Electric hoist single-beam portal crane

Abstract

The utility model provides an electric hoist single-beam portal crane which comprises a cross beam, stand columns are arranged at the bottoms of the two ends of the cross beam, a bottom beam is fixedly arranged at the bottom ends of the stand columns, an electric hoist is arranged on the cross beam in a sliding mode, a lifting hook is arranged below the electric hoist in a hanging mode, and a sliding base is fixedly arranged at the top of the lifting hook. A sliding rod parallel to the cross beam is slidably arranged in the sliding seat, sliding sleeve assemblies slidably arranged on the outer sides of the stand columns in a sleeving mode are fixedly arranged at the two ends of the sliding rod, buffer limiting mechanisms are arranged on the side faces of the sliding sleeve assemblies, and top beams corresponding to the buffer limiting mechanisms are arranged at the upper ends of the stand columns. When the electric hoist moves along the cross beam, the lifting hook moves on the outer side of the sliding rod through the sliding seat, and when the electric hoist lifts or descends the lifting hook, the lifting hook drives the sliding sleeve assembly to slide on the outer side of the stand column through the sliding rod, so that the stability of the lifting hook is improved, meanwhile, lifting of a lifted object by the electric hoist is not affected, and safe and stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and particularly relates to an electric hoist single-girder gantry crane. Background Art

[0002] An electric hoist single-girder gantry crane usually has a gantry frame composed of a main girder and legs. An electric hoist assembly is slidably arranged on the cross beam. The motor in the electric hoist assembly drives a gear system to drive a drum to rotate, and a steel wire rope realizes the lifting and lowering of heavy objects through a pulley block.

[0003] In the prior art, the hook is connected between the steel wire rope and the drum. The stability of the hook is poor. During the lifting process, the hook easily drives the lifting rope to swing, which will aggravate the wear of the steel wire rope, cause damage to equipment components, and there is a risk of the lifted object unhooking and falling.

[0004] Therefore, it is necessary to design an electric hoist single-girder gantry crane that can improve the stability of the hook and ensure the safe and stable operation of the equipment to solve the current technical problems. Summary of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides an electric hoist single-girder gantry crane that can improve the stability of the hook and ensure the safe and stable operation of the equipment.

[0006] The technical solution of the utility model is: an electric hoist single-girder gantry crane, including a cross beam. Columns are arranged at the bottoms of both ends of the cross beam. A bottom beam is fixedly arranged at the bottom ends of the columns. An electric hoist is slidably arranged on the cross beam. A hook is suspended below the electric hoist. A sliding seat is fixedly arranged at the top of the hook. A sliding rod parallel to the cross beam is slidably arranged inside the sliding seat. Both ends of the sliding rod are fixedly provided with sliding sleeve assemblies slidably sleeved outside the columns. A buffer limiting mechanism is arranged on the side of the sliding sleeve assembly. A top beam corresponding to the buffer limiting mechanism is arranged at the upper end of the column; the buffer limiting mechanism has two guide rods corresponding to the bottom beam and the top beam respectively. The guide rods are slidably connected to one side of the sliding sleeve assembly. A blocking rod is slidably arranged horizontally in the middle of the sliding sleeve assembly between the two guide rods. A detection component for detecting the movement of the blocking rod is arranged on the sliding sleeve assembly.

[0007] Further, a buffer seat is slidably sleeved outside the guide rod. The buffer seat is fixedly arranged on one side of the sliding sleeve assembly. A support plate is fixedly arranged at one end of the guide rod away from the blocking rod. A spring is sleeved outside the guide rod between the support plate and the buffer seat.

[0008] Further, one end of the guide rod close to the stop rod is hinged with a connecting rod. One end of the connecting rod away from the guide rod is hinged with the end of the stop rod. A stop rod support is slidably sleeved outside the stop rod, and the stop rod support is fixedly arranged outside the sliding sleeve assembly.

[0009] Further, a buffer head is fixedly arranged on one side of the support plate away from the guide rod.

[0010] Further, a pulley matching the periphery of the column is rotatably arranged inside the sliding sleeve assembly when the sliding sleeve assembly rotates. Axle seats are rotatably arranged on both sides of the pulley, and the axle seats are fixedly arranged inside the sliding sleeve assembly.

[0011] Further, the detection component is a transmissive photoelectric switch. The transmissive photoelectric switch has a transmitting end and a receiving end. A stop block is fixedly arranged at one end of the stop rod away from the guide rod. The transmitting end and the receiving end are respectively arranged on the side surfaces of the sliding sleeve assembly on both sides of the stop block.

[0012] Further, a diagonal brace is fixedly arranged between the end of the top beam and the end of the bottom beam.

[0013] Advantages of the present utility model:

[0014] (1) In the present utility model, when the electric hoist moves along the cross beam, the lifting hook moves outside the sliding rod through the sliding seat. When the electric hoist lifts or lowers the lifting hook, the lifting hook drives the sliding sleeve assembly to slide outside the column through the sliding rod, thereby improving the stability of the lifting hook. At the same time, it does not affect the lifting of the lifted object by the electric hoist, ensuring the safe and stable operation of the equipment;

[0015] (2) The buffer limit mechanism can limit the lifting hook when the lifting hook moves up and down, avoiding collision between the lifting hook and the electric hoist when the lifting hook rises, or the situation of disordered ropes when the motor fails to stop in time after the lifting hook descends in place;

[0016] (3) When the lifting hook drives the sliding and disengaging assembly to move up and down in place, the two guide rods contact the corresponding bottom beam and top beam. The bottom beam and the top beam contact the stop rod to trigger the detection component. After the detection component is triggered, it sends a signal to the controller to control the motor in the electric hoist to stop running, stopping the lifting hook from rising and falling continuously, and avoiding the situation of collision or disordered ropes of the lifting hook. Description of the drawings

[0017] Figure 1 is a structural schematic diagram of the present utility model.

[0018] Figure 2 is a structural schematic diagram of the buffer limit mechanism in the present utility model.

[0019] Figure 3This is a schematic structural diagram of the sliding sleeve assembly in the present utility model. Detailed implementation manners

[0020] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation to the present utility model and its application or use. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0021] The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different parts. Words such as "including" or "comprising" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] Such as Figure 1 And 2As shown in the figure, an electric hoist single-girder gantry crane includes a cross beam 1. At the bottom ends of both sides of the cross beam 1, there are columns 2. At the bottom ends of the columns 2, there is a bottom beam 6 fixedly arranged. On the cross beam 1, there is an electric hoist 3 slidably arranged. Below the electric hoist 3, there is a hook 31 suspended. At the top of the hook 31, there is a sliding seat 32 fixedly arranged. Inside the sliding seat 32, there is a sliding rod 7 arranged in parallel with the cross beam 1. At both ends of the sliding rod 7, there are sliding sleeve assemblies 4 slidably sleeved outside the columns 2. On the side of the sliding sleeve assembly 4, there is a buffer and limit mechanism 9. At the upper end of the column 2, there is a top beam 8 corresponding to the buffer and limit mechanism 9. The buffer and limit mechanism 9 has two guide rods 92 corresponding to the bottom beam 6 and the top beam 8 respectively. The guide rods 92 are slidably connected to one side of the sliding sleeve assembly 4. On the sliding sleeve assembly 4 between the two guide rods 92, there is a stop rod 98 slidably arranged horizontally in the middle. On the sliding sleeve assembly 4, there is a detection component 99 for detecting the movement of the stop rod 98. In this embodiment, when the electric hoist 3 moves along the cross beam 1, the hook 31 moves outside the sliding rod 7 through the sliding seat 32. When the electric hoist 3 hoists or lowers the hook 31, the hook 31 drives the sliding sleeve assembly 4 to slide outside the column 2 through the sliding rod 7, thereby improving the stability of the hook 31, and at the same time not affecting the hoisting of the hoisted object by the electric hoist 3, ensuring the safe and stable operation of the equipment. The buffer and limit mechanism 9 can play a role in limiting the hook 31 when the hook 31 moves up and down, avoiding collision between the hook 31 and the electric hoist 3 when the hook 31 rises, or the situation of disordered ropes when the motor does not stop in time after the hook 31 descends in place. When the hook 31 drives the sliding sleeve assembly 4 to move up and down in place, the two guide rods 92 contact the corresponding bottom beam 6 and top beam 8. The bottom beam 6 and the top beam 8 contact the stop rod 98 to trigger the detection component 99. After the detection component 99 is triggered, it sends a signal to the controller to control the motor in the electric hoist 3 to stop running, stopping the hook 31 from rising and falling continuously, and avoiding the situation of collision or disordered ropes of the hook 31.

[0023] In some embodiments, a buffer seat 91 is slidably sleeved outside the guide rod 92. The buffer seat 91 is fixedly arranged on one side of the sliding sleeve assembly 4. At one end of the guide rod 92 away from the stop rod 98, there is a support plate 93 fixedly arranged. Outside the guide rod 92 between the support plate 93 and the buffer seat 91, there is a spring 95 sleeved. When the hook 31 rises and falls in place, the guide rod 92 in the buffer and limit mechanism 9 contacts the top beam 8 and the bottom beam 6. The guide rod 92 slides inside the buffer seat 91, compressing the spring 95, playing a certain buffering role.

[0024] In some embodiments, a connecting rod 96 is hinged on one end of the guide rod 92 close to the baffle rod 98, and an end of the connecting rod 96 facing away from the guide rod 92 is hinged to the end of the baffle rod 98. A baffle rod support 97 is provided on the outer sliding sleeve of the baffle rod 98, and the baffle rod support 97 is fixedly arranged on the outer side of the sliding sleeve assembly 4; when the hook 31 rises and falls into place, the guide rod 92 in the buffer limit mechanism 9 contacts the top beam 8 and the bottom beam 6, pushing the guide rod 92 to slide inside the buffer seat 91, and when the guide rod 92 slides, the baffle rod 98 is driven to move through the connecting rod 96.

[0025] In some embodiments, a buffer head 94 is fixedly provided on one side of the support plate 93 away from the guide rod 92; the buffer head 94 is made of rubber material and has a certain buffering effect.

[0026] In some embodiments, Figure 3 As shown, when the interior of the sliding sleeve assembly 4 rotates, a pulley 41 matching the four sides of the column 2 is rotatably provided, and shaft seats 42 are rotatably provided on both sides of the pulley 41, and the shaft seats 42 are fixedly provided inside the sliding sleeve assembly 4; the interior of the sliding sleeve assembly 4 is slidably connected to the outer side of the column 2 through the pulley 41, thereby ensuring the stability of sliding between the sliding sleeve assembly 4 and the column 2.

[0027] In some embodiments, the detection component 99 is a through-beam photoelectric switch, which has a transmitting end and a receiving end. A block 981 is fixedly provided on the end of the blocking rod 98 that is away from the guide rod 92, and the transmitting end and the receiving end are respectively arranged on the side of the sliding sleeve assembly 4 on both sides of the block 981; when the hook 31 rises or falls but is not in place, the guide rod 92 in the buffer limit mechanism 9 does not contact the top beam 8 and the bottom beam 6. At this time, the light emitted from the transmitting end enters the interior of the receiving end. At this time, no signal is sent to the controller to control the motor in the electric hoist 3 to stop running, and the hook 31 can rise or fall; when the hook 31 rises or falls into place, the guide rod 92 in the buffer limit mechanism 9 contacts the top beam 8 and the bottom beam 6. At this time, the light emitted from the transmitting end is blocked by the block 981 and cannot enter the interior of the receiving end. The detection component 99 is triggered and sends a signal to the controller to control the motor in the electric hoist 3 to stop running.

[0028] In some embodiments, a diagonal brace 5 is fixedly disposed between the end of the top beam 8 and the end of the bottom beam 6 ; the diagonal brace 5 can improve the stability of the column 2 .

[0029] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0030] The above-described embodiments only represent some embodiments of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An electric hoist single-beam gantry crane, characterized in that: The lifting of the ...

2. The electric hoist single-beam gantry crane according to claim 1, characterized in that: The outer sliding sleeve of the guide rod is provided with a buffer seat, and the buffer seat is fixedly arranged on one side of the sliding sleeve assembly. A support plate is fixedly arranged on the end of the guide rod away from the blocking rod, and a spring is sleeved on the outer side of the guide rod between the support plate and the buffer seat.

3. The electric hoist single-beam gantry crane according to claim 2, characterized in that: A connecting rod is hinged on one end of the guide rod close to the baffle rod, and an end of the connecting rod away from the guide rod is hinged to the end of the baffle rod. The outer sliding sleeve of the baffle rod is provided with a baffle rod support, and the baffle rod support is fixedly arranged on the outer side of the sliding sleeve assembly.

4. The electric hoist single-beam gantry crane according to claim 2, characterized in that: A buffer head is fixedly arranged on one side of the support plate away from the guide rod.

5. The electric hoist single-beam gantry crane according to claim 1, characterized in that: When the interior of the sliding sleeve assembly rotates, a pulley matching the periphery of the column is rotatably arranged, and shaft seats are rotatably arranged on both sides of the pulley, and the shaft seats are fixedly arranged inside the sliding sleeve assembly.

6. The electric hoist single-beam gantry crane according to claim 1, characterized in that: The detection component is a beam-type photoelectric switch having a transmitting end and a receiving end. A stopper is fixedly provided on the end of the stopper rod away from the guide rod. The transmitting end and the receiving end are respectively arranged on the side surfaces of the sliding sleeve assembly on both sides of the stopper.

7. The electric hoist single-beam gantry crane according to claim 1, characterized in that: An oblique support rod is fixedly arranged between the end of the top beam and the end of the bottom beam.

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