Extraction clamp for square brick and PC brick hollowing repair

Abstract

The utility model discloses a lifting clamp for square brick and PC brick hollowing repair. The lifting clamp comprises a vertical rod, a transverse rod, channel steel, a knife shovel and a screw rod. The vertical rods comprise a first vertical rod and a second vertical rod which are symmetrically arranged; one end of the bottom surface of the cross rod is fixed with the top end surface of the first vertical rod; notches of the two steel channels are arranged in a back-to-back manner; the top faces of the two pieces of channel steel are fixed to the bottom end faces of the two vertical rods in a one-to-one correspondence mode, and through holes are formed in the middles of the side walls of the two pieces of channel steel. The knife surface of the knife shovel is fixed with the side wall of the channel steel; the screw penetrates through the through holes of the two steel channels, and the two ends of the screw are exposed out of the notches of the two steel channels respectively and can be locked with the two steel channels through nuts. According to the utility model, the cutting edge of the knife shovel is inserted into the gaps at the two sides of the hollow brick, the clamping force is provided through the locking of the screw rod, and the hollow brick is extracted in a two-side clamping manner, so that the completeness of the brick is ensured, and the condition of ceramic cracking and damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of repairing damaged outdoor paving of buildings, and more specifically to an extraction clamp for repairing hollowing of square bricks and PC bricks. Background Art

[0002] At present, for the sake of the beauty of the city's image, most outdoor squares are paved with square bricks or PC bricks. The surface of concrete square bricks is mostly lychee, wavy or rough, and the gap between bricks is only 2 to 3 mm.

[0003] During long-term use, square bricks often become hollow due to vehicle rolling or unqualified paving quality. The conventional repair is to grouting in the gap to repair the hollowness. However, due to the small gap between square bricks, the grouting repair operation cannot be carried out completely. Usually the hollow bricks are pulled out and repaved.

[0004] The extraction of hollow bricks often uses suction cups, but due to the lychee or rough surface of square bricks or PC bricks, suction cups cannot be used. Suction cups usually suck indoor tiles or glass. The extraction of square bricks or PC usually uses tools such as crowbars or plastering shovels to pry up hollow bricks, but this method is not only inefficient, but also prone to porcelain collapse and other phenomena that damage the brick body, increasing the cost of repairing hollow square bricks.

[0005] Therefore, how to provide an extraction fixture for repairing hollow square bricks and PC bricks to ensure that the square bricks can be completely extracted and avoid the occurrence of ceramic chipping, brick body damage, etc. is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of this, the utility model provides an extraction fixture for repairing hollow square bricks and PC bricks, aiming to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An extraction fixture for repairing hollow square bricks and PC bricks, comprising:

[0009] A vertical pole, wherein the vertical pole comprises a first vertical pole and a second vertical pole which are symmetrically arranged;

[0010] A cross bar, one end of the bottom surface of the cross bar is fixed to the top surface of the first vertical bar, and the other end of the cross bar is hinged to the top of the second vertical bar;

[0011] Channel steel, the number of the channel steels is two, the bottom wall surfaces of the two channel steels are parallel and the notches are arranged away from each other; the two channel steels and the two vertical poles are arranged perpendicular to each other, the top walls of the two channel steels are fixed to the bottom end surfaces of the two vertical poles in a one-to-one correspondence, and through holes are opened in the middle of the side walls;

[0012] A blade shovel, wherein one side of the blade surface of the blade shovel is fixed to the side wall of the channel steel, and the blade thereof is exposed from the bottom wall of the channel steel;

[0013] A screw rod passes through the through holes of the two channel steels and has two ends exposed from the notches of the two channel steels respectively. The two ends of the screw rod can be locked with the two channel steels by nuts.

[0014] The beneficial effect of the above technical solution is that when extracting hollow bricks, the blade of the shovel goes deep into the gap on both sides of the brick. After locking the screw, the shovel can clamp the brick, and the cross bar is pulled upward to complete the extraction of the hollow brick. The brick can be easily extracted by clamping it with two shovels, avoiding the occurrence of brick corner collapse and damage.

[0015] Preferably, the vertical poles and the horizontal poles are both made of square steel.

[0016] Preferably, the crossbar includes a fixed square steel and a sliding square steel, one end of the bottom surface of the fixed square steel is fixed to the top surface of one of the vertical poles; one end of the sliding square steel is slidably connected to the inner cavity of the fixed square steel, and the other end is hinged to the top of the other vertical pole. By sliding the sliding square steel along the inner cavity of the fixed square steel, the spacing between the relative blades and shovels can be adjusted to be suitable for clamping bricks of different sizes. The vertical pole is hinged to the other end of the sliding square steel. When the nuts at both ends of the screw are tightened, the hinge at one end of the vertical pole provides sufficient clamping force to ensure that the bricks will not fall off during the clamping process.

[0017] Preferably, the side walls of the fixed square steel and the sliding square steel opposite to each other are provided with a plurality of locking holes corresponding to each other, and locking pins are inserted into the locking holes. The sliding square steel is locked in the inner cavity of the fixed square steel by using the locking pins to fix the distance between the two opposite blades and shovels, so as to facilitate adjusting the clamping distance between the clamps according to bricks of different sizes.

[0018] Preferably, the top of the vertical rod is connected to the end of the sliding square steel away from the fixed square steel through a pin. The pin connection allows one vertical rod to rotate around one end of the sliding square steel, and when the nut of the screw is tightened, it provides sufficient clamping force for the clamp to clamp the brick.

[0019] Preferably, threads are provided at both ends of the screw rod, and pads are provided on the end faces of the nut and the channel steel opposite to the notch. Since the channel steel is used to fix the blade, the notch of the channel steel is blocked by the pads, which facilitates the tightening of the nut.

[0020] Preferably, a top support is fixed to the plate surface of the backing plate away from the channel steel notch that is in contact with it, and the top support comprises an internal threaded tube, a rotating rod, a turning handle and a supporting plate;

[0021] The internally threaded tube is arranged vertically and its outer wall is fixed on the panel of the pad, the rod wall of the rotating rod is provided with an external thread, and the rotating rod is threadedly connected to the inner cavity of the internally threaded tube; the turning handle is fixed on the top end of the rotating rod, and the panel of the support plate is fixed to the bottom end surface of the rotating rod.

[0022] The beneficial effect of the above technical solution is that after the clamp is clamped on both sides of the brick, the handle is rotated by the tool to make the rotary rod rotate downward along the internal threaded tube, and the support plate contacts the ground. The continuous rotation of the rotary rod will provide supporting force for the clamp, which can support the clamped brick and make it more convenient to extract the brick.

[0023] Preferably, the number of the blades on each channel steel is two and they are symmetrically arranged along the two sides of the through hole, and the blades are welded and fixed to the side walls of the channel steel. Two blades are fixed on each channel steel to increase the contact area between the blades and the brick side walls, ensuring that there is sufficient contact area and holding force between the clamp and the brick side walls during the clamping process.

[0024] Preferably, a handle is fixed on the top surface of the crossbar, which facilitates the removal of the brick after the clamp clamps the brick.

[0025] Preferably, the thickness of the blade of the knife scraper is not more than 2 mm, and a rubber pad is bonded and fixed to the side of the blade away from the notch of the channel steel to which it is fixed. The thickness of the blade is smaller than the gap between two adjacent brick brackets, which facilitates the insertion of the blade. The rubber pad can play a buffering role to prevent the blade from forming a hard connection with the brick and causing tile collapse.

[0026] It can be seen from the above technical scheme that compared with the prior art, the utility model discloses an extraction clamp for repairing hollow square bricks and PC bricks, which utilizes the blade of a shovel to insert into the gap on both sides of the hollow brick, and provides clamping force through the locking of the screw. The hollow brick is extracted by clamping on both sides, thereby ensuring the integrity of the brick and avoiding the occurrence of tile breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the fixture structure provided by the utility model;

[0029] Figure 2 for Figure 1 A magnified schematic diagram of the middle part;

[0030] Figure 3 for Figure 1 The enlarged schematic diagram of the middle B part;

[0031] Figure 4 A front view of the clamp provided by the utility model;

[0032] Figure 5 for Figure 3 CC section view in;

[0033] Figure 6 This is a side view of the channel steel in Example 2.

[0034] in,

[0035] 1-vertical pole; 2-cross bar; 21-fixed square steel; 22-sliding square steel; 23-locking hole; 3-handle; 4-channel steel; 5-knife shovel; 51-rubber pad; 6-screw; 7-pad; 8-steel blade; 9-top support; 91-internal threaded pipe; 92-rotating rod; 93-turn handle; 94-support plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Embodiment 1:

[0038] See attached Figures 1 to 5 The utility model discloses an extraction fixture for repairing hollow square bricks and PC bricks, which uses the principle of clamping on both sides to extract hollow square bricks, thereby ensuring the integrity of the extracted bricks and avoiding the occurrence of porcelain collapse and damage, including:

[0039] The vertical pole 1 comprises a first vertical pole and a second vertical pole which are symmetrically arranged;

[0040] A cross bar 2, one end of the bottom surface of the cross bar 2 is fixed to the top surface of the first vertical bar, and the other end is hinged to the top of the second vertical bar;

[0041] Channel steel 4, the number of channel steel 4 is two, the bottom wall surfaces of the two channel steels 4 are parallel and the notches are arranged away from each other; the two channel steels 4 and the two uprights 1 are arranged perpendicular to each other, the top walls of the two channel steels 4 are fixed to the bottom end surfaces of the two uprights 1 in a one-to-one correspondence; and through holes are opened in the middle of the side walls;

[0042] A blade 5, one side of which is fixed to the side wall of the channel steel 4, and the blade is exposed from the bottom wall of the channel steel 4;

[0043] The screw rod 6 passes through the through holes of the two channel steels 4 and has two ends exposed outside the notches of the two channel steels 4 , and the two ends of the screw rod 6 can be locked with the two channel steels 4 by nuts.

[0044] When in use, insert the blades of the spatula on both sides of the clamp into the two sides of the hollow bricks, and tighten the nuts at both ends of the screw. During the tightening process, since one of the vertical rods is hinged to the horizontal rod, it will provide sufficient clamping force. Pull the clamp upwards and the clamp will extract the hollow bricks for easy repair (re-paving).

[0045] In this embodiment, the vertical rod 1 and the horizontal rod 2 are both made of square steel.

[0046] In order to further optimize the above technical solution and adjust the clamping spacing of the clamp to adapt to the clamping of bricks of different specifications and sizes, the cross bar 2 includes a fixed square steel 21 and a sliding square steel 22. One end of the bottom surface of the fixed square steel 21 is fixed to the top surface of the first vertical pole; one end of the sliding square steel 22 is slidably connected to the inner cavity of the fixed square steel 21, and the other end is hinged to the top of the second vertical pole.

[0047] In order to further optimize the above technical solution, the sliding square steel is limited to prevent it from sliding along the inner cavity of the fixed square steel during use. The side walls opposite to the fixed square steel 21 and the sliding square steel 22 are provided with a plurality of corresponding locking holes 23, and locking pins are inserted into the locking holes 23.

[0048] In order to further optimize the above technical solution and ensure that the clamp has sufficient clamping force on the brick after the nut of the screw is tightened to ensure that the brick will not fall during extraction, the top of the vertical rod 1 is connected to the end of the sliding square steel 22 away from the fixed square steel 21 through a pin shaft.

[0049] In this embodiment, threads are provided at both ends of the screw rod 6, and a pad 7 is provided on the end surface of the nut and the channel steel 4 opposite to the notch.

[0050] like Figure 1 and 4As shown, the two notches of the channel steel are arranged opposite to each other, and the two ends of the screw rod are exposed outside the notches of the two channel steel rods. When the screw rod is tightened, the nut needs to contact the groove wall of the channel steel. It is inconvenient to use tools in the notch of the channel steel. Therefore, a pad is provided on the end face of the notch of the nut and the channel steel relative to the notch. The pad blocks the notch to facilitate the tightening of the nut and the screw rod. The screw rod, the channel steel and the pad are tightened into one by the nut. At the same time, the second vertical rod is hinged to one end of the horizontal rod, thereby ensuring that the clamp has sufficient clamping force after clamping the brick.

[0051] In order to further optimize the above technical solution and facilitate the lifting of the brick after the clamp is clamped, a top support member 9 is fixed on the plate surface of the backing plate 7 away from the side of the channel steel notch that is in contact with it. The top support member 9 includes an internal threaded tube 91, a rotating rod 92, a turning handle 93 and a supporting plate 94;

[0052] The internal threaded tube 91 is arranged vertically and its outer wall is fixed on the panel of the pad 7. The rod wall of the rotary rod 92 is provided with an external thread, and the rotary rod 92 is threadedly connected to the inner cavity of the internal threaded tube 91; the turning handle 93 is fixed on the top of the rotary rod 93, and the panel of the support plate 94 is fixed to the bottom end surface of the rotary rod 92.

[0053] like Figure 3 As shown, after the clamp is clamped on both sides of the brick and fastened by nuts, the rotary rod is rotated downward, and the rotary rod drives the support plate to move down until the support plate contacts the ground. After the support plate contacts the ground, the rotary rod continues to be rotated, and the tightening force of the rotary rod is converted into the supporting force of the clamp. During the continuous rotation process, the rotary rod will support the whole formed by the brick clamped by the clamp, so that the brick is separated from the ground, and the brick is extracted.

[0054] In order to further optimize the above technical solution and ensure that the clamp has sufficient contact area with the side surface of the brick to provide sufficient friction, there are two scrapers 5 on each channel steel 4 and they are symmetrically arranged along both sides of the through hole, and the scrapers 5 are welded and fixed to the side wall of the channel steel 4.

[0055] In order to further optimize the above technical solution and facilitate the clamp to lift the brick upward after clamping it, a handle 3 is fixed on the top surface of the cross bar 2.

[0056] In this embodiment, the thickness of the blade of the shovel 5 is not more than 2 mm, and a rubber pad 51 is bonded and fixed to the side of the blade away from the notch of the channel steel 4 to which it is fixed. During the paving of square bricks, in order to ensure the aesthetics and construction quality, the gap between two adjacent bricks is usually 2 to 3 mm, and the clamp needs to be inserted into the gap on both sides of the hollow bricks when in use, so the thickness of the blade of the shovel cannot be greater than the width of the gap.

[0057] like Figure 3 As shown, a rubber pad is bonded and fixed on the blade, and the rubber pad contacts the side wall of the brick. During the clamping process of the clamp, the rubber pad can buffer the brick and prevent the brick from breaking during the clamping process.

[0058] Embodiment 2:

[0059] See attached Figure 5 The utility model embodiment discloses an extraction fixture for repairing hollow square bricks and PC bricks, the structure and working principle of which are the same as those of embodiment 1, except that the blade 7 is replaced by a steel blade 8.

[0060] A large bolt hole that is interconnected is opened in the middle of the steel blade 8 and the side wall of the channel steel 4, and multiple small bolt holes that are interconnected are opened around the side wall. The steel blade 8 is connected to the side wall of the channel steel 4 by small bolts, and the screw 6 passes through the large bolt hole. The blade of the steel blade 8 extends out of the bottom surface of the channel steel 4. The length of the steel blade 8 is slightly smaller than the length of the channel steel 4. Two steel blades 8 are inserted into the gaps on both sides of the hollow bricks, and the nuts of the locking screws are used to clamp the bricks for extraction.

[0061] In this embodiment, the steel blade and the channel steel are fixed by bolts. The screw passes through the large bolt holes in the middle of the steel blade and the channel steel. The nuts at both ends of the locking screw can be used to lock the steel blades on both sides of the clamp to provide a supporting force. The length of the steel blade is the same as the length of the channel steel, ensuring that there is sufficient friction between the steel blade and the rotating side end face.

[0062] In order to further optimize the above technical solution, a rubber pad 51 is bonded and fixed to the side of the steel blade 8 away from the notch of the channel steel to which it is fixed.

[0063] In order to further optimize the above technical solution, the lifting piece is fixed on one side of the channel steel notch, and the outer wall of the internal threaded pipe is welded and fixed to the end face of the channel steel notch.

[0064] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An extraction fixture for repairing hollow square bricks and PC bricks, characterized in that: include: A vertical pole (1), the vertical pole (1) comprising a first vertical pole and a second vertical pole which are symmetrically arranged; A cross bar (2), wherein one end of the bottom surface of the cross bar (2) is fixed to the top surface of the first vertical bar, and the other end is hinged to the top of the second vertical bar; Channel steel (4), there are two channel steels (4), the bottom wall surfaces of the two channel steels (4) are parallel and the notches are arranged away from each other; the two channel steels (4) and the two upright poles (1) are arranged perpendicular to each other, the top walls of the two channel steels (4) are fixed to the bottom end surfaces of the two upright poles (1) in a one-to-one correspondence; and through holes are provided in the middle of the side walls; A blade (5), wherein one side of the blade surface of the blade (5) is fixed to the side wall of the channel steel (4), and the blade is exposed from the bottom wall of the channel steel (4); A screw rod (6), wherein the screw rod (6) passes through the through holes of the two channel steels (4) and has two ends exposed at the notches of the two channel steels (4), and the two ends of the screw rod (6) can be locked with the two channel steels (4) by nuts.

2. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 1 is characterized in that: The vertical rod (1) and the horizontal rod (2) are both made of square steel.

3. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 2 is characterized in that: The cross bar (2) comprises a fixed square steel (21) and a sliding square steel (22); one end of the bottom surface of the fixed square steel (21) is fixed to the top surface of the first vertical pole; one end of the sliding square steel (22) is slidably connected to the inner cavity of the fixed square steel (21), and the other end is hinged to the top of the second vertical pole.

4. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 3 is characterized in that: A plurality of mutually corresponding locking holes (23) are provided on the side walls opposite to the fixed square steel (21) and the sliding square steel (22), and locking pins are inserted into the locking holes (23).

5. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 3 is characterized in that: The top end of the vertical rod (1) is connected to an end of the sliding square steel (22) away from the fixed square steel (21) via a pin shaft.

6. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 1 is characterized in that: Both ends of the screw rod (6) are provided with threads, and end surfaces of the nut and the channel steel (4) facing the notch are provided with pads (7).

7. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 6 is characterized in that: A top support member (9) is fixed to the plate surface of the backing plate (7) at a side away from the notch of the channel steel in contact with the backing plate (7), and the top support member (9) comprises an internally threaded tube (91), a rotating rod (92), a turning handle (93) and a supporting plate (94); The internally threaded tube (91) is arranged vertically and its outer wall is fixed on the panel of the pad (7); the rod wall of the rotary rod (92) is provided with an external thread, and the rotary rod (92) is threadedly connected to the inner cavity of the internally threaded tube (91); the turning handle (93) is fixed to the top end of the rotary rod (92), and the panel of the support plate (94) is fixed to the bottom end surface of the rotary rod (92).

8. The extraction fixture for repairing hollow square bricks and PC bricks according to claim 1 is characterized in that: The number of the blades and shovels (5) on each channel steel (4) is two and they are symmetrically arranged along the two sides of the through hole, and the blades and shovels (5) are welded and fixed to the side walls of the channel steel (4).

9. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 1 is characterized in that: A handle (3) is fixed to the top surface of the cross bar (2).

10. The extraction fixture for repairing hollowing of square bricks and PC bricks according to claim 1 is characterized in that: The thickness of the blade of the shovel (5) is not greater than 2 mm, and a rubber pad (51) is bonded and fixed to the side of the blade away from the notch of the channel steel (4) to which it is fixed.

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