Gantry crane for descending bridge girder erection machine

Abstract

The utility model discloses a gantry crane for a descending type bridge girder erection machine, and relates to the technical field of cranes, in particular to the gantry crane for the descending type bridge girder erection machine, which comprises a main beam, an electric hoist and a matching plate, both ends of the main beam are provided with end beams, and the main beam is internally provided with a crane carriage. According to the gantry crane for the descending type bridge girder erection machine, through the arrangement of a cavity block, a limiting spring, a limiting baffle, a T-shaped sliding block, a pushing block, a clamping block, a bolt and a T-shaped positioning block, the gantry crane for the descending type bridge girder erection machine has the effect that an electric hoist is convenient to disassemble and overhaul, and the electric hoist is convenient to position through the T-shaped positioning block; through cooperation of the bolt and the clamping block, installation of the electric hoist is facilitated, through the limiting baffle, the position of the bolt is conveniently limited, loosening and falling of the bolt are avoided, installation of the electric hoist is facilitated, on the contrary, dismounting and overhauling of the electric hoist are facilitated, and the purpose of improving practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a gantry crane used for a downward-type bridge erecting machine. Background Art

[0002] Gantry cranes are a variation of bridge cranes. In ports, they are primarily used for loading and unloading outdoor cargo yards, material yards, and bulk cargo. Their metal structure resembles a portal frame, with two legs mounted beneath the main beam, allowing them to travel directly on ground tracks. Gantry cranes are widely used in port cargo yards due to their high site utilization, large operating range, wide adaptability, and strong versatility.

[0003] The gantry crane used for the downward bridge-building machine in the prior art is not convenient for disassembly and maintenance of the electric hoist, and has poor practicality. In addition, when the lifting trolley of the existing downward bridge-building machine moves to the end of the main beam, it is easy to have a rigid collision with the end beam, which can easily cause damage to the lifting trolley and has poor buffering effect. A gantry crane for the downward bridge-building machine is now invented to solve the above problems. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a gantry crane for a downward-type bridge erecting machine, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a gantry crane for a downward bridge erection machine, comprising a main beam, an electric hoist and a matching plate, end beams are installed at both ends of the main beam, a lifting trolley is arranged inside the main beam, a fixed plate is installed at the bottom of the lifting trolley, cavity blocks are installed on both sides of the fixed plate, a limit spring is installed inside the cavity block, a limit baffle is installed at one end of the limit spring, a T-shaped slider is installed on one side of the limit baffle, a push block is installed on the other side of the limit baffle, a clamping block is installed on one side of the matching plate, and the matching plate is provided with a plurality of lifting trolleys. Threaded holes are provided inside the plywood and the fixed plate, bolts are provided inside the threaded holes, a T-shaped positioning block is installed on the top of the electric hoist, strip plates are installed on both sides of the lifting trolley, a guide cylinder and a damper are installed on one side of the strip plates, a buffer spring is installed inside the guide cylinder, a guide rod is installed at one end of the buffer spring, a buffer plate is installed at the end of the guide rod away from the buffer spring, one side of the buffer plate is connected to a support rod through a shaft, the end of the support rod away from the buffer plate is connected to a cross slider through a shaft, and a shock-absorbing spring is installed at one end of the cross slider.

[0008] Optionally, a T-shaped groove is provided inside the cavity block with the left and right directions as the depth direction and the up and down directions as the length direction. The end of the T-shaped slider is located inside the T-shaped groove, and the T-shaped slider can slide along the length direction of the T-shaped groove.

[0009] Optionally, a side surface of the limiting baffle close to the T-shaped slider abuts against the bolt, and the matching plate abuts against the fixing plate.

[0010] Optionally, a slot with the left-right direction as the depth direction is formed on one side of the T-shaped positioning block, and an end of the blocking block away from the matching plate is inserted into the slot.

[0011] Optionally, a T-shaped positioning groove with the front-to-back direction as the depth direction is opened on the front of the fixing plate, and the end of the T-shaped positioning block is inserted into the interior of the T-shaped positioning groove.

[0012] Optionally, one end of the damper away from the strip plate is connected to the buffer plate, and one end of the guide rod away from the buffer plate is located inside the guide cylinder.

[0013] Optionally, the position of the buffer plate corresponds to the position of the end beam, and the lifting trolley and the electric hoist are electrically connected to the external power supply through wires.

[0014] Optionally, a cross slide groove is provided on one side of the strip plate with the left and right directions as the depth direction and the front and back directions as the length direction. The cross slider is located inside the cross slide groove. The cross slider can slide along the length direction of the cross slide groove, and one end of the shock-absorbing spring is installed inside the cross slide groove.

[0015] The utility model provides a gantry crane for a downward-type bridge erection machine, which has the following beneficial effects:

[0016] 1. The gantry crane for the downward bridge-building machine has the effect of facilitating the disassembly and maintenance of the electric hoist through the arrangement of the cavity block, the limit spring, the limit baffle, the T-shaped slider, the push block, the clamping block, the bolt and the T-shaped positioning block. The positioning of the electric hoist is facilitated by the T-shaped positioning block, the installation of the electric hoist is facilitated by the cooperation of the bolt and the clamping block, the position of the bolt is conveniently restricted by the limit baffle to prevent the bolt from loosening and falling, and the installation of the electric hoist is convenient. Conversely, the disassembly and maintenance of the electric hoist is convenient, thereby achieving the purpose of improving practicality.

[0017] 2. The gantry crane for the downward bridge-building machine has the ability to improve the buffering and shock-absorbing effect of the lifting trolley through the arrangement of the strip plate, guide cylinder, damper, buffer spring, guide rod, buffer plate, support rod, cross slide block and shock-absorbing spring. The cooperation of the damper, buffer spring and shock-absorbing spring avoids rigid collision between the lifting trolley and the end beam, improves the buffering and shock-absorbing effect, improves the protection of the lifting trolley, and achieves the purpose of improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the front cross-section of the present invention;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlarged in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the utility model when viewed from above;

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the structure enlarged at point B.

[0023] In the figure: 1. Main beam; 2. Electric hoist; 3. Matching plate; 4. End beam; 5. Lifting trolley; 6. Fixed plate; 7. Cavity block; 8. Limit spring; 9. Limit baffle; 10. T-type slider; 11. Push block; 12. Clamping block; 13. Bolt; 14. T-type positioning block; 15. Strip plate; 16. Guide cylinder; 17. Damper; 18. Buffer spring; 19. Guide rod; 20. Buffer plate; 21. Support rod; 22. Cross slider; 23. Shock-absorbing spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1

[0026] See also Figures 1 to 3The utility model provides a technical solution: a gantry crane for a downward bridge erection machine, comprising a main beam 1, an electric hoist 2 and a matching plate 3, end beams 4 are installed at both ends of the main beam 1, a lifting trolley 5 is arranged inside the main beam 1, and a fixing plate 6 is installed at the bottom of the lifting trolley 5, and a T-shaped positioning groove with the front and rear directions as the depth direction is opened in the front of the fixing plate 6, and the end of the T-shaped positioning block 14 is inserted into the inside of the T-shaped positioning groove, and cavity blocks 7 are installed on both sides of the fixing plate 6. The interior of the cavity block 7 is provided with a T-shaped slide groove with the left and right directions as the depth direction and the up and down directions as the length direction. The end of the T-shaped slider 10 is located inside the T-shaped slide groove, and the T-shaped slider 10 can be moved along the length direction of the T-shaped slide groove. Sliding, a limiting spring 8 is installed inside the cavity block 7, and a limiting baffle 9 is installed at one end of the limiting spring 8. The side of the limiting baffle 9 close to the T-shaped slider 10 abuts against the bolt 13, and the matching plate 3 abuts against the fixed plate 6. A T-shaped slider 10 is installed on one side of the limiting baffle 9, and a push block 11 is installed on the other side of the limiting baffle 9. A clamping block 12 is installed on one side of the matching plate 3. Threaded holes are provided inside the matching plate 3 and the fixed plate 6, and bolts 13 are provided inside the threaded holes. A T-shaped positioning block 14 is installed on the top of the electric hoist 2, and a card slot with the left and right directions as the depth direction is provided on one side of the T-shaped positioning block 14. The end of the card slot away from the matching plate 3 is inserted into the inside of the card slot.

[0027] When in use, it is moved by the lifting trolley 5 and the heavy objects are lifted by the electric hoist 2. When disassembling and repairing the electric hoist 2, the push block 11 is pushed to make the push block 11 drive the limit baffle 9 and the T-shaped slider 10 to move, so that the limit spring 8 is forced to shrink, and the T-shaped slider 10 moves along the length direction of the T-shaped slide, so that the limit baffle 9 moves downward away from the bolt 13, and then the bolt 13 is screwed off, and the matching plate 3 is moved to make the block 12 leave the slot, and then the electric hoist 2 is moved to make the T-shaped positioning block 14 leave the T-shaped positioning slot, which is convenient for disassembling and repairing the electric hoist 2. When installing the electric hoist 2, move the electric hoist 2 to make the T-shaped positioning block 14 leave the T-shaped positioning slot. The positioning block 14 is inserted into the interior of the T-shaped positioning slot. When the end of the T-shaped positioning block 14 reaches the end of the T-shaped positioning slot, the matching plate 3 is moved to make the card block 12 inserted into the interior of the card slot. When the matching plate 3 abuts the fixing plate 6, the bolt 13 is tightened to make the bolt 13 enter the interior of the threaded hole in the matching plate 3 and the fixing plate 6, which is convenient for fastening the matching plate 3 and the fixing plate 6. After tightening the bolt 13, the push block 11 is loosened, and the elastic tension of the limit spring 8 is used to make the limit baffle 9 abut against the end of the bolt 13, which is convenient for limiting the position of the bolt 13 and preventing the bolt 13 from loosening and falling, thereby improving the stability of the installation of the electric hoist 2 and improving practicality.

[0028] Example 2

[0029] See also Figures 1 to 5The utility model provides a technical solution: a gantry crane for a downward bridge erection machine, wherein strip plates 15 are installed on both sides of the lifting trolley 5, and a cross slide is opened on one side of the strip plate 15 with the left and right direction as the depth direction and the front and back direction as the length direction. The cross slide 22 is located inside the cross slide, and the cross slide 22 can slide along the length direction of the cross slide. One end of the shock-absorbing spring 23 is installed inside the cross slide, and a guide cylinder 16 and a damper 17 are respectively installed on one side of the strip plate 15. The end of the damper 17 away from the strip plate 15 is connected to the buffer plate 20, and the guide rod 1 9 The end away from the buffer plate 20 is located inside the guide cylinder 16, and a buffer spring 18 is installed inside the guide cylinder 16. A guide rod 19 is installed at one end of the buffer spring 18. The buffer plate 20 is installed at the end of the guide rod 19 away from the buffer spring 18. The position of the buffer plate 20 corresponds to the position of the end beam 4. The lifting trolley 5 and the electric hoist 2 are electrically connected to the external power supply through wires. One side of the buffer plate 20 is connected to a support rod 21 through a shaft. The end of the support rod 21 away from the buffer plate 20 is connected to a cross slider 22 through a shaft. A shock-absorbing spring 23 is installed at one end of the cross slider 22.

[0030] During use, when the lifting trolley 5 moves to the end of the main beam 1, when the buffer plate 20 abuts against the end beam 4, the buffer plate 20 moves relative to the lifting trolley 5, causing the guide rod 19 to move toward the inside of the guide cylinder 16, causing the buffer spring 18 to be forced to contract, and the movement of the buffer plate 20 drives the support rod 21 to rotate within a certain range. The rotation of the support rod 21 provides a component force in the front and rear directions for the cross slider 22, and the end of the cross slider 22 is located inside the cross slide, causing the cross slider 22 to move along the length direction of the cross slide, causing the shock absorbing spring 23 to be forced. Through the cooperation of the buffer spring 18, the damper 17 and the shock absorbing spring 23, the impact force on the lifting trolley 5 is reduced, and the rigid collision between the lifting trolley 5 and the end beam 4 is avoided, thereby improving the protection effect of the lifting trolley 5 and improving practicality.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gantry crane for a down-type bridge erection machine, comprising a main beam, an electric hoist and a matching plate, characterized in that: End beams are installed at both ends of the main beam, and a lifting trolley is provided inside the main beam. A fixed plate is installed at the bottom of the lifting trolley, and cavity blocks are installed on both sides of the fixed plate. A limit spring is installed inside the cavity block, and a limit baffle is installed at one end of the limit spring, and a T-shaped slider is installed on one side of the limit baffle, and a push block is installed on the other side of the limit baffle, and a clamping block is installed on one side of the matching plate. Threaded holes are provided inside the matching plate and the fixed plate, and bolts are provided inside the threaded holes. A T-shaped positioning block is installed on the top of the electric hoist, and strip plates are installed on both sides of the lifting trolley, and a guide cylinder and a damper are respectively installed on one side of the strip plate, and a buffer spring is installed inside the guide cylinder, and a guide rod is installed at one end of the buffer spring, and a buffer plate is installed at the end of the guide rod away from the buffer spring. One side of the buffer plate is rotatably connected to a support rod through a shaft rod, and the end of the support rod away from the buffer plate is rotatably connected to a cross slider through a shaft rod, and a shock-absorbing spring is installed at one end of the cross slider.

2. A gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: A T-shaped slot is provided inside the cavity block with the left-right direction as the depth direction and the up-down direction as the length direction. The end of the T-shaped slider is located inside the T-shaped slot and the T-shaped slider can slide along the length direction of the T-shaped slot.

3. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: A side surface of the limiting baffle close to the T-shaped sliding block abuts against the bolt, and the matching plate abuts against the fixing plate.

4. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: A clamping slot is provided on one side of the T-shaped positioning block with the left and right directions as the depth direction, and an end of the clamping block away from the matching plate is inserted into the inside of the clamping slot.

5. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: A T-shaped positioning groove with the front-back direction as the depth direction is opened on the front of the fixing plate, and the end of the T-shaped positioning block is inserted into the interior of the T-shaped positioning groove.

6. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: One end of the damper away from the strip plate is connected to the buffer plate, and one end of the guide rod away from the buffer plate is located inside the guide cylinder.

7. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: The position of the buffer plate corresponds to the position of the end beam, and the lifting trolley and the electric hoist are electrically connected to the external power supply through wires.

8. The gantry crane for a down-type bridge erection machine according to claim 1, characterized in that: A cross slide is provided on one side of the strip plate with the left and right directions as the depth direction and the front and back directions as the length direction. The cross slider is located inside the cross slide and can slide along the length direction of the cross slide. One end of the shock-absorbing spring is installed inside the cross slide.

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