A safe and efficient guide cross rod device for replacing a trolley group

Abstract

This invention belongs to the field of crane maintenance technology and relates to a safe and efficient device for replacing the guide crossbar of a trolley assembly. It includes a trolley assembly, a connecting component, a guide crossbar mechanism, and a sliding mechanism. A connecting component is installed on one side of the trolley assembly, and the guide crossbar mechanism is mounted on the connecting component. The guide crossbar mechanism can drive the trolley assembly to move horizontally. The sliding mechanism is connected to the guide crossbar mechanism. When the trolley assembly moves along the track, it drives the guide crossbar mechanism and the sliding mechanism to operate synchronously. Two uprights are installed at the bottom of the sliding mechanism, and the bottom of the uprights is fixedly installed on the crane beam platform. A support mechanism is also installed on the crane beam platform, and the support mechanism is connected to the uprights. By sliding the sliding sleeve on the crossbar, the horizontal position of the trolley can be adjusted at any time during the movement of the trolley assembly, and the balance can be adjusted in real time to prevent tipping. This improves the safety factor of trolley replacement, reduces the labor intensity of workers, and reduces the welding time of the lifting points and the replacement time of the chain hoist.

Description

Technical Field

[0001] This invention belongs to the field of crane maintenance technology, specifically relating to a safe and efficient device for replacing the guide crossbar of a trolley assembly. Background Technology

[0002] The traveling mechanism of casting cranes adopts a four-corner drive structure, with active trolley units under a double-drive wheel balance boom and passive trolley units under a double-drive wheel balance boom being common configurations. When trolley unit wheel flange wear exceeds the standard or bearings reach the end of their service life, it is necessary to replace the entire trolley unit during maintenance.

[0003] The trolley assembly is heavy during replacement, and it cannot maintain balance during the removal process, relying entirely on manual support, resulting in low maintenance efficiency. In addition, the entry and exit of the trolley assembly is not safe and fast, the welding time of the lifting points and the switching time of the chain hoist are long, and the safety of the replacement process is poor, which cannot meet the needs of users.

[0004] Utility model patent CN205740053U discloses a quick-change trolley assembly balancing device, comprising two fixedly connected front and rear balancing frames. Each balancing frame includes a base plate, adjusting screws, adjusting nuts, a bracket, and guide wheels. Adjusting screws are symmetrically arranged on the base plate, and their relative position to the base plate is adjusted by adjusting nuts located above and below the base plate. The lower end of the adjusting screw is fixedly connected to the bracket, which contains guide wheels. A connecting plate is fixedly connected between the base plates of the front and rear balancing frames. This patented solution effectively supports the wheel frame, allowing the trolley assembly to move smoothly from under the crane end beam. However, during use, the device needs to be fixed to the crane wheel assembly balancing frame using electric welding to prevent it from falling off. Finally, a truck crane is required to lift the wheel assembly and remove the device. This balancing device is cumbersome, time-consuming, labor-intensive, and not safe enough. Summary of the Invention

[0005] The purpose of this invention is to provide a safe and efficient device for replacing the guide crossbar of a trolley assembly. The replacement process is safe and fast, and real-time adjustment is achieved during the movement of the trolley assembly to prevent the trolley from tipping over.

[0006] The technical solution adopted by this invention to solve its technical problem is: a safe and efficient guide bar replacement device for a trolley assembly, comprising a trolley assembly, a connecting member, a guide bar mechanism, and a sliding mechanism. A connecting member is installed on one side of the trolley assembly, and a guide bar mechanism is installed on the connecting member. The guide bar mechanism can drive the trolley assembly to move horizontally. A sliding mechanism is connected to the guide bar mechanism. When the trolley assembly moves along the track, it drives the guide bar mechanism and the sliding mechanism to run synchronously. Two uprights are installed at the bottom of the sliding mechanism. The bottom of the uprights is fixedly installed on the crane beam platform. A support mechanism is also installed on the crane beam platform, and the support mechanism is connected to the uprights.

[0007] Furthermore, the connecting member and the guide crossbar mechanism are provided in two sets. Each set of guide crossbar mechanism includes a fastener, which is fastened to the corresponding connecting member. A lead screw is fixedly installed at the end of the fastener away from the connecting member. A connecting sleeve nut is threaded on the lead screw. Multiple connecting posts are fixedly installed on the connecting sleeve nut. A sleeve is fixedly installed at the end of the connecting posts away from the connecting sleeve nut. A sliding mechanism is connected to the sleeve.

[0008] Furthermore, the sliding mechanism includes a connecting rod, a sliding sleeve, and a crossbar. The crossbar is parallel to the running direction of the trolley assembly and is fixedly installed on the top of the two uprights. One end of the connecting rod is fixedly connected to the outer wall of the sliding sleeve. The sliding sleeve is fitted onto the crossbar between the two uprights and can slide along the crossbar. The other end of the connecting rod is fitted into the sleeve of the guide crossbar mechanism.

[0009] Furthermore, in one embodiment of the present invention, the connecting rod is a smooth round tube, the sleeve can rotate on the connecting rod, and a fixing member is connected to the end of the connecting rod away from the crossbar, the fixing member being used to limit the sleeve.

[0010] Furthermore, in another embodiment of the present invention, the connecting rod is a threaded rod with external threads, and the sleeve of the guide crossbar mechanism has internal threads that match the connecting rod, and the sleeve can rotate on the connecting rod.

[0011] Furthermore, the support mechanism includes a mounting plate, which is fixedly mounted on the crane beam walkway. A groove is provided on the top surface of the mounting plate, and a limit block is installed in the groove. A rotating component is installed in the groove between the limit block and the upright, and a support rod is installed on the rotating component. The end of the support rod away from the rotating component is connected to the upper part of the side wall of the upright.

[0012] Furthermore, a ball joint is fixedly installed at the end of the support rod away from the rotating part, and the ball joint is fixedly installed on the upright, with a matching ball head inside the ball joint.

[0013] Furthermore, bolts are provided at both ends of the limiting block, and threaded holes matching the bolts are provided on the top surface of the mounting plate. The limiting block is fixed in the threaded holes on the mounting plate by bolts, and the limiting block is used to limit and support the support rod.

[0014] The present invention has the following beneficial effects: By setting up a guide crossbar mechanism, a sliding mechanism, and a support mechanism, the present invention improves the safety factor of the trolley changing machine, reduces the labor intensity of employees, makes the entry and exit of the trolley assembly safe and fast, reduces the welding time of the lifting points and the switching time of the chain hoist, and ensures the safety of the changing process, avoiding the trolley tipping over. By sliding the sleeve on the crossbar, the horizontal position of the trolley can be adjusted at any time during the movement of the trolley assembly, and the balance can be adjusted in real time to prevent tipping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the guide bar device in Embodiment 1 of the present invention.

[0016] Figure 2 This is a schematic diagram of the guide bar mechanism in Embodiment 1 of the present invention.

[0017] Figure 3 This is a schematic diagram of the sliding mechanism structure in Embodiment 1 of the present invention.

[0018] Figure 4 This is a schematic diagram of the support mechanism structure in Embodiment 1 of the present invention.

[0019] Figure 5 This is a schematic diagram of the sliding mechanism structure in Embodiment 2 of the present invention.

[0020] In the diagram: 1. Trolley assembly; 2. Connecting component; 3. Guide crossbar mechanism; 301. Fastener; 302. Screw rod; 303. Connecting sleeve nut; 304. Connecting column; 305. Fixing component; 306. Sleeve; 4. Sliding mechanism; 401. Connecting rod; 402. Sliding sleeve; 403. Crossbar; 5. Upright; 6. Crane beam walkway; 7. Support mechanism; 701. Mounting plate; 702. Slide groove; 703. Limiting block; 704. Rotating component; 705. Support rod; 706. Ball head; 707. Ball head seat. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention. However, the scope of protection of the present invention is not limited to these embodiments. All changes or equivalent substitutions that do not depart from the concept of the present invention are included within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1As shown, a safe and efficient guide bar replacement device for a trolley assembly includes a trolley assembly 1, a connector 2, a guide bar mechanism 3, and a crane beam platform 6. The connector 2 is installed on one side of the trolley assembly 1, and the guide bar mechanism 3 is installed on the connector 2. A sliding mechanism 4 is connected to the guide bar mechanism 3. The sliding mechanism 4 and the guide bar mechanism 3 can move horizontally with the trolley assembly 1 synchronously. Two uprights 5 are installed at the bottom of the sliding mechanism 4. The bottom of the uprights 5 is fixedly installed on the crane beam platform 6. A support mechanism 7 is also installed on the crane beam platform 6, and the support mechanism 7 is connected to the uprights 5.

[0024] like Figure 2 As shown, there are two sets of connector 2 and guide bar mechanism 3. Each set of guide bar mechanism 3 includes fastener 301, which is fastened to the corresponding connector 2. A screw rod 302 is fixedly installed at the end of fastener 301 away from connector 2. A connecting sleeve 303 is threaded on the screw rod 302. Multiple connecting posts 304 are fixedly installed on the connecting sleeve 303. A sleeve 306 is fixedly installed at the end of the connecting posts 304 away from the connecting sleeve 303. The sliding mechanism 4 is connected to the sleeve 306.

[0025] like Figure 2 , 3 As shown, the sliding mechanism 4 includes a connecting rod 401, a sliding sleeve 402, and a crossbar 403. The crossbar 403 is parallel to the running direction of the trolley group 1 and is fixedly installed on the top of the two uprights 5. The connecting rod 401 is a smooth round tube. One end of the connecting rod 401 is fixedly connected to the outer wall of the sliding sleeve 402. The sliding sleeve 402 is sleeved on the crossbar 403 between the two uprights 5 and can slide along the crossbar 403. The other end of the connecting rod 401 is sleeved in the sleeve 306 of the guide crossbar mechanism 3 and can rotate on the connecting rod 401. The end of the connecting rod 401 away from the crossbar 403 is connected to a fixing member 305. The fixing member 305 is used to limit the sleeve 306, so that the entry and exit of the trolley group can be safe and fast, reducing the welding time of the lifting points and the adjustment time of the chain hoist.

[0026] like Figure 4As shown, the support mechanism 7 includes a mounting plate 701, which is fixedly mounted on the crane beam walkway 6. A groove 702 is formed on the top surface of the mounting plate 701, and a limiting block 703 is installed within the groove 702. A rotating component 704 is installed within the groove 702 between the limiting block 703 and the upright 5. A support rod 705 is mounted on the rotating component 704, and the end of the support rod 705 away from the rotating component 704 is connected to the upper part of the side wall of the upright 5. A ball joint seat 707 is fixedly mounted on the end of the support rod 705 away from the rotating component 704, and the ball joint seat 707 is fixedly mounted on the upright 5. A matching ball head 706 is provided within the ball joint seat 707. Bolts are provided at both ends of the limiting block 703, and threaded holes matching the bolts are provided on the top surface of the mounting plate 701. The limiting block 703 is fixed to the threaded holes on the mounting plate 701 by bolts, improving the support strength and the safety factor of the trolley change.

[0027] One end of the support rod 705 is connected to the upright 5, and the other end is fixed in the groove 702 of the mounting plate 701 by the limiting block 703. When the trolley group 1 is pulled, the support mechanism 7 provides support and reinforcement for the crossbar 403 and the upright 5. In order to improve the support stability of the whole device, the support mechanism 7 and the guide crossbar mechanism 3 are set on the same side of the upright 5.

[0028] Manually rotate the connecting column 304 of the guide crossbar mechanism 3 using a wrench or pry bar. The connecting sleeves 303 and 306 at both ends of the connecting column 304 rotate on the lead screw 302 and connecting rod 401, respectively. This allows the lead screw 302 to drive the trolley assembly 1 to move along the direction of the lead screw 302, thus enabling the trolley assembly 1 to be adjusted to a left or right position perpendicular to the forward direction, preventing the trolley from tipping over. When it is necessary to replace the trolley assembly, fasten the fastener 301 of the guide crossbar mechanism 3 onto the connecting piece 2 on the side of the trolley assembly 1, and then rotate the connecting column 304. As the trolley assembly moves outward along the track, the sliding sleeve 402 slides on the crossbar 403 as the trolley moves, allowing the trolley's horizontal position to be adjusted at any time during the movement of the trolley assembly, and real-time balance adjustment to prevent tipping.

[0029] Example 2

[0030] like Figure 5 As shown, the structure of the guide bar device in Embodiment 2 is basically the same as that in Embodiment 1. The difference is that the connecting rod 401 of the sliding mechanism 4 is a threaded rod with an external thread. The sleeve 306 of the guide bar mechanism 3 has an internal thread that matches the connecting rod 401. The connecting sleeve 303 rotates on the lead screw 302, and the sleeve 306 rotates on the connecting rod 401 at the same time, thereby realizing that the lead screw 302 drives the trolley group 1 to move along the direction of the lead screw 302.

[0031] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0032] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A device for safely and efficiently replacing the guide crossbar of a trolley set, characterized in that, The system includes a trolley assembly, a connector, a guide bar mechanism, and a sliding mechanism. A connector is installed on one side of the trolley assembly, and a guide bar mechanism is installed on the connector. The guide bar mechanism can drive the trolley assembly to move horizontally. A sliding mechanism is connected to the guide bar mechanism. When the trolley assembly moves along the track, it drives the guide bar mechanism and the sliding mechanism to run synchronously. Two uprights are installed at the bottom of the sliding mechanism. The bottom of the uprights is fixedly installed on the crane beam platform. A support mechanism is also installed on the crane beam platform, and the support mechanism is connected to the uprights. The connecting piece and the guide crossbar mechanism are provided in two sets. Each set of guide crossbar mechanism includes a fastener. The fastener is fastened to the corresponding connecting piece. A screw rod is fixedly installed at the end of the fastener away from the connecting piece. A connecting sleeve nut is threaded on the screw rod. Multiple connecting posts are fixedly installed on the connecting sleeve nut. A sleeve is fixedly installed at the end of the connecting posts away from the connecting sleeve nut. A sliding mechanism is connected to the sleeve. The sliding mechanism includes a connecting rod, a sliding sleeve, and a crossbar. The crossbar is parallel to the running direction of the trolley group and is fixedly installed on the top of the two uprights. One end of the connecting rod is fixedly connected to the outer wall of the sliding sleeve. The sliding sleeve is fitted onto the crossbar between the two uprights and can slide along the crossbar. The other end of the connecting rod is fitted into the sleeve of the guide crossbar mechanism. The connecting rod is a threaded rod with external threads, and the sleeve of the guide crossbar mechanism has internal threads that match the connecting rod, and the sleeve can rotate on the connecting rod. The support mechanism includes a mounting plate, which is fixedly installed on the crane beam walkway. A groove is provided on the top surface of the mounting plate, and a limit block is installed in the groove. A rotating component is installed in the groove between the limit block and the upright. A support rod is installed on the rotating component, and the end of the support rod away from the rotating component is connected to the upper part of the side wall of the upright.

2. The guide crossbar arrangement for safely and efficiently exchanging a set of dollies, according to claim 1, wherein, The connecting rod is a smooth round tube, and the sleeve can rotate on the connecting rod. A fixing component is connected to the end of the connecting rod away from the crossbar, and the fixing component is used to limit the position of the sleeve.

3. The guide crossbar arrangement for safely and efficiently exchanging a set of dollies as defined in claim 1, wherein, A ball joint is fixedly installed at the end of the support rod away from the rotating part. The ball joint is fixedly installed on the upright and has a matching ball head inside.

4. The guide crossbar arrangement for safely and efficiently exchanging a set of dollies according to claim 1, wherein, The limiting block is provided with bolts at both ends, and the top surface of the mounting plate is provided with threaded holes that match the bolts. The limiting block is fixed to the threaded holes on the mounting plate by bolts.

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