Grouting equipment for connection of steel bar sleeve of fabricated bridge

Abstract

The utility model relates to the technical field of grouting equipment, in particular to grouting equipment for connection of an assembly type bridge reinforcing steel bar sleeve. Comprising an air compressor, a grouting pressure tank, an exhaust device and a grouting assembly, the grouting pressure tank is installed on one side of the air compressor, and the grouting pressure tank is used for being matched with the air compressor to evenly convey prepared slurry into the grouting assembly; the exhaust device is used for exhausting gas in the grouting pressure tank out of the grouting pressure tank; and the grouting assembly is mounted on one side of the grouting pressure tank and used for uniformly flushing the exhausted mortar into the grouting sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to grouting equipment technical field, concretely relates to a kind of grouting equipment for assembly type bridge reinforcing steel sleeve connection. BACKGROUND

[0002] Reinforcing steel sleeve connection grouting is a technical means for realizing reliable connection of reinforcing steel. Special grouting material (usually composed of cement, fine aggregate, mineral admixture and various additives, etc. mixed in a certain proportion, with high fluidity, early strength, high strength and good volume stability) is poured into the pre-installed reinforcing steel sleeve, filling the gap between the sleeve and the reinforcing steel. With the coagulation and hardening of grouting material, it tightly engages with reinforcing steel and sleeve, and firmly connects two reinforcing steels together through the adhesive force and friction force between materials, ensuring that the connection part can effectively transmit the stress of reinforcing steel, meeting the overall stress performance requirements of structure, and being widely used in building construction such as prefabricated concrete structure;

[0003] However, the existing grouting equipment usually first pours the prepared grout into the tank, then uses an air compressor to pour high-pressure gas into the tank, and then pushes the grout into the sleeve through the high-pressure gas to complete the grouting work. This method will also pour air into the grout, which will produce air bubbles in the grout, thereby reducing the grouting effect.

[0004] Therefore, the utility model provides a kind of grouting equipment for assembly type bridge reinforcing steel sleeve connection to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the existing grouting equipment usually first pours the prepared grout into the tank, then uses an air compressor to pour high-pressure gas into the tank, and then pushes the grout into the sleeve through the high-pressure gas to complete the grouting work. This method will also pour air into the grout, which will produce air bubbles in the grout, thereby reducing the grouting effect.

[0006] The utility model provides the following technical scheme: a kind of grouting equipment for assembly type bridge reinforcing steel sleeve connection, including air compressor, grouting pressure tank, exhaust device and grouting assembly, grouting pressure tank is installed on the side of air compressor, grouting pressure tank is used to be cooperated with air compressor and be sent to grouting assembly with the grout of configuration even;The exhaust device is used to exhaust the gas in grouting pressure tank from grouting pressure tank;Grouting assembly is installed on the side of grouting pressure tank, and grouting assembly is used to pour the mortar after exhaust into grouting sleeve even.

[0007] Preferably, the grouting pressure tank comprises a tank body, a sealing cover, inflation holes, a pressing cover, a telescopic fixing cylinder, a reset spring and a discharge hole, the tank body is installed on one side of the air compressor, the sealing cover is installed above the tank body, two inflation holes are formed in the sealing cover, the pressing cover is installed in the tank body, the telescopic fixing cylinder is installed on the pressing cover, the telescopic fixing cylinder is fixed on the sealing cover, the reset spring is installed in the telescopic fixing cylinder, and the discharge hole is installed at the bottom of the tank body.

[0008] Preferably, the pressing cover is provided with an air outlet hole, and the air outlet hole is provided with an electric valve.

[0009] Preferably, the sealing cover is provided with a pressure gauge.

[0010] Preferably, the exhaust device comprises a fixing sleeve, an ultrasonic vibrator, exhaust pipes and sealing plugs, the fixing sleeve is installed on one side of the tank body, the ultrasonic vibrator is installed on the fixing sleeve, two exhaust pipes are symmetrically formed in the tank body, and the sealing plugs are detachably installed on the exhaust pipes.

[0011] Preferably, the exhaust pipe is provided with a one-way valve.

[0012] Preferably, the grouting assembly comprises a grouting pipe and a grouting plug, the grouting pipe is sealingly installed on the discharge hole, and the grouting plug is installed on one side of the grouting pipe.

[0013] The beneficial effects of the present application are as follows:

[0014] 1. The new grouting pressure tank and the exhaust device are provided, the exhaust device is opened after the slurry is filled into the tank body, the ultrasonic vibrator drives the slurry in the tank body to vibrate, the gas in the slurry is discharged, the gas is discharged through the exhaust pipe by the extrusion of the pressing cover, and the gas bubbles in the slurry are removed, so that the grouting effect is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a whole schematic view of the present application;

[0017] Figure 2 It is a schematic view of the pressure gauge installation position of the present application;

[0018] Figure 3 Figure 2 is a schematic view of the inside of the tank body of the present application;

[0019] Figure 4 Figure 3 is a schematic view of the inside of the telescopic fixing cylinder of the present application;

[0020] Figure 5 Figure 4 is an enlarged schematic view of point A of the present application;

[0021] Figure 6 Figure 5 is a schematic view of the squeeze cap of the present application;

[0022] Figure 7 Figure 6 is a schematic view of the installation of the one-way valve of the present application.

[0023] In the figure: 1, grouting pressure tank; 11, tank body; 12, sealing cover; 121, pressure gauge; 13, inflation hole; 14, squeeze cap; 141, air outlet hole; 142, electric valve; 15, telescopic fixing cylinder; 16, return spring; 17, discharge hole; 2, exhaust device; 21, fixed sleeve; 22, ultrasonic vibrator; 23, exhaust pipe; 24, sealing plug; 25, one-way valve; 3, grouting assembly; 31, grouting pipe; 32, grouting plug. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external", "back" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or it is the orientation or position relation of the usual placement when using the product of the application. These terms are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0027] It also needs to be explained that, in the description of the utility model, unless otherwise expressly specified and limited, the terms "set", "install", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] The embodiment of the present disclosure aims to solve the problem that the existing grouting equipment usually first pours the prepared slurry into the tank, then uses an air compressor to pour high-pressure gas into the tank, and then pushes the slurry into the sleeve through the high-pressure gas to complete the grouting work. Using this way will flush the air into the slurry, and then produce bubbles in the slurry, thereby reducing the grouting effect. In view of this, the embodiment of the present disclosure proposes a prefabricated bridge reinforcement sleeve connection grouting equipment, by setting a new grouting pressure tank and an exhaust device, first open the exhaust device after the slurry is filled into the tank, that is, the vibration of the ultrasonic vibrator drives the slurry in the tank to vibrate, and then the gas in the slurry is discharged, and at the same time, the extrusion of the extrusion cover extrudes the gas through the exhaust pipe, thereby realizing no bubbles in the slurry and ensuring the grouting effect.

[0029] As shown in Figures 1 to 7 A prefabricated bridge reinforcement sleeve connection grouting equipment, comprising an air compressor, a grouting pressure tank 1, an exhaust device 2 and a grouting assembly 3, the air compressor is provided with a grouting pressure tank 1 on one side, the grouting pressure tank 1 is used for uniformly conveying the prepared slurry into the grouting assembly 3 in cooperation with the air compressor; the exhaust device 2 is used for discharging the gas in the grouting pressure tank 1 from the grouting pressure tank 1; the grouting assembly 3 is installed on one side of the grouting pressure tank 1, and the grouting assembly 3 is used for uniformly flushing the mortar after exhaust into the grouting sleeve;

[0030] By setting the new grouting pressure tank 1 and exhaust device 2, first in the slurry into the tank 11 inside after opening the exhaust device 2, that is, by ultrasonic vibrator 22 vibration drive tank 11 in the slurry vibration, and then the gas in the slurry is discharged, at the same time with the extrusion cover 14 extrusion through the exhaust pipe 23 gas discharge, and then realized the slurry without air bubbles, ensure the grouting effect;

[0031] At the same time the slurry is composed of cement 30%~50%

[0032] Admixture 6%~20%

[0033] Sand 40%~55% (sand for 20-120 mesh graded quartz sand)

[0034] Defoaming agent 0.05%-0.5%

[0035] Water reducing agent 0.2%-1.0%

[0036] Expanding agent 0.005%~0.05%

[0037] Early strength agent 0.1%~1.0%

[0038] Antifreeze 0.2%~2.0%; wherein:

[0039] The cement is 52.5 Portland cement and aluminate cement CA-50 according to the mass ratio of (80-95):(5-20);

[0040] The admixture is microbead, silica fume, and mineral powder according to the mass ratio of (20-60):(20-60):(20-60);

[0041] The defoaming agent is one or both of silicone defoaming agent and polyether defoaming agent;

[0042] The water reducing agent is a polycarboxylic acid comb polymer, and the form is powder or granular;

[0043] The expanding agent is a plastic expanding agent;

[0044] The early strength agent is a powder nanometer scale calcium silicate sol;

[0045] The antifreeze is calcium nitrite, or composite sodium nitrite;

[0046] Meanwhile, the preparation process of the grouting material is as follows: taking 52.5 Portland cement composite aluminates CA-50 cement as the main component, composite microbeads, silica fume and mineral powder are used for cement modification, the composite cementitious material can play the role of grading filling and continuous hydration, and high strength and low porosity can be obtained; EPEG is selected as the macromonomer of the polycarboxylate comb polymer for dispersion, the acid-ether ratio of the polymer is high, the dispersion speed is fast, especially the dispersion efficiency is high in low temperature environment, which can meet the control of the initial state of the grouting material; the defoaming agent is added to control the pore structure of the hardened grouting material; the volume stability of the grouting material is controlled by the hydration reaction process of the plastic expansion agent combined with the cementitious material; the addition of the antifreeze agent nitrite can reduce the freezing point of free water in the slurry; the addition of nanometer size hydrated calcium silicate promotes the hydration reaction of Portland cement at low temperature, and the product of the reaction of aluminates and calcium nitrite can react again after the invasion of chloride ions to generate Cl-AFm or Cl-Aft, which can solidify Cl-, finally, the low-temperature high-performance grouting material for the assembly type bridge steel sleeve connection with large flow, low-temperature early strength and rust prevention function is obtained, and then the grouting is carried out by using the above grouting device.

[0047] As shown in Figures 1 to 6 The grouting pressure tank 1 includes a tank body 11, a sealing cover 12, an inflation hole 13, a extrusion cover 14, a telescopic fixing cylinder 15, a reset spring 16 and a discharge hole 17, the tank body 11 is installed on the side of the air compressor, and the tank body 11 is used for placing the slurry; the sealing cover 12 is installed above the tank body 11, and the sealing cover 12 is used for sealing the tank body 11; two inflation holes 13 are formed in the sealing cover 12, the inflation holes 13 are used for inserting the pipeline of the air compressor to flush high-pressure air into the tank body 11; the extrusion cover 14 is installed in the tank body 11, and the extrusion cover 14 is used for extruding the slurry to enter the grouting assembly 3 for grouting after the high-pressure gas is flushed in; the telescopic fixing cylinder 15 is installed on the extrusion cover 14, and the telescopic fixing cylinder 15 is used for extending when the extrusion cover 14 moves and resetting when the extrusion cover 14 is not extruded; the telescopic fixing cylinder 15 is fixed on the sealing cover 12, and the reset spring 16 is installed in the telescopic fixing cylinder 15 of the extrusion cover 14, and the reset spring 16 is used for installing the discharge hole 17 at the bottom of the tank body 11;

[0048] When working, the staff will pour the slurry into the tank 11, and after the slurry is poured in, the extrusion cover 14 is inserted into the tank 11, and the sealing cover 12 is sealed above the tank 11, at this time the air compressor is opened to start charging between the sealing cover 12 and the extrusion cover 14 through the charging hole 13, at this time the extrusion cover 14 moves downward under the action of air pressure, and then the extruded slurry makes the slurry enter the discharge hole 17 to complete the discharge, after the extrusion cover 14 enters the bottom, at this time the slurry in the tank 11 is all extruded into the discharge hole 17, at this time the air compressor stops working, and the delivery of the slurry is completed;

[0049] The grouting pressure tank 1 can realize uniform extrusion of the slurry, avoid direct contact between compressed air and the slurry, and realize uniform discharge effect, and the design of the telescopic fixing cylinder 15 ensures that the extrusion cover 14 can realize stable extrusion effect during forward movement, that is, the extrusion cover 14 can move forward uniformly through extrusion of compressed air, and no air bubbles are generated in the slurry, and the grouting effect is ensured.

[0050] As shown in Figure 6 The extrusion cover 14 is provided with an air outlet hole 141 for making compressed air flow from the air outlet hole 141 to the discharge hole 17 to complete extrusion of the slurry in the discharge pipe, and the air outlet hole 141 is provided with an electric valve 142 for controlling opening and closing of the air outlet hole 141; after the extrusion cover 14 moves to the limit position, the remaining material in the discharge pipe needs to be extruded out and recharged by compressed gas, so the design of the air outlet hole 141 and the electric valve 142 can realize opening of the electric valve 142 to make compressed air enter the discharge pipe, and then the remaining material in the discharge pipe is extruded out and recharged.

[0051] As shown in Figure 1 The sealing cover 12 is provided with a pressure gauge 121 for detecting the pressure in the tank 11, avoiding danger caused by excessive pressure in the tank 11, and ensuring normal grouting work.

[0052] As shown in Figures 1 to 2As shown, the exhaust device 2 includes a fixed sleeve 21, an ultrasonic vibrator 22, an exhaust pipe 23 and a sealing plug 24, the fixed sleeve 21 is installed on one side of the tank body 11, and the fixed sleeve 21 is used to fix the exhaust device 2; the ultrasonic vibrator 22 is installed on the fixed sleeve 21, and the ultrasonic vibrator 22 is used to vibrate to exhaust the bubbles in the slurry; two exhaust pipes 23 are symmetrically arranged on the tank body 11, and the exhaust pipes 23 are used to exhaust the gas in the slurry; the sealing plug 24 is detachably installed on the exhaust pipe 23, and the sealing plug 24 is used to seal after the bubbles are exhausted, so as to ensure the stability of the pressure in the tank body 11;

[0053] In work, first, the staff installs the fixed sleeve 21 on the tank body 11, then opens the ultrasonic vibrator 22 to start vibrating, under the action of the ultrasonic vibrator 22, the bubbles in the slurry are exhausted by vibration, the bubbles are exhausted through the exhaust pipe 23, and after the bubbles are exhausted, the exhaust pipe 23 is sealed by the sealing plug 24, so as to ensure the stability of the pressure in the tank body 11; a one-way valve 25 is arranged in the exhaust pipe 23, and the one-way valve 25 is used to avoid the air from the outside entering the tank body 11 to affect the pressure in the tank body 11 or affect the grouting effect.

[0054] After the slurry is filled into the tank body 11, the exhaust device 2 is opened, that is, the vibration of the ultrasonic vibrator 22 drives the slurry in the tank body 11 to vibrate, so as to exhaust the gas in the slurry, and at the same time, the gas is exhausted through the exhaust pipe 23 by the extrusion of the extrusion cover 14, so as to realize that there is no bubble in the slurry and ensure the grouting effect.

[0055] As shown in the Figures 1 to 2 As shown, the grouting assembly 3 includes a grouting pipe 31 and a grouting plug 32, the grouting pipe 31 is sealingly installed on the discharge hole 17, and the grouting pipe 31 is used to transport the slurry; the grouting plug 32 is installed on one side of the grouting pipe 31, and the grouting plug 32 is used to be inserted into the building to complete grouting.

[0056] The overall working process is as follows: the staff pours the slurry into the tank body 11, after the slurry is poured, the extrusion cover 14 is inserted into the tank body 11, and the sealing cover 12 is sealed above the tank body 11, at this time, the air compressor is started to charge air between the sealing cover 12 and the extrusion cover 14 through the charging hole 13, at this time, the extrusion cover 14 moves downward under the action of the air pressure, so as to extrude the slurry and make the slurry enter the discharge hole 17 to complete the discharge, after the extrusion cover 14 enters the bottom, the slurry in the tank body 11 is all extruded into the discharge hole 17, at this time, the air compressor stops working, and the grouting is completed.

[0057] The person skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description are only for explaining the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fabricated bridge grouting equipment for reinforcing sleeve connection, comprising an air compressor, characterized in that, Also include grouting pressure tank (1), exhaust device (2) and grouting assembly (3), the air compressor side is equipped with grouting pressure tank (1) and is connected by pipeline, the grouting pressure tank (1) is used to cooperate with air compressor and is uniformly delivered to grouting assembly (3) in the grouting material prepared;The exhaust device (2) is used to exhaust the gas in the grouting pressure tank (1) in the grouting pressure tank (1);The grouting assembly (3) is installed in the grouting pressure tank (1) side, the grouting assembly (3) is used to flush the mortar after exhaust into the grouting sleeve uniformly.

2. The grouting equipment for the fabricated bridge steel sleeve connection according to claim 1, characterized in that: The grouting pressure tank (1) includes tank body (11), sealing cover (12), inflation hole (13), extrusion cover (14), telescopic fixing cylinder (15), reset spring (16) and discharge hole (17), the tank body (11) is installed in the air compressor side, the tank body (11) is installed with sealing cover (12) on top, two inflation holes (13) are formed in the sealing cover (12), the extrusion cover (14) is installed in the tank body (11), the telescopic fixing cylinder (15) is installed on the extrusion cover (14), the telescopic fixing cylinder (15) is fixed on the sealing cover (12), the reset spring (16) is installed in the telescopic fixing cylinder (15), the discharge hole (17) is installed in the tank body (11) bottom.

3. The grouting equipment for the prefabricated bridge reinforcing sleeve connection according to claim 2, characterized in that: The extrusion cover (14) is provided with a gas outlet (141), and the gas outlet (141) is provided with an electric valve (142).

4. The grouting equipment for the fabricated bridge steel sleeve connection according to claim 3, characterized in that: The sealing cover (12) is provided with a pressure gauge (121).

5. The grouting equipment for the prefabricated bridge reinforcing sleeve connection according to claim 4, characterized in that: The exhaust device (2) includes fixed sleeve (21), ultrasonic vibrator (22), exhaust pipe (23) and sealing plug (24), the fixed sleeve (21) is installed in the tank body (11) side, the fixed sleeve (21) is installed with ultrasonic vibrator (22), two exhaust pipes (23) are symmetrically formed in the tank body (11), the exhaust pipe (23) is detachably provided with sealing plug (24).

6. The grouting equipment for the prefabricated bridge reinforcing sleeve connection according to claim 5, characterized in that: The exhaust pipe (23) is provided with a one-way valve (25).

7. The grouting equipment for the prefabricated bridge reinforcing sleeve connection according to claim 6, characterized in that: The grouting assembly (3) includes grouting pipe (31) and grouting plug (32), the grouting pipe (31) is sealingly installed on the discharge hole (17), and the grouting plug (32) is installed on the grouting pipe (31) side.

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