Concrete duct piece demolding clamp

Abstract

The utility model relates to the technical field of duct piece demolding, and discloses a concrete duct piece demolding clamp which comprises a first clamping portion, a second clamping portion, a third clamping portion and a fourth clamping portion. The hydraulic machine is arranged at the circular hole of the clamping part I in a sliding manner; the movable plate is obliquely arranged in the cavity of the first clamping part, and the top end of the movable plate is fixedly connected with the rotating shaft; the first clamping part can move up and down along with rotation of the lead screw, when the movable plate is pressed downwards, the bottom end of the movable plate can move towards the two sides along an opening in the lower end of the first clamping part, and when the movable plate is pressed downwards to be parallel to the supporting block, the cushion block on the surface of the movable plate can be higher than the lower end of the supporting block; not only is the transportation stability of the duct pieces in the use process of the machine improved, but also the use universality of the machine is improved, and the use efficiency of the machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment demoulding, in particular to a concrete pipe segment demoulding clamp. Background Art

[0002] At present, concrete segments are the main assembly components of shield construction. Concrete is poured in the mold and taken out from the mold after the concrete solidifies to form concrete segments. When demolding, vacuum suction cups or hydraulic clamps are generally used.

[0003] When using a clamp for demolding, the two jaws of the clamp are generally attached to the side walls of the demolding material, while the center of the clamp is in contact with the curved upper wall of the demolding material. The center of the clamp generally adopts a flat structure, and the contact with the arc is unstable, which can easily cause the pipe segment to tilt and shake. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a concrete segment demoulding fixture, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: comprising: a clamping part 1, wherein a circular hole is formed at the upper end of the clamping part 1;

[0006] The hydraulic press is fixed on the inner wall of the fixed plate, and the output end of the hydraulic press slides through the circular hole of the clamping part 1;

[0007] a baffle, arranged at the upper end of the hydraulic press;

[0008] The rotating shaft is provided in two sets and is rotatably mounted on the lower end of the hydraulic press;

[0009] The movable plate is tiltedly arranged in the cavity of the clamping portion 1, and the top end of the movable plate is fixedly connected to the rotating shaft;

[0010] The pad is fixedly installed on the lower end surface of the movable plate.

[0011] Furthermore, openings are provided at the bottom ends of both sides of the clamping portion 1, and support blocks are fixedly provided below the openings. The front end of the movable plate slides along the bottom of the groove of the support block.

[0012] Furthermore, a large force arm is provided on one side of the clamping part, a slot is provided on the bent part of the large force arm, a screw rod is rotatably installed in the slot, a slider is engaged with the surface of the screw rod, and one side of the slider is fixedly connected to the clamping part.

[0013] Furthermore, a second clamping portion is fixedly provided on the lower end of the strong arm at a side close to the first clamping portion.

[0014] Furthermore, a fixing plate is fixedly installed on the inner wall of the strong arm.

[0015] Furthermore, a support is provided at the upper end of the powerful arm, the support passes through both sides of the powerful arm, and fixing plates are fixedly installed at both ends of the support.

[0016] Furthermore, several groups of telescopic frames are provided on the surface of the pillar, and a hanging hole is fixedly provided at the top center of the telescopic frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The clamping part 1 of the present application can move up and down with the rotation of the screw rod. When the clamping part 1 clamps the concrete pipe segment, the arc shape of the lower end face of the clamping part fits the arc surface of the pipe segment, so that the clamping part 1 can perform a secondary clamping of the pipe segment when used in conjunction with the clamping part 2, which can effectively prevent the pipe segment from tilting or falling off during the clamping and moving process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a side view of the telescopic frame of the utility model;

[0020] Figure 2 It is a cross-sectional view of the screw rod of the utility model;

[0021] Figure 3 This is an enlarged view of the slider of the utility model;

[0022] Figure 4 This is a cross-sectional view of the first clamping portion of the present invention;

[0023] Figure 5 This is a bottom view of the movable plate of the utility model;

[0024] Figure 6 It is an enlarged view of the cushion block of the present utility model.

[0025] In the figure: 1. Fixed plate; 2. Telescopic frame; 3. Hanging hole; 4. Strong arm; 5. Fixed plate; 6. Screw; 7. Slider; 8. Clamping part 1; 9. Clamping part 2; 10. Baffle; 11. Hydraulic press; 12. Support block; 13. Rotating shaft; 14. Movable plate; 15. Pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-6, including a clamping part 8, a hydraulic press 11 is fixed to the inner wall of the fixed plate 1, the output end of the hydraulic press 11 slides through the circular hole of the clamping part 8, and a baffle 10 is provided on the upper end of the hydraulic press 11, a slide groove is provided inside the baffle 10, the upper end of the hydraulic press 11 will be larger than the slide groove of the baffle 10, so that the baffle 10 will limit the downward pressure of the hydraulic press 11, and the lower end of the hydraulic press 11 is rotatably installed with a rotating shaft 13, and the movable plate 14 is provided with two sets of inclined plates arranged on the clamping part 1 8, and the top of the movable plate 14 is fixedly connected to the rotating shaft 13. The downward pressure of the hydraulic press 11 will cause the top of the two sets of movable plates 14 to move downward, and the rotating shaft 13 fixedly connected to the movable plate 14 will drive the movable plate 14 to rotate following the downward pressure of the hydraulic press 11. The bottom end of the movable plate 14 is located on the surface of the support block 12 when the hydraulic press 11 is not pressed down. When the hydraulic press 11 is pressed down, the bottom end of the movable plate 14 will be supported by the surface of the support block 12, so that it The movable plate 14 moves radially in the opening of the clamping part 8. Since the movable plate 14 is in an inclined state when being pressed down and moves in the opening of the clamping part 8, the upper end of the opening of the clamping part 8 is opened as a slope surface consistent with the inclined surface of the movable plate 14, so that the movable plate 14 will not be restricted by the upper end of the opening when it moves radially in the opening of the clamping part 8, and the opening at the lower end of the clamping part 8 is slightly larger than the surface of the movable plate 14, so that the movable plate 14 will not be stuck when it moves in the opening of the clamping part 8. Due to the downward pressure of the hydraulic press 11, the movable plate 14 is fitted to the bottom end of the opening of the clamping part 8, and the movable plate 14 will not shake in the opening of the clamping part 8. When the movable plate 14 is pressed down to a horizontal position, the pad 15 on the lower end surface of the movable plate 14 will be higher than the support block 12. At this time, the pad 15 will block the notch of the arc surface at the lower end of the clamping part 8, making it flat, so that the square pipe segment can be stably clamped.

[0028] A large force arm 4 is provided on one side of the clamping part 8, and a notch is provided on the bent part of the large force arm 4. A screw rod 6 is provided in the notch for rotation, and a motor is provided inside the clamping part 8. The motor drives the screw rod 6 to rotate. A slider 7 is engaged with the surface of the screw rod 6. The rotation of the screw rod 6 can make the slider 7 move up and down, and the clamping part 8 is fixedly connected to one side of the slider 7, so that the slider 7 moves synchronously with the clamping part 8. A clamping part 2 9 is provided at the lower end of the large force arm 4. The clamping part 2 9 is composed of two parts. The middle of the upper end of part 2 9 is a plane, and on both sides are arc surfaces with downward notches that match the lower end surface of clamping part 1 8, and the arc surfaces of clamping part 1 8 and clamping part 2 9 can fit together, which makes clamping part 1 8 cooperate with clamping part 2 9 during operation, which will make it more convenient to clamp the curved pipe segment and improve its stability when clamping the curved pipe segment and moving. When the hydraulic press 11 presses the movable plate 14 down to a horizontal state, the pad 15 can be used in conjunction with the middle plane of the upper end of clamping part 2 9, making it more convenient to clamp the square pipe segment.

[0029] A fixing plate 5 is fixedly installed on the inner wall of the powerful arm 4, and a pillar is provided on the upper end of the powerful arm 4. The pillar runs through both sides of the powerful arm 4, and fixed plates 1 are fixedly installed at both ends of the pillar. Several groups of telescopic frames 2 are provided on the surface of the pillar. The telescopic frame 2 is a common tensile structure. When the machine clamps the pipe segment, the overhead crane lifts the machine, and the telescopic frame 2 will be stretched due to the gravity of the pipe segment. The powerful arm 4 connected to the telescopic frame 2 will self-tighten the pipe segment due to the stretching of the telescopic frame 2. A hanging hole 3 is fixed on the top of the telescopic frame 2.

[0030] Working principle: hoist the machine at the pipe segment, start the internal motor of the clamping part 8, and make the screw 6 drive the clamping part 8 to descend, so that it cooperates with the clamping part 2 9 to clamp the upper and lower end faces of the pipe segment. At the same time, when the overhead crane lifts the machine, the inner wall of the strong arm 4 will further clamp the pipe wall due to the gravity of the pipe segment. When a square pipe segment is to be clamped, the hydraulic press 11 can be started to press the movable plate 14 down to a horizontal state, and the pad 15 at the lower end of the movable plate 14 will cooperate with the plane in the middle of the clamping part 2 9 to clamp the square pipe segment. The pad 15 can be a rubber sheet, which is easy to replace, so that the machine can switch the clamping surface according to the shape of the pipe segment.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete segment demoulding fixture comprising: A clamping portion (8), wherein a circular hole is provided at the upper end of the clamping portion (8); It is characterized by further comprising: A hydraulic press (11), the hydraulic press is fixed to the inner wall of the fixed plate (1), and the output end of the hydraulic press slides through the circular hole of the clamping part (8); A baffle (10) is provided at the upper end of the hydraulic press (11); A rotating shaft (13) is provided in two groups and is rotatably mounted on the lower end of the hydraulic press (11); A movable plate (14) is obliquely arranged in the cavity of the clamping portion (8), and the top end of the movable plate (14) is fixedly connected to the rotating shaft (13); A cushion block (15) is fixedly mounted on the lower end surface of the movable plate (14).

2. A concrete segment demoulding fixture according to claim 1, characterized in that: The bottom ends of both sides of the clamping portion (8) are provided with openings, and a support block (12) is fixedly provided below the opening. The front end of the movable plate (14) slides along the bottom of the groove of the support block (12).

3. The concrete segment demoulding fixture according to claim 1, characterized in that: A large force arm (4) is provided on one side of the clamping portion (8), a notch is provided on the bent portion of the large force arm (4), a screw rod (6) is rotatably installed in the notch, a slider (7) is engaged with the surface of the screw rod (6), and one side of the slider (7) is fixedly connected to the clamping portion (8).

4. The concrete segment demoulding fixture according to claim 1, characterized in that: The lower end of the strong arm (4) is fixedly provided with a clamping portion 2 (9) on a side close to the clamping portion 1 (8).

5. The concrete segment demoulding fixture according to claim 1, characterized in that: A fixing plate (5) is fixedly mounted on the inner wall of the large force arm (4).

6. The concrete segment demoulding fixture according to claim 1 is characterized in that: A support is provided at the upper end of the powerful arm (4), the support passes through both sides of the powerful arm (4), and fixing plates (1) are fixedly installed at both ends of the support.

7. The concrete segment demoulding fixture according to claim 1, characterized in that: Several groups of telescopic frames (2) are provided on the surface of the pillar, and a hanging hole (3) is fixedly provided at the center of the top end of the telescopic frame (2).

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