A grouting sleeve fixing device

Abstract

The present invention discloses a grouting sleeve fixing device, including a fixing bracket and a fixing clamp, wherein the fixing bracket is composed of a base and a fixing rod, and the middle part of the fixing rod is a magnetic material; the fixing clamp includes a steel bar fixing part, a sleeve fixing part, a first fixing screw, and a second fixing screw; the steel bar fixing part is a hollow cylinder, and a plurality of pairs of threaded holes matching the first fixing screws are arranged on the cylinder wall, and the two first fixing screws passing through each pair of threaded holes are in a straight line; the sleeve fixing part is two L-shaped plates relatively fixed on the outer wall of the steel bar fixing part, and a plurality of pairs of threaded holes matching the second fixing screws are arranged on the vertical plate of the L-shaped plate, and the two second fixing screws passing through each pair of threaded holes are in a straight line; the fixing clamp has two upper and lower ones. The grouting sleeve fixing device of the present invention has a simple structure and is easy to operate. The steel bar position accuracy in the manufactured joint specimen is high, and the test efficiency can be effectively improved, and labor can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a grouting sleeve fixing device. Background Art

[0002] As prefabricated buildings are strongly supported, the proportion of prefabricated buildings in new buildings nationwide is increasing. According to the provisions of the industry standard JGJ 355-2015 "Technical Specifications for the Application of Rebar Sleeve Grouting Connections", before the construction of prefabricated concrete structures, a type inspection report of sleeve grouting materials, steel bars, and grouting sleeves must be provided. The grouting construction team must conduct a process inspection before the formal grouting construction. The type inspection regulations require the formation of 3 offset joints and 9 centering joints. The steel bars in the joint test piece must be inserted into the center of the grouting sleeve, coinciding with or parallel to the center of the grouting sleeve axis. The steel bar insertion depth must not exceed the designed anchoring depth. The 3 offset joints should ensure that the transverse ribs of the steel bars after offsetting are in contact with the sleeve wall.

[0003] Due to the poor construction site environment or the insufficient precision of the laboratory forming device, a series of problems will occur in the production of grouting sleeve connection joint specimens, such as the steel bar insertion depth cannot meet the design requirements, the steel bar insertion depth is greater than the design value and does not meet the test requirements, and the steel bar insertion depth is too small, which will cause the joint pull-out test to fail; the steel bar verticality cannot meet the standard requirements; the steel bar offset degree in the offset joint cannot meet the standard requirements. At present, when making these specimens, the devices that can ensure accuracy are too complicated, the operation is difficult, and the efficiency is very low. The main method is to manually fix the steel bar position with ordinary ropes or wire ties. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a grouting sleeve fixing device with a simple structure and easy operation, so as to improve the accuracy of the steel bar position in the joint specimen, improve the quality of the joint specimen, ensure the accuracy of the inspection, and improve the efficiency of joint production.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A grouting sleeve fixing device comprises a fixing bracket and a fixing clamp, wherein the fixing bracket is composed of a base and a fixing rod, and the middle part of the fixing rod is a magnetic material; the fixing clamp comprises a steel bar fixing part, a sleeve fixing part, a first fixing screw, and a second fixing screw; the steel bar fixing part is a hollow cylinder, and a plurality of pairs of threaded holes matching the first fixing screws are provided on the cylinder wall, and the two first fixing screws passing through each pair of threaded holes are in a straight line; the sleeve fixing part is two L-shaped plates relatively fixed to the outer wall of the steel bar fixing part, and a plurality of pairs of threaded holes matching the second fixing screws are provided on the vertical plate of the L-shaped plate, and the two second fixing screws passing through each pair of threaded holes are in a straight line; the fixing clamp comprises two upper and lower parts.

[0007] Preferably, the diameter of the magnetic material part in the middle of the fixing rod is twice that of the non-magnetic material parts at both ends, and the length is less than the length of the grouting sleeve. The grouting sleeve is placed on the magnetic material part in the middle of the fixing rod. Since the grouting sleeve is made of metal material, the magnetic material can easily and reliably adsorb and fix the sleeve.

[0008] Preferably, the inner diameter of the hollow cylinder of the steel bar fixing part is larger than the diameter of the steel bar and smaller than the inner diameter of the grouting sleeve, and the wall thickness of the hollow cylinder is 20 to 40 mm.

[0009] Optionally, a level gauge is provided on the top of the steel bar fixing portion, and the fixing clamp is adjusted to be installed horizontally by observing the level gauge.

[0010] Optionally, a plurality of adjustment bolts are provided at the bottom of the steel bar fixing portion, and the distance between the fixing fixture and the grouting sleeve and the insertion depth of the steel bar are controlled by adjusting the bolts.

[0011] Preferably, there are four adjusting bolts.

[0012] Optionally, a laser infrared emission and monitoring device is provided at the bottom of the steel bar fixing portion. The verticality of the steel bar can be adjusted by laser, and the liquid level of the grouting material in the sleeve can be monitored in real time by infrared reflection.

[0013] Preferably, there are four first fixing screws, all of which are butterfly nuts for easy installation.

[0014] Preferably, there are four second fixing screws, all of which are butterfly nuts for easy installation.

[0015] Preferably, the first fixing screw and the second fixing screw are both provided with size scales. By adjusting the first fixing screw and the second fixing screw, the centering or offset position of the steel bar can be adjusted.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The grouting sleeve fixing device of the present invention has a simple structure and is easy to operate. The steel bar position in the manufactured joint specimen is highly accurate, which can effectively improve the test efficiency and save labor.

[0018] (2) In the grouting sleeve fixing device of the present invention, the middle of the fixing rod is made of magnetic material. Since the grouting sleeve is made of metal material, the magnetic material can easily and reliably adsorb and fix the sleeve; the diameter of the magnetic material part is larger than the non-magnetic material parts at both ends, which is convenient for adjusting the position of the fixing fixture.

[0019] (3) The grouting sleeve fixing device of the present invention is provided with a laser infrared emission and monitoring device at the bottom of the steel bar fixing part, which can ensure the verticality and offset of the steel bar through the laser, and the grouting liquid level can be monitored in real time through the infrared monitoring device. If leakage occurs, it can be discovered in time to ensure the quality of the steel bar sleeve grouting connection joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the fixed bracket structure.

[0021] Figure 2 Schematic diagram of the fixing fixture structure.

[0022] Figure 3 It is a schematic diagram of the working state of the present invention.

[0023] Figure markings: 1-base, 2-fixing rod, 3-rebar fixing part, 4-sleeve fixing part, 5-first fixing screw, 6-second fixing screw, 7-level, 8-adjusting bolt, 9-laser infrared emission and monitoring device, 10-grouting sleeve, 11-rebar. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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 work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Example 1

[0027] A grouting sleeve fixing device comprises a fixing bracket and a fixing fixture, wherein the fixing bracket is composed of a base 1 and a fixing rod 2. Figure 1As shown, the middle part of the fixing rod 2 is made of magnetic material, and the diameter of the magnetic material part is twice that of the non-magnetic material parts at both ends; the fixing fixture includes a steel bar fixing part 3, a sleeve fixing part 4, a first fixing screw 5, and a second fixing screw 6. Figure 2 As shown; the steel bar fixing part 3 is a hollow cylinder, the inner diameter of the hollow cylinder is larger than the diameter of the steel bar and smaller than the inner diameter of the grouting sleeve, the wall thickness of the hollow cylinder is 20-40mm, and two pairs of threaded holes matching the first fixing screws 5 are provided on the wall of the hollow cylinder, and the two first fixing screws 5 passing through each pair of threaded holes are in a straight line; a level 7 is provided on the top of the steel bar fixing part 3; four adjustment bolts 8 are provided at the bottom of the steel bar fixing part 3; the sleeve fixing part 4 is two L-shaped plates relatively fixed to the outer wall of the steel bar fixing part 3, and two pairs of threaded holes matching the second fixing screws 6 are provided on the vertical plate of the L-shaped plate, and the two second fixing screws 6 passing through each pair of threaded holes are in a straight line; the first fixing screw 5 and the second fixing screw 6 are both butterfly nuts for easy installation, and size scales are provided on the screw rods; the fixing fixture includes two upper and lower parts, and a laser infrared emission and monitoring device 9 is provided at the bottom of the steel bar fixing part of the upper fixing fixture.

[0028] The working principle of the embodiment of the present invention is:

[0029] like Figure 3 As shown, the grouting sleeve 10 is fixed on the fixed bracket, and a mark line is made on the steel bar 11 according to the designed insertion depth. The installation position of the fixing fixture is preliminarily determined by the second fixing screw 6 and the steel bar insertion depth is determined. The mark line is observed, and the steel bar 11 is fixed by the first fixing screw 5. The insertion depth and horizontality of the steel bar 11 are accurately controlled by adjusting the bolt 8 according to the level meter 7, and the verticality of the steel bar 11 is adjusted by the laser emitted by the laser infrared emission and monitoring device 9. After the steel bar 11 is fixed, grouting is performed from the grouting sleeve 10 discharge port, and the grouting port is sealed with a rubber plug. When the sleeve grouting material liquid level is 2mm higher than the upper edge of the grouting sleeve 10, the grouting is stopped, and the grouting port is sealed with a rubber plug. The laser infrared emission and monitoring device 9 monitors the sleeve grouting material liquid level in real time. When the liquid level drops by more than 5mm, the monitoring device issues an alarm, and the leak should be plugged in time and grouting should be performed.

[0030] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by technicians in this technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A grouting sleeve fixing device, characterized in that: It includes a fixing bracket and a fixing clamp, the fixing bracket is composed of a base and a fixing rod, the middle part of the fixing rod is a magnetic material, the diameter of the magnetic material part in the middle of the fixing rod is twice that of the non-magnetic material parts at both ends, and the length is less than the length of the grouting sleeve; the fixing clamp includes a steel bar fixing part, a sleeve fixing part, a first fixing screw, and a second fixing screw; the steel bar fixing part is a hollow cylinder, and a plurality of pairs of threaded holes matching the first fixing screws are provided on the cylinder wall, and the two first fixing screws passing through each pair of threaded holes are in a straight line; a plurality of adjustment bolts are provided at the bottom of the steel bar fixing part; the sleeve fixing part is two L-shaped plates relatively fixed to the outer wall of the steel bar fixing part, and a plurality of pairs of threaded holes matching the second fixing screws are provided on the vertical plate of the L-shaped plate, and the two second fixing screws passing through each pair of threaded holes are in a straight line; the fixing clamp includes two upper and lower parts.

2. The grouting sleeve fixing device according to claim 1, characterized in that: The inner diameter of the hollow cylinder of the steel bar fixing part is larger than the diameter of the steel bar and smaller than the inner diameter of the grouting sleeve, and the wall thickness of the hollow cylinder is 20-40 mm.

3. The grouting sleeve fixing device according to claim 1, characterized in that: A level is arranged on the top of the steel bar fixing portion.

4. The grouting sleeve fixing device according to claim 1, characterized in that: There are 4 adjusting bolts.

5. The grouting sleeve fixing device according to claim 1, characterized in that: A laser infrared emission and monitoring device is arranged at the bottom of the steel bar fixing part.

6. The grouting sleeve fixing device according to claim 1, characterized in that: There are four first fixing screws.

7. The grouting sleeve fixing device according to claim 1, characterized in that: There are four second fixing screws.

8. The grouting sleeve fixing device according to claim 1, characterized in that: The first fixing screw and the second fixing screw are both provided with size scales.

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