Movable gantry crane device

Abstract

The utility model belongs to the technical field of hoisting equipment, and particularly relates to a movable gantry crane device which comprises gantry frame bodies, a limiting frame is movably installed between the gantry frame bodies, and the movable gantry crane device comprises an anti-shaking mechanism, a synchronizing mechanism and an adjusting mechanism. According to the movable gantry crane device, through the design of the anti-shaking mechanism, the swinging range of a hung heavy object in the hoisting process can be effectively limited, the stagnation damper buffers and absorbs shock when the heavy object shakes, shakes energy is consumed, the shaking amplitude is reduced, hoisting stability is guaranteed, the situation that the heavy object shakes too much to impact surrounding objects is avoided, and safety accidents are reduced; due to the design of the first rollers at the two ends of the limiting frame in the synchronizing mechanism, when the gantry crane runs, rolling friction between the first rollers and the portal frame body replaces sliding friction and threaded lifting, friction force is reduced, the synchronizing rate is guaranteed, the limiting frame and heavy object lifting are synchronous, part abrasion can be reduced, the service life of equipment is prolonged, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting equipment technical field, concretely is a mobile gantry crane device. BACKGROUND

[0002] The gantry crane is a common hoisting equipment and is widely used in factories, warehouses, wharfs and other places. In some occasions where frequent movement of operating position is required, the traditional fixed gantry crane cannot meet the demand of flexible operation. Although some existing mobile gantry cranes solve the mobility problem to some extent, there are still some deficiencies, for example, the mobile gantry crane has poor stability during movement and is prone to shaking, which affects the safety of hoisting. This not only causes instability of heavy object hoisting process and makes it difficult to place accurately, but also has the risk of heavy object impacting surrounding objects due to excessive shaking amplitude, which easily causes safety accidents and poses a serious threat to personnel safety and equipment facilities.

[0003] According to the mobile gantry crane device (authorized publication number: CN218665040U) described in the patent network, "the utility model provides a mobile gantry crane device, including guide rail and gantry, two electric gourds are arranged on the upper end of the gantry, the output end of the electric gourd is connected with the lifting rope, the movable frame is arranged in the gantry and surrounds the outside of the lifting rope, the movable frame is connected with the lifting structure arranged on both sides of the gantry through the two ends, the movable frame includes a frame body, a first clamping plate and a second clamping plate are arranged in the frame body and connected with the clamping driving element arranged on the frame body through the two clamping plates arranged on both sides of the lifting rope; the utility model is different from the traditional gantry crane device, that is, an movable frame is arranged in the gantry, the movable frame is controlled to move to the hoisting position of the lifting rope and the object through the lifting structure, the two clamping plates in the movable frame can be closed under the pushing of the clamping driving element, the lifting rope is fixed, so that when the gantry hoists and carries the object, the hoisted object connected with the bottom end of the lifting rope will not shake greatly, and the stability is high."

[0004] For the above related technology, the inventor believes that although the design of double clamping plates is used to fix the end of the steel cable, it will cause damage to the steel cable during long-term use. In addition, when hoisting heavy objects, shaking not only occurs in the front and back directions, but also in the left and right directions. The above technology still has the risk of left and right shaking, and the use of screw rod to control the lifting of the movable frame in the above technology has problems in synchronization, so it is urgent to improve a mobile gantry crane device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a mobile gantry crane device to solve the problems raised in the background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: A mobile gantry crane device, including gantry main part, the bottom fixed mounting of gantry main part has the bottom plate, the fixed mounting of reinforcing rib between gantry main part and bottom plate, the bottom fixed mounting of bottom plate has universal wheel, the movable installation of electric hoist is positioned in the middle of gantry main part, the steel wire rope is located in electric hoist, the movable installation of limit frame between gantry main part.

[0007] Preferably, the sliding block one is movably installed in the limiting groove, the locking hole is arranged on the sliding block one, the locking nut is movably installed in the locking hole through the thread, and the locking nut passes through the sliding groove one.

[0008] Preferably, the limiting block is fixedly installed on the side of the sliding block one, the limiting block is movably installed in the sliding groove one, and the condensation damper is fixedly installed in front of the sliding block one.

[0009] Preferably, the condensation damper is provided with the buffer cavity, the piston disc is movably installed in the buffer cavity, the spring is fixedly installed in the buffer cavity, the piston disc is fixedly installed on the piston rod, and the end of the piston rod is fixedly installed on the hook head.

[0010] Preferably, the synchronous mechanism comprises the gantry main body and the limiting frame, the two ends of the limiting frame are provided with the clamping grooves, the fixed shafts are fixedly installed in the clamping grooves, and the roller one is movably installed on the fixed shaft.

[0011] Preferably, the gantry main body is provided with the sliding groove two, the limiting frame is movably installed in the sliding groove two, the roller one is tightly attached to the side wall of the gantry main body, and the length of the roller one is greater than the length of the limiting frame.

[0012] Preferably, the adjusting mechanism comprises the gantry main body, the sliding groove three is arranged in the gantry main body, the sliding block two is movably installed in the sliding groove three, the sliding block two is fixedly installed on the electric hoist, the motor is fixedly installed on the side of the gantry main body, the output shaft of the motor is fixedly installed on the screw rod, the screw rod is a bidirectional screw rod, and the sliding block two is movably installed on the screw rod through the thread.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The mobile gantry crane device effectively limits the swing range of the hook head through the design of the anti-sway mechanism, and the condensation damper plays a buffering and damping role when the heavy object is swinging, consumes the swing energy, reduces the swing amplitude, and ensures the stability of the hoisting process. When the gantry crane hoists heavy objects, it can avoid the impact of heavy objects on surrounding objects due to excessive swing amplitude, and reduce the occurrence of safety accidents.

[0015] 2. The mobile gantry crane device, through the design of the synchronous mechanism, the design of the roller one at both ends of the limiting frame, during the operation of the gantry crane, the rolling friction between the roller one and the gantry frame body is replaced by sliding friction and threaded lifting, effectively reducing the friction between the limiting frame and the gantry frame body, ensuring the synchronization rate, so that the limiting frame and the heavy object are synchronized when lifting and lowering the heavy object, while reducing the wear and tear between the components, prolonging the service life of the equipment and reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a three-dimensional schematic view of the utility model;

[0017] Figure 2 is a schematic view of the anti-sway mechanism installation structure of the utility model;

[0018] Figure 3 is a half-cut schematic view of the anti-sway mechanism of the utility model;

[0019] Figure 4 is a schematic view of the synchronous mechanism structure of the utility model;

[0020] Figure 5 is a schematic view of the adjusting mechanism installation structure of the utility model.

[0021] In the figure: 1 gantry frame body, 2 reinforcing rib, 3 bottom plate, 4 electric hoist, 5 steel wire rope, 6 limiting frame, 7 universal wheel, 201 limiting groove, 202 hook head, 203 sliding groove one, 204 locking nut, 205 sliding block one, 206 condensation damper, 207 clamping groove, 208 roller one, 209 fixed shaft, 210 locking hole, 211 limiting block, 212 buffer cavity, 213 spring, 214 piston disc, 215 piston rod, 216 roller two, 217 sliding groove two, 301 sliding groove three, 302 motor, 303 screw, 304 sliding block two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Example 1:

[0024] Due to the inherent instability of existing mobile gantry cranes during movement, they are prone to swaying, affecting lifting safety. This not only leads to instability during heavy load lifting and makes precise placement difficult, but also poses a risk of heavy loads colliding with surrounding objects due to excessive swaying, easily causing safety accidents and seriously threatening personnel safety and equipment. Therefore, this device is equipped with an anti-sway mechanism. Please refer to [link / reference]. Figures 1-4 This utility model provides a technical solution: a mobile gantry crane device, including a gantry frame body 1, a base plate 3 fixedly installed at the bottom of the gantry frame body 1, a reinforcing rib 2 fixedly installed between the gantry frame body 1 and the base plate 3, a caster wheel 7 fixedly installed at the bottom of the base plate 3, an electric hoist 4 movably installed at the middle position of the gantry frame body 1, a wire rope 5 provided inside the electric hoist 4, and a limit frame 6 movably installed between the gantry frame bodies 1; the mobile gantry crane device includes an anti-sway mechanism, a synchronization mechanism, and an adjustment mechanism, the anti-sway mechanism includes a limit frame 6, a limit groove 201 provided inside the limit frame 6, a hook head 202 movably installed in the limit groove 201, and a sliding groove 203 provided on the side of the limit frame 6.

[0025] A slider 205 is movably installed in the limiting groove 201. The slider 205 is provided with a locking hole 210. A locking nut 204 is movably installed in the locking hole 210 by means of a thread. The locking nut 204 passes through the sliding groove 203.

[0026] A limit block 211 is fixedly installed on the side of slider 205. The limit block 211 is movably installed in slide groove 203. A stagnation damper 206 is fixedly installed in front of slider 205.

[0027] The stagnation damper 206 has a buffer chamber 212, a piston disc 214 is movably installed in the buffer chamber 212, a spring 213 is fixedly installed in the buffer chamber 212, the piston disc 214 is fixedly installed on the piston rod 215, and the end of the piston rod 215 is fixedly installed on the hook head 202.

[0028] Adjust the position of the hook head 202 according to the load to be lifted, loosen the locking nut 204, and adjust the position of the slider 205 and the hook head 202. When the position is adjusted to a suitable position, tighten the locking nut 204 to fix the slider 205 and transfer the load. When the load is shaken by external factors during the lifting process, the stagnation damper 206 and the limit frame 6 stabilize the load to prevent excessive shaking and collision with surrounding objects, thereby reducing the occurrence of safety accidents.

[0029] Example 2:

[0030] Based on Embodiment 1, when the anti-sway mechanism limits the movement of a heavy object, there is a problem of synchronization. Therefore, this device is equipped with a synchronization mechanism. Please refer to [link / reference]. Figures 1-5 This utility model provides a technical solution: a mobile gantry crane device, the synchronization mechanism of which includes a gantry frame body 1 and a limiting frame 6. The limiting frame 6 has slots 207 at both ends, a fixed shaft 209 is fixedly installed in the slots 207, and a roller 208 is movably installed on the fixed shaft 209.

[0031] The main body 1 of the gantry frame is provided with a second slide groove 217. The limit frame 6 is movably installed in the second slide groove 217. The first roller 208 is close to the side wall of the main body 1 of the gantry frame. The length of the first roller 208 is longer than the length of the limit frame 6.

[0032] The adjustment mechanism includes a gantry frame body 1, a slide groove 301 inside the gantry frame body 1, a slider 304 movably installed in the slide groove 301, the slider 304 fixedly installed on the electric hoist 4, a motor 302 fixedly installed on the side of the gantry frame body 1, the output shaft of the motor 302 fixedly installed on the screw 303, the screw 303 is a double screw, and the slider 304 is movably installed on the screw 303 by thread.

[0033] When the load is hoisted to the appropriate position, the electric hoist 4 is started to lower the load. Under the action of the roller 208, the synchronization effect between the limit frame 6 and the load is ensured, the hoisting efficiency is improved, the wear between parts is reduced, the service life of the equipment is extended, and the maintenance cost is reduced.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A mobile gantry crane device, comprising a gantry frame body (1), characterized in that: A base plate (3) is fixedly installed at the bottom of the gantry frame body (1), and a reinforcing rib (2) is fixedly installed between the gantry frame body (1) and the base plate (3). A caster wheel (7) is fixedly installed at the bottom of the base plate (3). An electric hoist (4) is movably installed in the middle of the gantry frame body (1). A wire rope (5) is provided inside the electric hoist (4). A limit frame (6) is movably installed between the gantry frame bodies (1). The mobile gantry crane device includes an anti-sway mechanism, a synchronization mechanism, and an adjustment mechanism. The anti-sway mechanism includes a limiting frame (6), a limiting groove (201) is provided in the limiting frame (6), a hook head (202) is movably installed in the limiting groove (201), and a sliding groove (203) is provided on the side of the limiting frame (6).

2. The mobile gantry crane device according to claim 1, characterized in that: A slider (205) is movably installed in the limiting groove (201). The slider (205) is provided with a locking hole (210). A locking nut (204) is movably installed in the locking hole (210) by means of a thread. The locking nut (204) passes through the sliding groove (203).

3. A mobile gantry crane device according to claim 2, characterized in that: A limiting block (211) is fixedly installed on the side of the slider (205), and the limiting block (211) is movably installed in the slide groove (203). A stagnation damper (206) is fixedly installed in front of the slider (205).

4. A mobile gantry crane device according to claim 3, characterized in that: The stagnation damper (206) is provided with a buffer chamber (212), a piston disc (214) is movably installed in the buffer chamber (212), a spring (213) is fixedly installed in the buffer chamber (212), the piston disc (214) is fixedly installed on the piston rod (215), and the end of the piston rod (215) is fixedly installed on the hook head (202).

5. A mobile gantry crane device according to claim 4, characterized in that: The synchronization mechanism includes a gantry frame body (1) and a limiting frame (6). The limiting frame (6) has slots (207) at both ends. A fixed shaft (209) is fixedly installed in the slot (207), and a roller (208) is movably installed on the fixed shaft (209).

6. A mobile gantry crane device according to claim 5, characterized in that: The main body (1) of the gantry frame is provided with a second sliding groove (217), and the limiting frame (6) is movably installed in the second sliding groove (217). The first roller (208) is close to the side wall of the main body (1) of the gantry frame, and the length of the first roller (208) is greater than the length of the limiting frame (6).

7. A mobile gantry crane device according to claim 6, characterized in that: The adjustment mechanism includes a gantry frame body (1), a slide groove three (301) is provided in the gantry frame body (1), a slider two (304) is movably installed in the slide groove three (301), the slider two (304) is fixedly installed on the electric hoist (4), a motor (302) is fixedly installed on the side of the gantry frame body (1), the output shaft of the motor (302) is fixedly installed on the screw (303), the screw (303) is a bidirectional screw, and the slider two (304) is movably installed on the screw (303) by thread.

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