Safe rail clamping device of portal crane

Abstract

The utility model discloses a safe rail clamping device of a portal crane, and particularly relates to the technical field of portal cranes, which comprises a fixed seat, a rail clamping device and a rail clamping device, the cavity groove is formed in the bottom side of the fixing base, two connecting shafts are symmetrically connected to the middle of the interior of the cavity groove through bearings, and first fixing arms are fixed to the bottom ends of the two connecting shafts correspondingly; the connecting shaft, the first fixed arm, the movable block, the clamping arms and the like are arranged on the fixed seat, and under the matching of the transmission assembly and the control mechanism, the movable block can drive the two clamping arms to move towards each other or away from each other by rotating the fixed handle forwards and backwards, so that the clamping arms drive the two clamping blocks to be quickly closed or separated; the clamping blocks can abut against the side wall of the track during closing to achieve braking, otherwise, braking can be relieved, the linkage performance is high, operation is easy and convenient, working efficiency is high, stability and efficiency are achieved, and the using effect of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a safety rail clamp for gantry cranes. Background Art

[0002] Gantry crane is a variation of bridge crane. In ports, it is mainly used for loading and unloading of outdoor cargo yards, material yards, and bulk cargo. Its metal structure is like a door-shaped frame, with two legs installed under the main beam, which can walk directly on the track on the ground. Both ends of the main beam can have outward cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port cargo yards.

[0003] The track clamp is a crane safety device that prevents outdoor cranes from sliding along the track under strong winds. Existing track clamps are usually operated manually or electrically. For manual track clamps, multiple bolts are often used to drive two clamping blocks to move and press against the side of the track. However, in actual use, the linkage between the two clamping blocks is poor, and they often need to be loosened and tightened separately. The operation is cumbersome and inconvenient, and the work efficiency is low, which greatly affects the use effect of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a gantry crane safety rail clamp, which is provided with a connecting shaft, a first fixed arm, a movable block and a clamping arm and other structures on a fixed seat, and with the cooperation of a transmission component and a control mechanism, by rotating the fixed handle forward and backward, the movable block can drive the two clamping arms to move toward or away from each other, so that the clamping arm drives the two clamping blocks to close or separate quickly. When closing, the clamping blocks can be pressed against the side walls of the track to achieve braking, and vice versa, the braking can be released. The linkage is strong, the operation is simple and convenient, the working efficiency is high, and the device is stable and efficient, which greatly improves the use effect of the device to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a gantry crane safety rail clamp, comprising:

[0006] A fixing seat, a mounting frame being fixed on the top of the fixing seat;

[0007] A cavity groove, wherein the cavity groove is opened at the bottom side of the fixed seat, and two connecting shafts are symmetrically connected to the middle of the cavity groove through a bearing, the bottom ends of the two connecting shafts are fixed with a first fixed arm, and the two first fixed arms are symmetrically connected to the second fixed arm via a rotating shaft relative to one end of the connecting shaft, and the second fixed arm is rotatably connected to a movable block via a rotating shaft relative to one end of the first fixed arm, and the bottom end of the movable block extends outside the fixed seat and is detachably connected to a clamping arm, and the inner sides of the bottom ends of the two clamping arms are fixed with clamping blocks;

[0008] A transmission assembly is arranged in the cavity, and the transmission assembly is used to drive the two connecting shafts to rotate toward or away from each other. A control mechanism is arranged on the fixing seat, and the control mechanism is connected to the transmission assembly.

[0009] Preferably, the transmission assembly includes a movably arranged support column on the inner side of the cavity, a tooth plate is fixed to the side wall of the support column, transmission gears are fixed to the top ends of the two connecting shafts, the two transmission gears are meshed with each other, a driving gear is fixed to the middle end of one of the connecting shafts between the transmission gear and the first fixed arm, and the driving gear is meshed with the tooth plate.

[0010] Preferably, the control mechanism includes a sliding cavity opened on the inner side of the cavity toward the support column, the interior of the sliding cavity is rotatably connected to a screw rod through a bearing, the outer wall of the screw rod is connected to a moving block through a threaded engagement, and one end of the screw rod extends to the outside of the fixed seat and is connected to a fixed handle, and one end of the moving block extends to the outside of the sliding cavity and is fixedly connected to the support column.

[0011] Preferably, a limit rod is connected between the two movable blocks, and support seats are symmetrically fixed at both ends of the limit rod, and the support seat is fixedly connected to the fixed seat.

[0012] Preferably, a clamping block is fixed to the bottom end of the movable block, a clamping slot matching the clamping block is formed at the top end of the clamping arm, and a fixing component is provided between the clamping block and the clamping slot.

[0013] Preferably, the fixing assembly comprises a screw hole provided on the outer wall of the clamp arm and facing the clamping slot, a fixing bolt is screwed into the screw hole, and a positioning hole facing the fixing bolt is provided on the side wall of the clamping block.

[0014] Preferably, the side walls of the clamping block are provided with rubber pads.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] By arranging a connecting shaft, a first fixed arm, a movable block and a clamping arm and other structures on the fixed seat, and with the cooperation of a transmission component and a control mechanism, by rotating the fixed handle forwards and backwards, the movable block can drive the two clamping arms to move toward or away from each other, so that the clamping arm drives the two clamping blocks to close or separate quickly. When closing, the clamping block can be pressed against the side wall of the track to achieve braking, and vice versa. The braking can be released, and the linkage is strong. It is not only simple and convenient to operate, but also has high work efficiency and is stable and efficient, which greatly improves the use effect of the device.

[0017] By arranging a clamping block, a clamping slot and a fixing assembly between the movable block and the clamping arm, the clamping block can be locked in the clamping slot, so that the clamping arm and the movable block can be fastened together. Conversely, the clamping arm and the movable block can be disassembled and separated for disassembly and maintenance, which greatly improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the fixing seat of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the connection between the connecting shaft and the clamping arm of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the utility model when the movable block is separated from the clamping arm.

[0023] Description of reference numerals:

[0024] 1. Fixed seat; 2. Mounting frame; 3. Clamp arm; 4. Clamp block; 5. Connecting shaft; 6. First fixed arm; 7. Second fixed arm; 8. Movable block; 9. Limit rod; 10. Support seat; 11. Transmission gear; 12. Drive gear; 13. Support column; 14. Tooth plate; 15. Cavity; 16. Sliding cavity; 17. Moving block; 18. Screw; 19. Fixed handle; 20. Block; 21. Cavity; 22. Screw hole; 23. Fixing bolt; 24. Positioning hole. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-Figure 3 A gantry crane safety rail clamp is shown, comprising:

[0027] A fixing seat 1, a mounting frame 2 is fixed on the top of the fixing seat 1;

[0028] The cavity 15 is provided at the bottom side of the fixed seat 1, and two connecting shafts 5 are symmetrically connected to the middle of the cavity 15 through a bearing, the bottom ends of the two connecting shafts 5 are fixed with first fixing arms 6, one end of the two first fixing arms 6 relative to the connecting shaft 5 is symmetrically connected to the second fixing arm 7 through a rotating shaft, the second fixing arm 7 is rotatably connected to a movable block 8 relative to one end of the first fixing arm 6 through a rotating shaft, the bottom end of the movable block 8 extends to the outside of the fixed seat 1 and is detachably connected to a clamping arm 3, and the inner sides of the bottom ends of the two clamping arms 3 are fixed with clamping blocks 4;

[0029] A transmission assembly is disposed in the cavity 15 , and the transmission assembly is used to drive the two connecting shafts 5 to rotate toward or away from each other. A control mechanism is disposed on the fixing seat 1 , and the control mechanism is connected to the transmission assembly.

[0030] The transmission assembly includes a support column 13 which is movably arranged on the inner side of the cavity 15, and a tooth plate 14 is fixed to the side wall of the support column 13. Transmission gears 11 are fixed to the top ends of the two connecting shafts 5, and the two transmission gears 11 are meshed with each other. A driving gear 12 is fixed to the middle end of one of the connecting shafts 5 between the transmission gear 11 and the first fixed arm 6, and the driving gear 12 is meshed with the tooth plate 14.

[0031] The control mechanism includes a sliding cavity 16 opened on the inner side of the cavity 15 toward the support column 13, the interior of the sliding cavity 16 is rotatably connected to a screw rod 18 through a bearing, the outer wall of the screw rod 18 is screwed with a moving block 17 through a thread, and one end of the screw rod 18 extends to the outside of the fixed seat 1 and is connected to a fixed handle 19, and one end of the moving block 17 extends to the outside of the sliding cavity 16 and is fixedly connected to the support column 13.

[0032] A limit rod 9 is connected between the two movable blocks 8, and support seats 10 are symmetrically fixed at both ends of the limit rod 9, and the support seat 10 is fixedly connected to the fixed seat 1. The limit rod 9 can support and limit the movable block 8 to ensure the stability of the movable block 8 movement.

[0033] When in use, the fixed handle 19 can be rotated to make the fixed handle 19 drive the screw rod 18 to rotate, and then the screw rod 18 drives the moving block 17 to slide in the sliding cavity 16, and then the moving block 17 can drive the supporting column 13 to move, so that the supporting column 13 drives the toothed plate 14 to move, and then the toothed plate 14 drives the driving gear 12 to rotate. Under the transmission of the connecting shaft 5, the two transmission gears 11 can be meshed and rotated, so that the two connecting shafts 5 can rotate inward or outward at the same time, and then the connecting shaft 5 drives the first fixed arm 6 to rotate, so that the first fixed arm 6 drives the second fixed arm 7 to rotate, and then the second fixed arm 7 drives the movable block 8 to slide on the limiting rod 9, so that the movable block 8 drives the clamping arm 3 to move, and by rotating the fixed handle 19 forward and backward, the clamping arm 3 can drive the two clamping blocks 4 to close or separate quickly. When closing, the clamping block 4 can be pressed against the side wall of the track to achieve braking, and vice versa, the braking can be released, and the linkage is strong, not only the operation is simple and convenient, but also the working efficiency is high, and it is stable and efficient, which greatly improves the use effect of the device.

[0034] The utility model provides Figure 4 In the illustrated gantry crane safety rail clamp, a clamping block 20 is fixed to the bottom end of the movable block 8, a clamping slot 21 matching the clamping block 20 is formed at the top end of the clamping arm 3, and a fixing component is provided between the clamping block 20 and the clamping slot 21.

[0035] The fixing assembly includes a screw hole 22 formed on the outer wall of the clamp arm 3 and facing the clamping slot 21 . A fixing bolt 23 is screwed into the screw hole 22 . A positioning hole 24 facing the fixing bolt 23 is formed on the side wall of the clamping block 20 .

[0036] By inserting the clamping block 20 into the clamping slot 21, the clamping arm 3 can be preliminarily connected to the movable block 8, and the fixing bolt 23 is screwed into the screw hole 22, and the end of the fixing bolt 23 is inserted tightly into the positioning hole 24, so that the clamping block 20 can be locked in the clamping slot 21, and then the clamping arm 3 and the movable block 8 can be fastened together. Conversely, the clamping arm 3 and the movable block 8 can be disassembled and separated for disassembly and maintenance.

[0037] The side wall of the clamping block 4 is provided with a rubber pad. The elasticity of the rubber pad can further enhance the clamping effect.

[0038] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gantry crane safety rail clamp, characterized in that: include: A fixing seat (1), a mounting frame (2) being fixed on the top of the fixing seat (1); A cavity (15), wherein the cavity (15) is provided at the bottom side of the fixed seat (1), and two connecting shafts (5) are symmetrically connected to the middle of the cavity (15) via a bearing, the bottom ends of the two connecting shafts (5) are fixed with a first fixed arm (6), one end of the two first fixed arms (6) relative to the connecting shaft (5) is symmetrically connected to a second fixed arm (7) via a rotating shaft, one end of the second fixed arm (7) relative to the first fixed arm (6) is rotatably connected to a movable block (8) via a rotating shaft, the bottom end of the movable block (8) extends outside the fixed seat (1) and is detachably connected to a clamping arm (3), and the inner sides of the bottom ends of the two clamping arms (3) are fixed with a clamping block (4); A transmission assembly is provided in the cavity (15), and the transmission assembly is used to drive the two connecting shafts (5) to rotate towards or away from each other. A control mechanism is provided on the fixed seat (1), and the control mechanism is connected to the transmission assembly.

2. A gantry crane safety rail clamp according to claim 1, characterized in that: The transmission assembly comprises a support column (13) movably arranged inside the cavity (15), a tooth plate (14) being fixed to the side wall of the support column (13), a transmission gear (11) being fixed to the top end of the two connecting shafts (5), the two transmission gears (11) being meshed with each other, a driving gear (12) being fixed to the middle end of one of the connecting shafts (5) between the transmission gear (11) and the first fixed arm (6), and the driving gear (12) being meshed with the tooth plate (14).

3. A gantry crane safety rail clamp according to claim 2, characterized in that: The control mechanism comprises a sliding cavity (16) formed on the inner side of the cavity groove (15) and facing the support column (13); the interior of the sliding cavity (16) is rotatably connected to a screw rod (18) via a bearing; the outer wall of the screw rod (18) is screwed to a moving block (17) via a thread; one end of the screw rod (18) extends to the outside of the fixed seat (1) and is connected to a fixed handle (19); one end of the moving block (17) extends to the outside of the sliding cavity (16) and is fixedly connected to the support column (13).

4. A gantry crane safety rail clamp according to claim 1, characterized in that: A limiting rod (9) is connected through the two movable blocks (8), and support seats (10) are symmetrically fixed at both ends of the limiting rod (9), and the support seat (10) is fixedly connected to the fixed seat (1).

5. A gantry crane safety rail clamp according to claim 1, characterized in that: A clamping block (20) is fixed at the bottom end of the movable block (8), a clamping slot (21) matching the clamping block (20) is formed at the top end of the clamping arm (3), and a fixing component is provided between the clamping block (20) and the clamping slot (21).

6. A gantry crane safety rail clamp according to claim 5, characterized in that: The fixing assembly comprises a screw hole (22) formed on the outer wall of the clamp arm (3) and facing the clamping slot (21), a fixing bolt (23) being screwed into the screw hole (22), and a positioning hole (24) facing the fixing bolt (23) is formed on the side wall of the clamping block (20).

7. A gantry crane safety rail clamp according to claim 1, characterized in that: The side wall of the clamping block (4) is provided with a rubber pad.

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