Automatic telescopic lifting appliance for duct piece production

Abstract

The utility model relates to the technical field of duct piece production, and discloses an automatic telescopic lifting appliance for duct piece production, which comprises a lifting support, a lifting frame and a pair of lifting feet, the lifting support comprises two support plates arranged front and back, and two support rods arranged left and right are fixed between the two support plates; a pair of symmetrically-arranged guide grooves is formed in the supporting plate. A telescopic cylinder is rotationally connected to the supporting rod. The lifting frame comprises a pair of roller guide rails which are symmetrically arranged front and back; the lifting foot comprises two lifting plates which are symmetrically arranged front and back, and a first guide rod, a second guide rod and a duct piece clamping part are fixed between the two lifting plates; the outer ends of the first guide rods are inserted into the corresponding guide grooves in a sleeved mode. The second guide rod is rotationally connected with a telescopic rod of the telescopic cylinder; and at least two rollers are arranged on the lifting plate and are inserted into the roller guide rails in a sleeving manner. The lifting feet are driven to be unfolded and folded through the telescopic cylinders, automation of lifting appliance operation is achieved, manual operation of workers is not needed, the lifting work efficiency is greatly improved, and the labor intensity of the workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel segment production technology, and in particular to an automatic telescopic lifting device for tunnel segment production. Background Technology

[0002] Most existing lifting devices used in tunnel segment production are semi-automatic. While the lifting legs can automatically retract using gravity, their deployment requires manual operation. This method has several drawbacks: it is labor-intensive, increases worker fatigue, and is relatively inefficient, significantly impacting the overall progress of the lifting operation. Furthermore, manual operation poses certain safety risks, potentially leading to instability during segment transfer. Utility Model Content

[0003] The purpose of this invention is to provide an automatic telescopic lifting device for tunnel segment production. By using a telescopic cylinder to drive the opening and closing of the lifting legs, the operation of the lifting device is automated, eliminating the need for manual operation by workers, greatly improving the efficiency of lifting work and reducing the labor intensity of workers.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An automatic telescopic lifting device for tunnel segment production includes a lifting bracket, a lifting frame, and a pair of symmetrically arranged lifting feet. The lifting frame is vertically slidably connected to the lifting bracket. The lifting bracket includes two front and rear support plates, and two left and right support rods are fixed between the two support plates. A pair of symmetrically arranged guide grooves are formed on the support plates. Telescopic cylinders are rotatably connected to the support rods.

[0006] The lifting frame includes a pair of roller guides arranged symmetrically front and rear;

[0007] The lifting feet include two symmetrically arranged lifting plates, with a first guide rod, a second guide rod, and a segment clamping part fixed between the two plates. The outer end of the first guide rod is inserted into a corresponding guide groove. The second guide rod is rotatably connected to the telescopic rod of the telescopic cylinder. Each lifting plate is equipped with at least two rollers, which are inserted into roller guide rails. In use, the lifting frame is fixed to the corresponding lifting equipment, which drives the entire lifting device to move. The telescopic cylinder drives the second guide rod to move, thereby causing the lifting plate to move along the roller guide rails via the rollers. Simultaneously, the movement of the lifting plate drives the first guide rod to move, which, through its interaction with the guide groove, drives the lifting frame to move vertically on the lifting frame. The telescopic cylinder can automatically open and close the lifting feet, facilitating segment clamping and improving clamping stability.

[0008] The present invention is further configured such that: the segment clamping part includes an arc-shaped plate and a side baffle fixed to the bottom of the two hanging plates;

[0009] The arc-shaped plate is set with the inner part higher than the outer part.

[0010] During hoisting, the arc-shaped plate is inserted into the lower end of the segment and abuts against the lower side wall of the segment, serving as the main support; the side baffles abut against both sides of the segment to prevent the segment from moving and avoid the segment from falling off the hoisting equipment.

[0011] The present invention is further configured such that: a nylon pad is fixed on the arc-shaped plate and the side baffle; the nylon pad can increase the friction with the tube segment, thereby further improving stability and further reducing the probability of tube segment slippage. At the same time, the nylon pad can protect the outer surface of the tube segment and reduce damage to the outer surface of the tube segment.

[0012] The present invention is further configured such that a rectangular support block is fixed on the hanging plate, and the rectangular support block abuts against the lifting frame. During hoisting, the rectangular support block abuts against the lifting frame, which can share the supporting force of the rollers. At the same time, the rectangular support block is connected to the lifting frame with its surface, which can increase stability.

[0013] The present invention is further configured such that: the roller is rotatably connected to the support shaft, and the support shaft is fixedly connected to the hanging plate;

[0014] The roller is a tapered roller; a tapered groove is formed on the roller guide rail, and the roller is inserted into the tapered groove; a gap is left between the upper inner wall of the tapered groove and the upper outer wall of the roller. The gap allows the roller to slide more smoothly on the roller guide rail, avoiding jamming.

[0015] This invention is further configured such that: a spring mounting hole is formed inside the roller, and multiple disc springs are sleeved inside the spring mounting hole, with the disc springs clamped between the shoulder of the support shaft and the bottom surface of the spring mounting hole. The disc springs can drive the roller to move into the conical groove, thereby driving the lifting frame to move down and detach from the rectangular support block, thus reducing the resistance to the movement of the lifting feet when no pipe segments are being lifted.

[0016] The outstanding effect of this utility model is:

[0017] Compared with existing technologies, the opening and closing of the lifting legs is controlled by telescopic cylinders, which automates the operation of the lifting legs, eliminating the need for manual operation by workers, greatly improving the efficiency of lifting work and reducing the labor intensity of workers;

[0018] The arc-shaped plate, side baffle, and nylon pad design of the segment clamping part can stably clamp the segments, preventing them from moving or falling during the transfer process, thus improving the safety and stability of the segment transfer. At the same time, it protects the outer surface of the segments and reduces possible damage during the transfer process.

[0019] The rollers feature a tapered design that mates with tapered grooves on the roller guide rail, with a gap between them. This allows the rollers to slide more smoothly, preventing jamming and ensuring the normal movement of the lifting feet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a partial schematic diagram of the hanging foot of this utility model.

[0023] Reference numerals: 1. Hanging bracket; 11. Support plate; 12. Support rod; 13. Guide groove; 14. Telescopic cylinder;

[0024] 2. Lifting frame; 21. Roller guide rail;

[0025] 3. Suspension foot; 31. Suspension plate; 32. First guide rod; 33. Second guide rod; 34. Segment clamping part; 35. Roller; 36. Rectangular support block; 37. Disc spring; 38. Support shaft;

[0026] 341. Curved plate; 342. Side baffle; 343. Nylon pad;

[0027] 9. Pipe segments. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] The following is for reference Figures 1 to 3 The present invention will be described as follows:

[0030] An automatic telescopic lifting device for tunnel segment production includes a lifting bracket 1, a lifting frame 2, and a pair of symmetrically arranged lifting feet 3. The lifting frame 2 is vertically slidably connected to the lifting bracket 1. The lifting bracket 1 includes two front and rear support plates 11, and two left and right support rods 12 are fixed between the two support plates 11. A pair of symmetrically arranged guide grooves 13 are formed on the support plates 11. Telescopic cylinders 14 are rotatably connected to the support rods 12.

[0031] The lifting frame 2 includes a pair of roller guide rails 21 arranged symmetrically in front and behind;

[0032] The lifting foot 3 includes two symmetrically arranged lifting plates 31, with a first guide rod 32, a second guide rod 33, and a segment clamping part 34 fixed between the two lifting plates 31. The outer end of the first guide rod 32 is inserted into the corresponding guide groove 13. The second guide rod 33 is rotatably connected to the telescopic rod of the telescopic cylinder 14. At least two rollers 35 are provided on the lifting plate 31, and the rollers 35 are inserted into the roller guide rail 21. In use, the lifting bracket 1 is fixed to the corresponding lifting equipment, and the entire lifting device is moved by the lifting equipment. The telescopic cylinder 14 can drive the second guide rod to move, thereby driving the lifting plate to move on the roller guide rail via the rollers. At the same time, when the lifting plate moves, it drives the first guide rod to move. The first guide rod, through its cooperation with the guide groove, drives the lifting frame to move vertically on the lifting bracket. The telescopic cylinder can drive the lifting foot to automatically open and close, thereby facilitating the clamping of the segment 9 and improving the clamping stability.

[0033] The segment clamping part 34 includes an arc-shaped plate 341 and a side baffle 342 fixed to the bottom of the two hanging plates 31;

[0034] The arc-shaped plate 341 is set with the inner side higher than the outer side.

[0035] During hoisting, the arc-shaped plate is inserted into the lower end of the segment and abuts against the lower side wall of the segment, serving as the main support; the side baffles abut against both sides of the segment to prevent the segment from moving and avoid the segment from falling off the hoisting equipment.

[0036] Nylon pads 343 are fixed on the arc-shaped plate 341 and the side baffle 342. The nylon pads can increase the friction with the tube segments, thereby further improving stability and reducing the probability of tube segment slippage. At the same time, the nylon pads can protect the outer surface of the tube segments and reduce damage to the outer surface of the tube segments.

[0037] A rectangular support block 36 is fixed on the lifting plate 31, and the rectangular support block 36 abuts against the lifting frame 2. During hoisting, the rectangular support block abuts against the lifting frame, which can share the supporting force of the rollers. At the same time, the rectangular support block is connected to the lifting frame with its surface, which can increase stability.

[0038] The roller 35 is rotatably connected to the support shaft 38, and the support shaft 38 is fixedly connected to the hanging plate 31.

[0039] The roller 35 is a tapered roller; a tapered groove 22 is formed on the roller guide rail 21, and the roller 35 is inserted into the tapered groove 22; a gap is left between the upper inner wall of the tapered groove 22 and the upper outer wall of the roller 35. The gap allows the roller to slide more smoothly on the roller guide rail and avoids jamming.

[0040] The roller 35 has a spring mounting hole formed inside, and multiple disc springs 37 are sleeved in the spring mounting hole. The disc springs 37 are clamped between the shoulder of the support shaft 38 and the bottom surface of the spring mounting hole. The disc springs can drive the roller to move into the conical groove, thereby driving the lifting frame to move down and separate from the rectangular support block, thus reducing the resistance of the lifting foot movement when there are no pipe segments being lifted.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An automatic telescopic lifting device for tunnel segment production, comprising a lifting bracket (1), a lifting frame (2), and a pair of symmetrically arranged lifting feet (3), wherein the lifting frame (2) is vertically slidably connected to the lifting bracket (1); characterized in that: The hanging bracket (1) includes two front and rear support plates (11), and two left and right support rods (12) are fixed between the two support plates (11); a pair of symmetrically arranged guide grooves (13) are formed on the support plates (11); and telescopic cylinders (14) are rotatably connected to the support rods (12). The lifting frame (2) includes a pair of roller guide rails (21) arranged symmetrically in front and behind; The lifting foot (3) includes two symmetrically arranged lifting plates (31), with a first guide rod (32), a second guide rod (33) and a segment clamping part (34) fixed between the two lifting plates (31); the outer end of the first guide rod (32) is inserted into the corresponding guide groove (13); the second guide rod (33) is rotatably connected to the telescopic rod of the telescopic cylinder (14); at least two rollers (35) are provided on the lifting plate (31), and the rollers (35) are inserted into the roller guide rail (21).

2. The automatic telescopic lifting device for segment production according to claim 1, characterized in that: The segment clamping part (34) includes an arc-shaped plate (341) and a side baffle (342) fixed to the bottom of the two hanging plates (31). The arc-shaped plate (341) is set with the inner part higher than the outer part.

3. The automatic telescopic lifting device for segment production according to claim 2, characterized in that: Nylon pads (343) are fixed on the arc-shaped plate (341) and the side baffle (342).

4. The automatic telescopic lifting device for segment production according to claim 1, characterized in that: A rectangular support block (36) is fixed on the hanging plate (31), and the rectangular support block (36) is attached to the lifting frame (2).

5. The automatic telescopic lifting device for segment production according to claim 4, characterized in that: The roller (35) is rotatably connected to the support shaft (38), and the support shaft (38) is fixedly connected to the hanging plate (31); The roller (35) is a conical roller; a conical groove (22) is formed on the roller guide rail (21), and the roller (35) is inserted into the conical groove (22); a gap is left between the upper inner wall of the conical groove (22) and the upper outer wall of the roller (35).

6. The automatic telescopic lifting device for segment production according to claim 4, characterized in that: The roller (35) has a spring mounting hole formed inside, and multiple disc springs (37) are sleeved inside the spring mounting hole. The disc springs (37) are clamped between the shoulder of the support shaft (38) and the bottom surface of the spring mounting hole.

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