High-pressure glue injection device for elastomer expansion joint material

Abstract

The utility model relates to expansion joint glue injection device technical field, concretely is a kind of high-pressure glue injection device for elastomer expansion joint material.The device includes base, high-pressure injection cylinder being set on base, filling mechanism for conveying glue to high-pressure injection cylinder, piston is slidably arranged on the inner side wall of high-pressure injection cylinder, driving mechanism for driving the linear sliding of high-pressure injection cylinder is set on the base;High-pressure injection cylinder is connected with the tail end of conveying long tube, and the first valve is set in the head end of conveying long tube.The characteristics of the device are that by pushing piston, great pressure is applied to the glue in high-pressure injection cylinder, so that the glue overcomes its own gravity and viscosity, and is injected into the use position after climbing a large difference.The device has simple structure, can quickly realize the purpose of pouring elastomer material directly from under bridge to bridge joint, and meets construction demand.

Description

Technical Field

[0001] This utility model relates to the technical field of expansion joint glue injection devices, specifically a high-pressure glue injection device for elastomeric expansion joint materials. Background Technology

[0002] High-speed railway bridges constitute a significant portion of my country's total railway mileage. Elastomer expansion joints are installed at bridge joints for overall waterproofing, playing a crucial role in the effectiveness of the waterproofing system and the durability of the structure. The construction process for elastomeric expansion joints in railway concrete bridges involves pouring liquid elastomeric expansion joint material into the bridge joints. After curing, the formed elastomeric material deforms to accommodate the expansion and contraction of the beam ends. However, during actual installation, due to numerous on-site construction projects and teams, and frequent overlapping construction, the installed elastomeric expansion joints are sometimes damaged. Furthermore, since the elastomeric expansion joints are bonded to the water-retaining platforms at the beam ends, damage to some of the platform base surfaces also reduces the effectiveness of the waterproofing. Additionally, older rubber strip expansion joints often require replacement after reaching the end of their service life. These situations necessitate the replacement and repair of the bridge's elastomeric expansion joints.

[0003] The mixing of elastomer materials requires multiple processes, including heating, degassing, metering, and mixing, using large casting machines, as well as a considerable preparation time to achieve optimal performance. However, railway line maintenance and repair typically take place between midnight and 4 AM, during periods of suspended operation. After deducting time for bridge access and necessary safety checks, the remaining construction time is even shorter. Furthermore, the distance between the bridge deck and the ground varies from a few meters to tens of meters, and large machinery cannot be carried onto the bridge. Therefore, there is a particular need for equipment that can directly pour elastomer materials from under the bridge onto the bridge deck joints.

[0004] Chinese patent CN202322379706.0 discloses "CN220908306U: A Channel Expansion Joint Injector," which describes a guide assembly on the surface of an injection device. The guide assembly includes a mounting plate fixedly connected to the surface of the glue gun, a rectangular plate symmetrically fixedly connected to the surface of the mounting plate, and a cylindrical block slidably connected to a groove on the upper surface of the rectangular plate. The rectangular plate has a recessed groove on its surface. However, this device has some drawbacks: it cannot directly inject elastomeric material from under the bridge into the bridge deck joint. Utility Model Content

[0005] To address the problems of the prior art, this invention provides a high-pressure injection device for elastomer expansion joint materials, which can deliver elastomer liquid material from under the bridge deck to the bridge deck joint with a high drop, thereby achieving the purpose of replacing the elastomer expansion joints of railway bridges on operating lines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure injection device for elastomeric expansion joint materials, comprising a base, a high-pressure injection cylinder mounted on the base, and a filling mechanism for conveying adhesive into the high-pressure injection cylinder. A piston is slidably mounted on the inner wall of the high-pressure injection cylinder, and a driving mechanism for driving the high-pressure injection cylinder to slide linearly is mounted on the base. The high-pressure injection cylinder is connected to the tail end of a long conveying pipe, and a first valve is mounted at the head end of the long conveying pipe.

[0007] The above structural design enables the delivery of elastomeric liquid material from under the bridge deck to the bridge deck joints with high elevation differences, thereby achieving the goal of replacing the elastomeric expansion joints of railway bridges on operating lines.

[0008] Preferably, the drive mechanism includes a screw rotatably connected to the piston, a geared motor driven by the screw, and a slide assembly matching the high-pressure injection cylinder. The screw passes through the cylinder wall of the high-pressure injection cylinder by threads, and a reinforcing post is threaded onto the screw. The reinforcing post is fixedly connected to the cylinder wall of the high-pressure injection cylinder, and the geared motor is fixedly connected to the base.

[0009] With the above structural design, the high-pressure injection cylinder moves to the right, and the piston then squeezes the rubber material on the left side of the piston, thereby pumping the rubber material into the long conveying pipe, which is more convenient.

[0010] Preferably, a rotating block is fixedly connected to the head end of the screw, and a matching fixing post is sleeved on the rotating block, the fixing post being fixedly connected to the piston.

[0011] The above structural design prevents the screw from detaching from the piston.

[0012] Preferably, the rotating block is hemispherical or cylindrical.

[0013] The above structural design prevents the screw from detaching from the piston while reducing the friction between the rotating block and the fixed column.

[0014] Preferably, the tail end of the screw is unthreaded, and the tail end of the screw is fixedly connected to a chuck. The chuck is rotatably connected to a matching support column, and the support column is fixedly connected to the base.

[0015] The above structural design supports and fixes the screw, preventing it from moving.

[0016] Preferably, the chute assembly includes multiple support frames fixedly connected to the base, rollers rotatably connected to the support frames, and sliding rods fixedly connected to the outer wall of the high-pressure injection cylinder. The outer wall of the rollers contacts the cylinder wall of the high-pressure injection cylinder, and grooves matching the sliding rods are formed on each support frame.

[0017] The above structural design greatly reduces the frictional force when the high-pressure injection cylinder slides.

[0018] Preferably, the filling mechanism includes a filling tube fixedly connected to the high-pressure injection cylinder, a second valve disposed on the filling tube, and a funnel fixedly connected to the filling tube. The high-pressure injection cylinder is fixedly connected to an exhaust pipe, and an exhaust valve is disposed on the exhaust pipe.

[0019] With the above structural design, when replenishing the rubber compound, the exhaust valve is opened to facilitate the replenishment of rubber compound into the high-pressure injection cylinder.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The key feature of this device is that it applies strong pressure to the rubber compound in the high-pressure injection cylinder by pushing a piston, causing the compound to overcome its own weight and viscosity, rise a significant distance, and be injected into the application location. The device has a simple structure and can quickly achieve the goal of directly pouring elastomer material from under the bridge to the bridge deck joints, meeting construction requirements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention from the left view;

[0024] Figure 3 This is an enlarged structural schematic diagram of the piston of this utility model; Detailed Implementation

[0025] Please see Figure 1 , Figure 2 , Figure 3 This utility model provides a technical solution: a high-pressure injection device for elastomeric expansion joint materials, including a base 1, a high-pressure injection cylinder 2 disposed on the base 1, and a filling mechanism for conveying adhesive into the high-pressure injection cylinder 2. A piston 3 is slidably disposed on the inner side wall of the high-pressure injection cylinder 2, and a driving mechanism for driving the high-pressure injection cylinder 2 to slide linearly is disposed on the base 1. The high-pressure injection cylinder 2 is connected to the tail end of a long conveying pipe 4, and a first valve 41 is disposed at the head end of the long conveying pipe 4.

[0026] The right end of the first valve 41 is fixedly connected to the beginning end of the conveying pipe 4, and the left end of the first valve 41 is fixedly connected to the dispensing nozzle 49.

[0027] The high-pressure injection cylinder 2 is a cylinder made of high-strength metal material, and both ends are welded together with high-strength metal caps. Inside the high-pressure injection cylinder 2 is a piston 3 with good sealing effect and high strength. The main body of the piston 3 is made of metal, and rubber is fixedly connected to the piston 3 to ensure both sealing effect and piston movement in the injection cylinder.

[0028] The drive mechanism includes a screw 51 rotatably connected to the piston 3, a reduction motor 52 driven by the screw 51, and a sliding groove assembly matching the high-pressure injection cylinder 2. The axial direction of the screw 51 is parallel to the axial direction of the high-pressure injection cylinder 2, and coincides with the axial direction of the high-pressure injection cylinder 2. The screw 51 passes through the cylinder wall of the high-pressure injection cylinder 2 by threads. The screw 51 is inserted into the injection cylinder through a matching threaded structure at the right end of the high-pressure injection cylinder 2. A reinforcing post 53 is threadedly sleeved on the screw 51. The reinforcing post 53 is fixedly connected to the cylinder wall of the high-pressure injection cylinder 2. The reduction motor 52 is fixedly connected to the base 1.

[0029] The geared motor 52 consists of a drive motor 59 and a reducer 58. The drive motor 59 and the reducer 58 are connected in a transmission manner. The reducer 58 is fixedly connected to the screw 51 through a coupling. The drive motor 59 and the reducer 58 are fixed on the base 1.

[0030] The first end of the screw 51 is fixedly connected to the rotating block 61, and a matching fixing post 62 is sleeved on the rotating block 61. The fixing post 62 is fixedly connected to the piston 3.

[0031] The rotating block 61 is hemispherical or cylindrical.

[0032] The tail end of the screw 51 is unthreaded and is fixedly connected to the chuck 69. The chuck is rotatably connected to a matching support column 68, which is fixedly connected to the base 1.

[0033] The chute assembly includes multiple support frames 71 fixedly connected to the base 1, rollers 72 rotatably connected to the support frames 71, and sliding rods 73 fixedly connected to the outer wall of the high-pressure injection cylinder 2. The outer wall of the rollers 72 is in contact with the cylinder wall of the high-pressure injection cylinder 2. Each support frame 71 has a groove that matches the sliding rod 73.

[0034] Rollers 72 are used to support the high-pressure injection cylinder 2. Three sets of rollers 72 are provided, and each roller 72 is tangent to the outer wall of the high-pressure injection cylinder 2.

[0035] The filling mechanism includes a filling pipe 81 fixedly connected to the high-pressure injection cylinder 2, a second valve 82 disposed on the filling pipe 81, and a funnel 83 fixedly connected to the filling pipe 81. The high-pressure injection cylinder 2 is fixedly connected to an exhaust pipe 85, and an exhaust valve 84 is disposed on the exhaust pipe 85. The filling pipe 81 and the exhaust pipe 85 are located on the top left side of the high-pressure injection cylinder 2.

[0036] Working principle: The operator first opens the exhaust valve 84 and the second valve 82, and adds adhesive to the high-pressure injection cylinder 2 through the funnel 83. Then, the operator closes the second valve 82 and starts the reduction motor 52. The screw 51, which is connected to the reduction motor 52, rotates, and the high-pressure injection cylinder 2, which is threaded to the screw 51, moves slowly to the right. The piston 3 then squeezes the adhesive on its left side. At this time, the air in the high-pressure injection cylinder 2 will be discharged through the exhaust pipe 85. When adhesive is found to overflow from the exhaust pipe 85, the exhaust valve 84 is closed and the first valve 41 is opened. At this time, the adhesive is squeezed and discharged from the dispensing nozzle 49 through the conveying pipe 4, thereby achieving the purpose of directly pouring the adhesive from under the bridge to the joint of the bridge deck.

[0037] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the scope of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this utility model's implementation.

[0038] The present invention has been described above with reference to preferred embodiments, but the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various modifications can be made to the present invention, and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A high-pressure adhesive injection device for elastomer expansion joint material, comprising a base (1), a high-pressure injection cylinder (2) disposed on the base (1), and a filling mechanism for conveying adhesive into the high-pressure injection cylinder (2), characterized in that: A piston (3) is slidably disposed on the inner side wall of the high-pressure injection cylinder (2), and a driving mechanism for driving the high-pressure injection cylinder (2) to slide linearly is disposed on the base (1); the high-pressure injection cylinder (2) is connected to the tail end of the conveying long pipe (4), and a first valve (41) is disposed at the head end of the conveying long pipe (4).

2. The high-pressure adhesive injection device for elastomeric expansion joint material according to claim 1, characterized in that: The drive mechanism includes a screw (51) rotatably connected to the piston (3), a geared motor (52) driven by the screw (51), and a groove assembly matching the high-pressure injection cylinder (2). The screw (51) passes through the cylinder wall of the high-pressure injection cylinder (2) by threads. A reinforcing column (53) is threaded onto the screw (51). The reinforcing column (53) is fixedly connected to the cylinder wall of the high-pressure injection cylinder (2). The geared motor (52) is fixedly connected to the base (1).

3. The high-pressure adhesive injection device for an elastomer expansion joint material according to claim 2, characterized in that: The screw (51) is fixedly connected to a rotating block (61) at its head end. A matching fixing post (62) is fitted on the rotating block (61). The fixing post (62) is fixedly connected to the piston (3).

4. The high-pressure adhesive injection device for elastomeric expansion joint material according to claim 3, characterized in that: The rotating block (61) is hemispherical or cylindrical.

5. The high-pressure adhesive injection device for an elastomer expansion joint material according to claim 2, characterized in that: The tail end of the screw (51) is unthreaded and is fixedly connected to a chuck (69). The chuck is rotatably connected to a matching support column (68) and the support column (68) is fixedly connected to the base (1).

6. The high-pressure adhesive injection device for elastomeric expansion joint material according to claim 2, characterized in that: The chute assembly includes multiple support frames (71) fixedly connected to the base (1), rollers (72) rotatably connected to the support frames (71), and sliding rods (73) fixedly connected to the outer wall of the high-pressure injection cylinder (2). The outer wall of the rollers (72) is in contact with the cylinder wall of the high-pressure injection cylinder (2). The support frames (71) are all provided with grooves that match the sliding rods (73).

7. A high-pressure adhesive injection device for an elastomer expansion joint material according to any one of claims 1 to 6, characterized in that: The filling mechanism includes a filling tube (81) fixedly connected to the high-pressure injection cylinder (2), a second valve (82) provided on the filling tube (81), and a funnel (83) fixedly connected to the filling tube (81). The high-pressure injection cylinder (2) is fixedly connected to an exhaust pipe (85), and an exhaust valve (84) is provided on the exhaust pipe (85).

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