Fixing device for construction joint end mold and water-stop belt
By combining the template fixing unit and the waterstop fixing unit, the problem of inaccurate positioning and displacement of the waterstop during tunnel lining construction is solved, achieving precise positioning and protection of the waterstop, adapting to lining structures of different thicknesses, and providing a stable waterproofing effect.
Patent Information
- Application Number
- CN202520266868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing embedded rubber waterstops are prone to displacement during tunnel lining construction, making accurate positioning impossible. Furthermore, the end formwork fixed at construction joints can easily cause the waterstops to shift, resulting in poor waterproofing performance.
A fixing device including a template fixing unit and a waterstop fixing unit is designed. The template fixing unit abuts against the top template through the upper fixing component and the lower fixing component. The waterstop fixing unit clamps the waterstop through the upper and lower clamping components. Combined with the threaded adjustment and ball head hinge structure, the waterstop can be accurately positioned and adaptively adjusted.
It ensures that the waterstop and end formwork do not shift during concrete pouring, is suitable for different lining thicknesses, protects the waterstop from damage, has a simple structure, is easy to use, has low cost, and is widely applicable.
Smart Images

Figure CN223767517U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tunnel lining construction technology, and relates to construction joints in tunnel lining, especially a fixing device for the end formwork and waterstop of the construction joint. Background Technology
[0002] During the construction of tunnel lining structures, in order to meet deformation requirements, it is necessary to construct the structure in sections of box girder of different lengths. Embedded rubber waterstops are installed between adjacent box girder sections to waterproof the construction joints or structural joints. However, the following problems exist:
[0003] 1. Existing embedded rubber waterstops are generally installed by fixing with additional steel bars, clamps, lead wires and formwork, etc. However, these methods cannot meet the construction specifications and are prone to displacement during subsequent construction, which cannot ensure the accurate positioning of the embedded rubber waterstop.
[0004] 2. The end formwork is fixedly installed at the construction joint, and the embedded rubber waterstop is clamped between two adjacent end formworks. During subsequent concrete pouring, the end formwork is prone to displacement, which in turn causes the embedded rubber waterstop to shift.
[0005] To address this issue, we propose a fixing device for the end formwork and waterstop at construction joints. Utility Model Content
[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a simple and easy-to-use fixing device for construction joint end molds and waterstops.
[0007] To solve the above problems, the technical solution of this utility model is as follows:
[0008] A fixing device for construction joint end formwork and waterstop, comprising:
[0009] The template fixing unit is fixedly installed at the construction joint. One side of the template fixing unit abuts against the end template of the construction joint, which is suitable for fixing the end template.
[0010] The waterstop fixing unit is movable and installed on the template fixing unit, and is located on the side close to the end template. The waterstop fixing unit is suitable for clamping the waterstop.
[0011] In a further embodiment, the template fixing unit includes an upper fixing component, a lower fixing component, a vertical rod, and a diagonal rod. The upper fixing component and the lower fixing component are fixedly installed on the upper and lower ends of one side of the vertical rod, respectively, and the diagonal rod is fixedly installed on the other side of the vertical rod.
[0012] In a further embodiment, the upper fixing assembly includes an upper top rod, a connecting crossbeam, and an upper main crossbeam. The upper end of the vertical rod is fixedly installed at intervals at one end of the connecting crossbeam and the middle of the upper main crossbeam. The upper top rod is fixedly installed between the ends of the connecting crossbeam and the upper main crossbeam.
[0013] In a further embodiment, the lower fixing assembly includes a lower top rod, a bottom crossbar, and a lower main crossbeam. The lower end of the vertical rod is fixedly installed at intervals between the middle of the bottom crossbar and the lower main crossbeam, and the lower top rod is fixedly installed between the ends of the bottom crossbar and the lower main crossbeam.
[0014] In a further embodiment, the upper main crossbeam, the lower main crossbeam, and the bottom crossbar are all fixedly installed on the diagonal brace.
[0015] In a further embodiment, the top end of the diagonal bar is fixedly mounted on the vertical bar, and the bottom end of the diagonal bar is fixedly mounted on the bottom horizontal bar.
[0016] The bottom crossbar has a fixed mounting and positioning component at its end, which is suitable for fixing the bottom crossbar to the ground.
[0017] In a further embodiment, the waterstop fixing unit includes an upper clamping component and a lower clamping component. The upper clamping component is installed on the upper main crossbeam, and the lower clamping component is installed on the lower main crossbeam. The waterstop is clamped between the upper clamping component and the lower clamping component.
[0018] In a further embodiment, the upper clamping assembly includes an upper adjusting rod and an upper clamping plate. The upper adjusting rod is rotatably mounted on the upper main crossbeam, and the bottom end of the upper adjusting rod is hinged to the clamping plate via an upper ball joint.
[0019] In a further embodiment, the lower clamping assembly includes a lower adjusting rod and a lower clamping plate. The lower adjusting rod is rotatably mounted on the lower main crossbeam, and the top end of the lower adjusting rod is hinged to the lower clamping plate via a lower ball joint.
[0020] In a further embodiment, an upper handle and a lower handle are fixedly installed at the top end of the upper adjusting rod and the bottom end of the lower adjusting rod, respectively;
[0021] The bottom surface of the upper clamping plate and the top surface of the lower clamping plate are fixedly installed with the upper pad and the lower pad, respectively, which is suitable for clamping the waterstop.
[0022] Compared with the prior art, the beneficial effects of this utility model are:
[0023] 1. The template fixing unit of this fixing device includes an upper fixing component and a lower fixing component, which abut against the adjacent end templates respectively; the bottom end of the upper fixing component is movably installed with an upper clamping component, and the top end of the lower fixing component is movably installed with a lower clamping component. An embedded rubber waterstop is clamped between the upper clamping component and the lower clamping component, which can simultaneously position the end template and the embedded rubber waterstop, preventing displacement during subsequent concrete pouring and ensuring accurate installation of the end template and the embedded rubber waterstop.
[0024] 2. The upper adjusting rod of this fixing device is movable and installed on the upper main crossbeam. The bottom end of the upper adjusting rod is hinged to the upper clamping plate. The lower adjusting rod is movable and installed on the lower main crossbeam. The top end of the lower adjusting rod is hinged to the lower clamping plate. The outer surfaces of the upper and lower adjusting rods are threaded, so that the installation height of the upper and lower clamping plates can be adjusted. It can be used for different lining thicknesses, ensuring that the embedded rubber waterstop is positioned in the center within the lining. It has a wide range of applications.
[0025] 3. The upper adjusting rod of this fixing device is hinged to the upper clamping plate via the upper ball joint, and the lower adjusting rod is hinged to the lower clamping plate via the lower ball joint. This allows the upper and lower clamping plates to adaptively adjust the installation height of the embedded rubber waterstop according to different lining thicknesses, while ensuring tight clamping. An upper pad is fixedly installed on the bottom surface of the upper clamping plate, and a lower pad is fixedly installed on the top surface of the lower clamping plate. Both the upper and lower pads are made of flexible materials to avoid damage to the embedded rubber waterstop and to enhance its protection.
[0026] 4. This fixing device has a simple structure, ingenious design, scientific and reasonable design, precise end template positioning, significant installation effect of the embedded rubber waterstop, and is quick and convenient to use; it is compact in size, can be disassembled and reused multiple times, and is easy to transport and store; moreover, all components are commonly used construction parts, requiring no special manufacturing, resulting in low cost and obvious economic benefits. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of a device for fixing the end formwork and waterstop at construction joints.
[0028] In the diagram: 1. Template fixing unit; 11. Upper fixing component; 111. Upper top rod; 112. Connecting crossbeam; 113. Upper main crossbeam; 12. Lower fixing component; 121. Lower top rod; 122. Bottom crossbeam; 123. Lower main crossbeam; 13. Vertical rod; 14. Diagonal rod; 2. Waterstop fixing unit; 21. Upper clamping component; 211. Upper handle; 212. Upper adjusting rod; 213. Upper ball head; 214. Upper clamping plate; 215. Upper pad plate; 22. Lower clamping component; 221. Lower handle; 222. Lower adjusting rod; 223. Lower ball head; 224. Lower clamping plate; 225. Lower pad plate; 3. Positioning component. Detailed Implementation
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] Example 1:
[0031] A fixing device for construction joint end formwork and waterstop, such as Figure 1 As shown, the fixing device is installed at the construction joint or structural joint. The fixing device includes a template fixing unit 1 and a waterstop fixing unit 2. The template fixing unit 1 abuts against the transverse back rib of the end template. The waterstop fixing unit 2 is installed on the template fixing unit 1. The waterstop fixing unit 2 is fitted with an embedded rubber waterstop, which is suitable for fixing the position of the end template and the embedded rubber waterstop at the same time, so as to avoid displacement during subsequent concrete pouring and ensure accurate installation.
[0032] The template fixing unit 1 includes an upper fixing component 11, a lower fixing component 12, a vertical rod 13, and a diagonal rod 14. The upper fixing component 11 and the lower fixing component 12 are fixedly installed on the upper and lower ends of one side of the vertical rod 13, respectively. Both the upper fixing component 11 and the lower fixing component 12 are rectangular structures. The diagonal rod 14, which is inclined, is fixedly installed on the other side of the vertical rod 13, forming a triangular structure that enhances the structural stability of the fixing device. The upper fixing component 11 includes an upper top rod 111, a connecting beam 112, and an upper main beam 113. The connecting beam 112 and the upper main beam 113 are horizontally arranged, while the upper top rod 111 is vertically arranged. One end of the connecting beam 112 is fixedly installed at the top of the vertical rod 13, and the top of the upper top rod 111 is fixedly installed at the other end of the connecting beam 112. One end of the upper main beam 113 is fixedly installed at the bottom of the upper top rod 111. At the end, the other end of the upper main crossbeam 113 is fixedly installed on the diagonal brace 14; the lower fixing assembly 12 includes a lower top rod 121, a bottom crossbeam 122, and a lower main crossbeam 123. The bottom crossbeam 122 and the lower main crossbeam 123 are horizontally arranged, while the lower top rod 121 is vertically arranged. The bottom end of the vertical rod 13 is fixedly installed on the middle part of the bottom crossbeam 122. The bottom end of the diagonal brace 14 is fixedly installed on one end of the bottom crossbeam 122. The bottom end of the lower top rod 121 is fixedly installed on the other end of the bottom crossbeam 122. One end of the lower main crossbeam 123 is fixedly installed on the top part of the lower top rod 121. The other end of the lower main crossbeam 123 is fixedly installed on the diagonal brace 14. A positioning element 3 is fixedly installed on the end of the bottom crossbeam 122. The positioning element 3 is located on the side close to the diagonal brace 14 and is fixedly installed on the ground or base plate structure, suitable for stable installation of the entire fixing device. Preferably, the positioning element 3 is a bolt.
[0033] The waterstop fixing unit 2 includes an upper clamping assembly 21 and a lower clamping assembly 22. An embedded rubber waterstop is clamped between the upper clamping assembly 21 and the lower clamping assembly 22. The upper clamping assembly 21 is installed at the bottom end of the upper fixing assembly 11, and the lower clamping assembly 22 is installed at the top end of the lower fixing assembly 12. The upper clamping assembly 21 includes an upper handle 211, an upper adjusting rod 212, an upper ball head 213, an upper clamping plate 214, and an upper pad 215. The upper adjusting rod 212 is threaded onto the upper main crossbeam 113 via a pair of nuts. The outer surface of component 2 is threaded. An upper handle 211 is fixedly installed at the top of the upper adjusting rod 212. The upper handle 211 is a horizontally arranged rod. The bottom end of the upper adjusting rod 212 is hinged to the top end of the upper clamping plate 214 via an upper ball joint 213. An upper pad 215 is fixedly installed at the bottom end of the upper clamping plate 214. The lower clamping assembly 22 includes a lower handle 221, a lower adjusting rod 222, a lower ball joint 223, a lower clamping plate 224, and a lower pad 225. The lower adjusting rod 222 is threaded onto the lower main crossbeam 123 via a pair of nuts. The outer surface of the lower adjusting rod 222 is threaded. A lower handle 221 is fixedly installed at the bottom end of the lower adjusting rod 222. The lower handle 221 is a horizontally arranged rod. The top end of the lower adjusting rod 222 is hinged to the bottom end of the lower clamping plate 224 via a lower ball joint 223. A lower pad 225 is fixedly installed at the top end of the lower clamping plate 224. Depending on the installation position of the embedded rubber waterstop, turning the upper handle 211 and the lower handle 221 rotates the upper adjusting rod 212 and the lower adjusting rod 222, thereby controlling the raising and lowering of the upper clamping plate 214 and the lower clamping plate 224. The upper pad 215 and the lower pad 225 abut against the top and bottom surfaces of the embedded rubber waterstop, respectively, thereby fixing the installation position of the embedded rubber waterstop. The upper ball head 213 and the lower ball head 223 allow the angles of the upper clamping plate 214 and the lower clamping plate 224 to be adaptively adjusted according to the installation angle of the embedded rubber waterstop. The upper pad 215 and the lower pad 225 are made of flexible materials, such as rubber, which have a certain deformation capacity and can fit tightly against the surface of the embedded rubber waterstop to ensure a firm clamping of the rubber waterstop.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A fixing device for a construction joint end form and a waterstop, characterized in that, The utility model relates to a construction joint template fixing device, including: Template fixing unit (1) is fixedly installed at the construction joint, one side of template fixing unit (1) is abutted on the end template of construction joint, and the end template is suitable for being fixed; Waterstop fixing unit (2) is movably installed on template fixing unit (1) and is located at one side close to the end template, and waterstop fixing unit (2) is suitable for clamping waterstop.
2. The fixing device for construction joint end form and waterstop according to claim 1, characterized in that, Template fixing unit (1) includes upper fixed assembly (11), lower fixed assembly (12), vertical rod (13) and inclined rod (14), and upper fixed assembly (11) and lower fixed assembly (12) are fixedly installed on the upper end and the lower end of one side of vertical rod (13) respectively, and inclined rod (14) is fixedly installed on the other side of vertical rod (13).
3. The fixing device for construction joint end form and waterstop according to claim 2, characterized in that, Upper fixed assembly (11) includes upper jacking rod (111), connecting crossbeam (112) and upper main crossbeam (113), and one end of connecting crossbeam (112) and the middle of upper main crossbeam (113) are fixedly installed on the upper end of vertical rod (13) at intervals, and upper jacking rod (111) is fixedly installed between the ends of connecting crossbeam (112) and upper main crossbeam (113).
4. The fixing device for construction joint end form and waterstop according to claim 3, characterized in that, Lower fixed assembly (12) includes lower jacking rod (121), bottom crossbeam (122) and lower main crossbeam (123), and bottom crossbeam (122) and the middle of lower main crossbeam (123) are fixedly installed on the lower end of vertical rod (13) at intervals, and lower jacking rod (121) is fixedly installed between the ends of bottom crossbeam (122) and lower main crossbeam (123).
5. The fixing device for construction joint end form and waterstop according to claim 4, characterized in that, Upper main crossbeam (113), lower main crossbeam (123) and bottom crossbeam (122) are fixedly installed on inclined rod (14).
6. The fixing device for construction joint end form and waterstop according to claim 5, characterized in that, The top end of inclined rod (14) is fixedly installed on vertical rod (13), and the bottom end of inclined rod (14) is fixedly installed on bottom crossbeam (122); The end of bottom crossbeam (122) is fixedly installed with positioning piece (3), and bottom crossbeam (122) is fixedly installed on the ground.
7. The construction joint end form and flashing securing device of claim 6, wherein, Waterstop fixing unit (2) includes upper clamping assembly (21) and lower clamping assembly (22), upper clamping assembly (21) is installed on upper main crossbeam (113), lower clamping assembly (22) is installed on lower main crossbeam (123), and waterstop is clamped between upper clamping assembly (21) and lower clamping assembly (22).
8. The fixing device for construction joint end form and waterstop according to claim 7, characterized in that, Upper clamping assembly (21) includes upper adjusting rod (212) and upper clamping plate (214), upper adjusting rod (212) is rotatably installed on upper main crossbeam (113), and the bottom end of upper adjusting rod (212) is hinged with upper clamping plate (214) through upper ball head (213).
9. The construction joint end form and flashing securing device of claim 8, wherein, The lower clamping assembly (22) comprises a lower adjusting rod (222) and a lower clamping plate (224), the lower adjusting rod (222) is rotatably installed on the lower main cross beam (123), and the top end of the lower adjusting rod (222) is hinged to the lower clamping plate (224) through a lower ball head (223).
10. The construction joint and flashing retainer of claim 9, wherein, The top end of the upper adjusting rod (212) and the bottom end of the lower adjusting rod (222) are respectively fixedly installed with an upper handle (211) and a lower handle (221). The bottom end face of the upper clamping plate (214) and the top end face of the lower clamping plate (224) are respectively fixedly installed with an upper backing plate (215) and a lower backing plate (225), suitable for clamping the water stop belt.