation manner, the extended end of the inner cylinder is rotatably connected to a swivel seat, the rotation axis of the swivel seat is coaxially arranged with the outer cylinder, and the lifting arm is connected to the swivel seat.

[0017] By adopting the above technical solution, the designed slewing seat can realize the rotation of the crane arm, thereby improving the operating flexibility of the crane.

[0018] In a specific feasible implementation scheme, the lifting arm is slidably connected to the rotating seat, and a sliding motor is connected to the rotating seat, a sliding gear is coaxially connected to the output shaft of the sliding motor, a linear rack is embedded in the lifting arm, and the sliding gear passes through the rotating seat and engages with the linear rack.

[0019] By adopting the above technical solution, an external power supply provides electric energy for the sliding motor. The output shaft of the sliding motor rotates to drive the sliding gear to rotate. While the sliding gear rotates, it engages with the linear rack, causing relative sliding between the lifting arm and the slewing dome, thereby changing the landing point of the hook in the lifting unit, and at the same time, it can also change the torque of the weight acting on the supporting column.

[0020] In a specific possible implementation scheme, it also includes a transverse sliding rail, the support column is slidably connected to the transverse sliding rail, and the transverse sliding rail is used to connect to the frame.

[0021] By adopting the above technical solution, the designed transverse slide rail can further facilitate the alignment of the hook and the weight.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed variable structure railway truck crane can support one end of the boom through the supporting column, and support the other end of the boom through the fixed arm and the movable arm, thereby avoiding the supporting column from being subjected to a large lateral force during the lifting operation and reducing the possibility of rollover. The connection between the hook and the weight can be achieved through the cooperation of the sliding seat and the lifting unit, and the movable arm can be fixed after the movable arm contacts the ground through the fixing unit, thereby achieving stable support for the boom.

[0023] 2. The designed variable structure railway crane first applies force to the fixed section to make the fixed section and the sliding section rotate toward the ground until the fixed section rotates to an appropriate angle, then applies force to the sliding section to make the sliding section contact the ground, and then inserts the anchor bolts into the soil to avoid deflection between the movable arm and the fixed arm during lifting of heavy objects, thereby losing support for one end of the fixed arm.

[0024] 3. The designed variable structure railway truck crane can provide a motion guide for the inner column through the outer column, the fixed arm can be installed through the inner column, and the inner column can be driven to rise and fall through the lifting parts, thereby adapting to different lifting scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a railway truck-mounted crane with a variable structure according to an embodiment of the present application.

[0026] Figure 2 is Figure 1 Schematic diagram of the structure after adding a transverse slide rail to the foundation.

[0027] Figure 3 yes Figure 2 Sectional view in .

[0028] Figure 4 is Figure 2 Schematic diagram of the working status of the movable arm after it is unfolded.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Support column; 11. Outer column; 12. Inner column; 13. Lifting member; 2. Lifting arm; 21. Linear rack; 3. Sliding seat; 4. Lifting unit; 41. Electric hoist; 42. Lifting rope; 43. Hook; 5. Fixed arm; 6. Movable arm; 61. Fixed section; 62. Sliding section; 621. Fixing hole; 63. Fixing bolt; 7. Fixing unit; 71. Anchor bolt; 8. Swivel seat; 81. Sliding motor; 82. Sliding gear; 9. Transverse slide rail. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The embodiment of the present application discloses a railway truck-mounted crane with a variable structure.

[0032] Reference Figure 1 A railway truck crane with a variable structure includes a supporting column 1, a lifting arm 2, a fixed arm 5 and at least one movable arm 6, one end of the lifting arm 2 is connected to the supporting column 1, and the other end is connected to the fixed arm 5, and the axial direction of the supporting column 1 is vertically arranged, and the movable arm 6 is movably connected to the fixed arm 5. During the lifting operation, the movable arm 6 is changed. The position of the movable arm 6 is made to abut against the ground. At this time, the movable arm 6 and the fixed arm 5 cooperate to achieve the support of the lifting arm 2 away from one end of the supporting column 1; in the present application, the cross-sectional shape of the supporting column 1 can be circular, rectangular, or other shapes. In the present embodiment, it is preferably rectangular. One end of the lifting arm 2 can be supported by the supporting column 1, and the other end of the lifting arm 2 can be supported by the fixed arm 5 and the movable arm 6, thereby avoiding the supporting column 1 from being subjected to a large lateral force during the lifting operation and reducing the possibility of rollover.

[0033] Reference Figure 1Furthermore, in order to realize the lifting operation of heavy objects, the variable-structure railway vehicle-mounted crane also includes a sliding seat 3 and a lifting unit 4. The sliding seat 3 is located between the fixed arm 5 and the supporting column 1, and the sliding seat 3 is slidably connected to the lifting arm 2. The lifting unit 4 is connected to the sliding seat 3. By changing the position of the sliding seat 3, the lifting unit 4 can be aligned with the heavy object; the supporting column 1 is moved into place by moving the frame, and then force is applied to the movable arm 6 to make the movable arm 6 move toward one side of the ground until the movable arm 6 abuts against the ground, and the movable arm 6 is moved to the ground by the fixed unit 7. The movable arm 6 is fixed. At this time, the movable arm 6 and the fixed arm 5 form a distal support for the lifting arm 2. Then force is applied to the sliding seat 3 to make the sliding seat 3 slide along the long side direction of the lifting arm 2. While the sliding seat 3 slides, it drives the lifting unit 4 to move until the lifting unit 4 is aligned with the heavy object. The heavy object is connected to the lifting unit 4, and the lifting operation is started. The connection between the hook 43 and the heavy object can be achieved through the cooperation of the sliding seat 3 and the lifting unit 4. The movable arm 6 can be fixed after it abuts against the ground through the fixed unit 7, thereby achieving stable support for the lifting arm 2.

[0034] Reference Figure 1 Specifically, the lifting unit 4 includes an electric hoist 41, a lifting rope 42 and a hook 43. The electric hoist 41 is bolted to the sliding seat 3, the lifting rope 42 is connected to the winding roller of the electric hoist 41, the lifting rope 42 is fixedly connected to the hook 43, and an external power supply provides power for the electric hoist 41. The electric hoist 41 drives the hook 43 to rise and fall through the lifting rope 42, thereby realizing the lifting and lowering of heavy objects; the lifting rope 42 can be wound and released through the electric hoist 41, and the lifting operation of heavy objects can be realized through the cooperation of the lifting rope 42 and the hook 43.

[0035] Reference Figure 2 and Figure 3 In order to increase the flexibility of use and the adaptability of the crane to different scenarios, the variable-structure railway truck crane also includes a transverse slide rail 9, which is bolted to the frame, and the support column 1 is slidably connected to the transverse slide rail 9; further, the support column 1 includes an outer column 11, an inner column 12 and a lifting member 13, the lower end of the outer column 11 is slidably connected to the transverse slide rail 9, and the outer column 11 is hollow, and the end of the outer column 11 away from the transverse slide rail 9 is open, the inner column 12 extends into the inner cavity of the outer column 11, and the inner column 12 is slidably connected to the outer column 11, the lifting member 13 is connected to the outer column 11, and the lifting member 13 is connected to the inner column 12, for driving the inner column 12 to rise and fall. In the present application, the lifting member 13 can be a hydraulic cylinder, a pneumatic cylinder, or other equipment that can realize the lifting of the inner column 12. In the present embodiment, the lifting member 13 is preferably a hydraulic cylinder.

[0036] Reference Figure 2 and Figure 3Furthermore, the protruding end of the inner cylinder 12 extending out of the outer cylinder 11 is rotatably connected to a swivel seat 8, the rotation axis of the swivel seat 8 is coaxially arranged with the outer cylinder 11, and the lifting arm 2 is connected to the supporting column 1 through the swivel seat 8; in the present application, a swivel motor is bolted to the swivel seat 8, a swivel gear is coaxially keyed on the output shaft of the swivel motor, an annular rack is coaxially connected to the inner cylinder 12, and the swivel gear is meshed with the annular rack; the outer cylinder 11 can provide a motion guide for the inner cylinder 12, the fixed arm 5 can be installed through the inner cylinder 12, and the inner cylinder 12 can be driven to rise and fall through the lifting member 13, thereby adapting to different lifting scenarios.

[0037] Reference Figure 3 In order to adjust the torque of the heavy object on the supporting column 1, the boom 2 is slidably connected to the slewing seat 8, and a sliding motor 81 is bolted on the slewing seat 8. A sliding gear 82 is coaxially keyed on the output shaft of the sliding motor 81. A linear rack 21 is embedded in the top wall of the boom 2. A clearance groove is provided on the slewing seat 8. The sliding gear 82 passes through the clearance groove and meshes with the linear rack 21. An external power supply provides power for the sliding motor 81. The output shaft of the sliding motor 81 rotates to drive the sliding gear 82 to rotate. The sliding gear 82 rotates and meshes with the linear rack 21, so that relative sliding occurs between the boom 2 and the slewing seat, thereby changing the landing point of the hook 43 in the lifting unit 4, and at the same time, it can also change the torque of the heavy object on the supporting column 1.

[0038] Reference Figure 4Specifically, the movable arm 6 includes a fixed section 61 and a sliding section 62, the fixed section 61 is hinged to the fixed arm 5, and the rotation axis of the fixed section 61 is horizontally arranged and consistent with the long side direction of the lifting arm 2, the sliding section 62 is slidably connected to the fixed section 61, and a plurality of fixing holes 621 are opened on the sliding section 62, and the plurality of fixing holes 621 are distributed along the long side direction of the sliding section 62, and a fixing bolt 63 is threadedly connected to the fixed section 61, and the fixing bolt 63 can be inserted into the fixing hole 621 to fix the sliding section 62; in the present application, the number of movable arms 6 can be one, two, or other numbers, as long as it can cooperate with the fixed arm 5 to support one end of the lifting arm 2. In the present embodiment, the number of movable arms 6 is preferably two; by moving the frame so that The supporting column 1 moves into position, and then applies force to the fixed section 61, so that the fixed section 61 and the sliding section 62 move toward the ground side until the fixed section 61 and the fixed arm 5 are in the same straight line, and then applies force to the sliding section 62 until the sliding section 62 abuts against the ground, and then applies force to the fixing bolt 63, and the fixing bolt 63 extends into the fixing hole 621 to achieve relative stillness of the sliding section 62 and the fixed section 61, and then fixes the fixed section 61 by the fixing unit 7. At this time, the movable arm 6 and the fixed arm 5 form a distal support for the lifting arm 2, and then applies force to the sliding seat 3 to make the sliding seat 3 slide along the long side direction of the lifting arm 2. While the sliding seat 3 slides, it drives the lifting unit 4 to move until the lifting unit 4 is aligned with the heavy object, connects the heavy object to the lifting unit 4, and starts the lifting operation.

[0039] Reference Figure 4 On this basis, in order to avoid the sliding section 62 from deflecting during the lifting operation and to ensure the stability of the support for both ends of the lifting arm 2, the variable structure railway truck crane also includes a fixing unit 7, which is connected to the movable arm 6 and is used to fix the movable arm 6. Specifically, the fixing unit 7 includes a plurality of anchor bolts 71, which are threadedly connected to the sliding section 62, and the anchor bolts 71 are arranged through the sliding section 62. When the sliding section 62 abuts against the ground, the anchor bolts 71 are inserted into the soil; first, force is applied to the fixing section 61 to rotate the fixing section 61 and the sliding section 62 toward the ground until the fixing section 61 rotates to an appropriate angle, and then force is applied to the sliding section 62 to make the sliding section 62 abut against the ground, and then the anchor bolts 71 are inserted into the soil to avoid deflection between the movable arm 6 and the fixed arm 5 during lifting of heavy objects, thereby losing support for one end of the fixed arm 5.

[0040] The implementation principle of a variable structure railway truck crane in the embodiment of the present application is as follows: the supporting column 1 is moved into position by moving the frame, and force is first applied to the fixed section 61 to make the fixed section 61 and the sliding section 62 rotate toward the ground side until the fixed section 61 rotates to an appropriate angle, and then force is applied to the sliding section 62 to make the sliding section 62 abut against the ground, and then force is applied to the fixing bolt 63, and the fixing bolt 63 extends into the fixing hole 621 to achieve relative stillness of the sliding section 62 and the fixed section 61, and then the anchor bolt 71 is inserted into the soil to avoid deflection between the movable arm 6 and the fixed arm 5 during lifting of heavy objects, thereby losing support for one end of the fixed arm 5. At this time, the movable arm 6 and the fixed arm 5 form a far-end support for the lifting arm 2, and then the external power supply provides power for the sliding motor 81 to work, and the output shaft of the sliding motor 81 rotates to drive The sliding gear 82 rotates, and the sliding gear 82 meshes with the linear rack 21, so that the sliding seat 3 slides along the long side direction of the crane arm 2. The sliding seat 3 drives the electric hoist 41 to move while sliding. The electric hoist 41 drives the hook 43 to move through the lifting rope 42 until the hook 43 is aligned with the heavy object, and the heavy object is connected to the hook 43, and the lifting operation can be started; one end of the crane arm 2 can be supported by the supporting column 1, and the other end of the crane arm 2 can be supported by the fixed arm 5 and the movable arm 6, thereby avoiding the supporting column 1 from being subjected to a large lateral force during the lifting operation and reducing the possibility of rollover. The connection between the hook 43 and the heavy object can be achieved by the cooperation of the sliding seat 3 and the lifting unit 4, and the movable arm 6 can be fixed after it abuts against the ground by the fixed unit 7, thereby achieving stable support for the crane arm 2.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A railway crane with a variable structure, characterized in that: include A supporting column (1), wherein a lifting arm (2) is connected to the supporting column (1), and the lifting arm (2) is arranged horizontally; A sliding seat (3), the sliding seat (3) is slidably connected to the lifting arm (2), and a lifting unit (4) is arranged on the sliding seat (3); A fixed arm (5), the fixed arm (5) being connected to one end of the lifting arm (2), and the sliding seat (3) being located between the supporting column (1) and the fixed arm (5); at least one movable arm (6), the movable arm (6) being movably connected to the fixed arm (5), and the movable arm (6) being capable of moving toward the ground and abutting against the ground; A fixing unit (7) for fixing the movable arm (6), wherein the fixing unit (7) is connected to the movable arm (6).

2. The variable structure railway truck mounted crane according to claim 1, characterized in that: The movable arm (6) comprises a fixed section (61) and a sliding section (62); the fixed section (61) is rotatably connected to the fixed arm (5), and the rotation axis of the fixed section (61) is arranged horizontally; the sliding section (62) is slidably connected to the fixed section (61), and a fixing bolt (63) is threadedly connected to the fixed section (61); and a plurality of fixing holes (621) for the fixing bolts (63) to extend into are provided on the sliding section (62).

3. The variable structure railway truck mounted crane according to claim 2, characterized in that: The fixing unit (7) comprises a plurality of anchor bolts (71), wherein the anchor bolts (71) are connected to the sliding section (62) and are disposed through the sliding section (62).

4. The variable structure railway truck mounted crane according to claim 1, characterized in that: The lifting unit (4) comprises An electric hoist (41), the electric hoist (41) being connected to the sliding seat (3); A lifting rope (42), wherein the lifting rope (42) is connected to the winding roller of the electric hoist (41), and a lifting hook (43) is connected to the lifting rope (42).

5. The variable structure railway truck mounted crane according to claim 1, characterized in that: The support column (1) comprises An outer column (11), wherein the outer column (11) is hollow and the upper end of the outer column (11) is open; An inner cylinder (12), the inner cylinder (12) extending into the inner cavity of the outer cylinder (11), and the inner cylinder (12) and the outer cylinder (11) are slidably connected; A lifting member (13) is used for driving the inner column (12) to rise and fall, wherein the lifting member (13) is connected to the outer column (11), and the lifting member (13) is connected to the inner column (12).

6. The variable structure railway truck mounted crane according to claim 5, characterized in that: The protruding end of the inner column (12) is rotatably connected to a swivel seat (8), the rotation axis of the swivel seat (8) is coaxially arranged with the outer column (11), and the lifting arm (2) is connected to the swivel seat (8).

7. The variable structure railway truck mounted crane according to claim 6, characterized in that: The lifting arm (2) is slidably connected to the swivel seat (8), and a sliding motor (81) is connected to the swivel seat (8). A sliding gear (82) is coaxially connected to the output shaft of the sliding motor (81). A linear rack (21) is embedded in the lifting arm (2), and the sliding gear (82) passes through the swivel seat (8) and meshes with the linear rack (21).

8. The variable structure railway truck mounted crane according to any one of claims 1 to 7, characterized in that: It also comprises a transverse sliding rail (9), the supporting column (1) is slidably connected to the transverse sliding rail (9), and the transverse sliding rail (9) is used to be connected to the vehicle frame.

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