Device for detecting repairing effect of internally doped repairing material on concrete structure crack

Abstract

The utility model relates to a device for detecting the repairing effect of an internally doped repairing material on a concrete structure crack. The device comprises a clamping unit; a water storage unit; and a water receiving unit. On one hand, the test pieces are positioned through the positioning grooves, and the position precision between the test pieces is improved, so that the sections of the test pieces are uniformly stressed during fastening, and consistent crack width is ensured; on the other hand, by adjusting the height of the bottom of the overflow opening, the overflow height of water flow in the water storage cavity is adjusted, the water amount in the water storage cavity is accurately adjusted, and different detection requirements are flexibly met; in addition, the operation is simple and convenient, and the detection efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection, concretely relates to a detection device for the crack repair effect of internal mixing repair material on concrete structure. BACKGROUND

[0002] Concrete has the advantages of high strength, good moldability and easy material selection, and is widely used in various infrastructure such as bridges, dams and tunnels. However, under the action of external force, temperature, humidity and other factors, microcracks will occur in the internal part of the concrete structure and gradually penetrate. At this time, various corrosion media in the environment enter the internal part of the structure through the microcracks on the surface of the structure, causing serious damage to the durability of the structure. Research shows that adding self-repairing material to the concrete mixture can repair the internal microcracks of the concrete structure and improve the anti-erosion performance of the structure. The reason is that the composite material can undergo physicochemical reactions with cement hydration products and gradually form crystal substances. The formation of crystal substances can fill the microcracks and other defects in the concrete specimen, repairing the structure cracks and improving the compactness of the concrete structure.

[0003] At present, the detection device for the self-repairing performance of the concrete structure cracks in the standard mainly consists of a fixing device (two baffle plates, two screw rods, nuts, gaskets), a water pipe, a water supply system and a water container, and needs to be tested according to the following steps: (1) take the broken concrete specimen and paste PVC gaskets and sealing materials on the fracture surface; (2) align the two concrete specimens along the breaking direction, and use a torque wrench to tighten the nuts on the two screw rods in turn and drive the baffle plates to press tightly against the end surfaces of the corresponding specimens, wherein the tightening torque is 40 N·m; at this time, a crack about 0.3 mm is formed on the fracture surface of the concrete specimen; (3) fix the water pipe containing the water head with sealant directly above the crack of the concrete specimen; (4) connect the water supply system to the water pipe, control the flow of the water supply system, and keep the water head height in the water pipe unchanged; (5) place the water container directly below the crack of the concrete specimen, and record the water seepage amount of the crack of the concrete specimen within 1 min.

[0004] However, during the actual test operation, the device has the following defects:

[0005] 1. During the tightening process, the specimens may deviate from each other due to improper operation and are difficult to be fixed in the middle part of the baffle, resulting in uneven force distribution on the contact surface between the specimens and the baffle, and the crack width at different positions of the fracture surface of the specimen is difficult to keep consistent; at the same time, multiple adjustments are needed to ensure that the two nuts have the same tightening torque, which is tedious and inefficient;

[0006] 2. During testing, if it is necessary to adjust the water head height, multiple overflow outlets need to be installed on the surface of the water pipe or the water pipe needs to be replaced. If multiple overflow outlets are installed, a small amount of water may remain in the overflow outlet connection pipe at the lower position, which will affect the actual water storage capacity of the water pipe. If the water pipe is replaced, it needs to be resealed to the surface of the concrete specimen, which is a complicated operation. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a brand-new detection device for the effect of internally added repair materials on the repair of cracks in concrete structures.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A testing device for detecting the effect of internally added repair materials on the repair of cracks in concrete structures, comprising:

[0010] The clamping unit includes a positioning seat and a fastener, wherein the positioning seat has a positioning groove that matches the specimen and is vertically continuous, the assembled specimen is inserted into the positioning groove, and the fastener is used to tighten or loosen the specimen along the splicing direction.

[0011] The water storage unit includes a water storage cavity sealed to the upper surface of the specimen and a water supply component. The bottom of the water storage cavity is open and covers the cracks on the upper surface of the specimen. An overflow port is formed on the side wall. The bottom of the overflow port can be adjusted up and down. The water supply component is used to supply water to the water storage cavity and keep the liquid level in the water storage cavity flush with the bottom of the overflow port.

[0012] The water receiving unit includes a water receiving pool, which is located below the positioning groove and is used to receive water leaking from the cracks in the specimen.

[0013] Preferably, the positioning base includes two end plates spaced apart along the splicing direction of the specimen, and two side plates connected between the two end plates and spaced apart along the thickness direction of the specimen, wherein a positioning groove is formed between the two end plates and the two side plates. This design is simple and easy to assemble and implement.

[0014] Specifically, during fixing, the specimen rests against one end plate, and a fastener passes through the other end plate and abuts against the other end of the specimen; and / or, the fastener includes a threaded rod passing through the corresponding end plate and extending one end into a positioning groove, and a pressure plate disposed at one end of the threaded rod. In the orthographic projection on the end plate, the center of the threaded rod, the pressure plate, and the specimen coincides. This facilitates precise adjustment of the crack width between concrete specimens to achieve the standard-specified tightening torque.

[0015] Preferably, the test piece is positioned in the positioning groove upwardly; the detection device further comprises a crack width detector arranged on one side of the positioning seat and used for detecting the crack of the test piece.

[0016] Preferably, the side wall of the water storage cavity is formed with an adjusting groove extending upwardly and downwardly, and a height-adjustable adjusting module is sealingly connected in the adjusting groove, wherein an overflow port is formed between the top of the adjusting module and the side wall of the adjusting groove.

[0017] Specifically, the adjusting module comprises a module body and a plurality of cushion blocks arranged on the bottom of the module body and stacked upwardly and downwardly. That is to say, the height of the module body is adjusted by the number of the cushion blocks, so that the height of the bottom of the overflow port is adjusted to adjust the liquid level in the water storage cavity. In other specific embodiments, the adjusting module can also adopt a folding structure, and the module body is folded or unfolded by the driving of the telescopic rod to adjust the height of the bottom of the overflow port.

[0018] Further, the adjusting groove and the adjusting module constitute an adjusting group, and there are two adjusting groups located on opposite sides of the water storage cavity, wherein the module body in each adjusting group is provided with a joint communicating with the inside of the water storage cavity, a water supply component is connected with one joint, and another joint is communicated with a drainage component. Here, the overflow speed of the water in the water storage cavity is ensured to accurately control the liquid level height, and at the same time, the drainage component is arranged to facilitate the discharge of excess water flow.

[0019] Preferably, the water storage cavity is in a cylindrical shape.

[0020] Preferably, the water storage cavity is further provided with an annular overflow groove located below the overflow port in the circumferential direction. Here, the annular overflow groove is used to receive the water flow overflowing from the overflow port, so as to avoid affecting the detection result.

[0021] In addition, the detection device further comprises a support, the support comprising a vertical support, a first horizontal support and a second horizontal support which are arranged on the vertical support in an up-down interval and can be adjusted in a transverse extension, wherein the water supply component is fixed on the top of the vertical support, and the clamping unit and the water receiving unit are sequentially mounted on the first horizontal support and the second horizontal support. During the detection process, the stretching length of each horizontal support can be adjusted according to the actual needs, and after the detection is completed, the horizontal support can also be retracted and stored.

[0022] Thanks to the above technical solutions, the present application has the following advantages compared with the prior art:

[0023] The prior art is prone to offset between test pieces during fastening due to improper operation, and it is difficult to fix the test pieces in the middle of the baffle, resulting in uneven force distribution on the contact surface of the test piece and the baffle, and the crack width at different positions of the test piece cross section is difficult to keep consistent; at the same time, multiple adjustments are required to ensure that the two nuts have the same fastening torque, which is complicated and low in efficiency; when detecting, if the water head height needs to be adjusted, multiple overflow openings need to be arranged on the surface of the water pipe or the water pipe needs to be replaced, and if multiple overflow openings are arranged, a small amount of water flow is prone to be stored in the overflow opening connecting pipe at the lower position, which will affect the actual water storage capacity of the water pipe; and if the water pipe is replaced, it needs to be resealed to the surface of the concrete test piece, which is a relatively complicated operation process; the structure of the device for detecting the repair effect of the internal repair material on the concrete structure crack is designed as a whole, and the deficiencies and defects of the prior art are ingeniously solved, after the device is adopted, the spliced test piece is inserted and positioned in the positioning groove, and the test piece is tightly pressed along the splicing direction of the test piece through the fastening piece, and the fastening is completed; then the water storage cavity is sealingly connected to the upper surface of the test piece from the bottom, and the bottom opening of the water storage cavity covers the crack on the upper surface of the test piece, and the height of the overflow opening of the side wall of the water storage cavity is adjusted; then water flow is transported into the water storage cavity through the water supply part, and the liquid level in the water storage cavity is kept flush with the bottom of the overflow opening; finally, the water amount in the water receiving pool is observed, and the water seepage amount of the test piece crack within 1min is recorded, and the detection is completed. Therefore, compared with the prior art, on the one hand, the positioning groove is used to position the test piece, the position accuracy between the test pieces is improved, the test piece cross section is evenly stressed during fastening, and the crack width is consistent; on the other hand, the bottom height of the overflow opening is adjusted to adjust the overflow height of the water flow in the water storage cavity and accurately adjust the water amount in the water storage cavity, and different detection requirements are flexibly applicable; in addition, the operation is simple, the detection efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0025] Figure 1 It is the front view schematic diagram of the device for detecting the repair effect of the internal repair material on the concrete structure crack of the embodiment;

[0026] Figure 2 It is Figure 1 The top view schematic diagram of the clamping unit;

[0027] Figure 3 It is Figure 1 The structure enlarged schematic diagram of the water storage cavity;

[0028] Figure 4 It is Figure 3 The top view schematic diagram;

[0029] Figure 5 It isFigure 4 schematic view of the main view of the module body;

[0030] 1, support; 10, vertical support; 11, first horizontal support; 12, second horizontal support;

[0031] 2, clamping unit; 20, positioning seat; 200, end plate; 201, side plate; c0, positioning groove; 21, fastener; 210, screw rod; 211, pressing plate;

[0032] 3, water storage unit; 30, water storage cavity; k0, overflow port; 300, overflow groove; c1, adjusting groove; m, adjusting module; m0, module body; t, joint; m1, cushion block; 31, water supply component; 310, water storage pool; 311, water supply pipe; 312, flow control valve; 32, drainage component; 320, drainage pool; 321, drainage pipe;

[0033] 4, water receiving unit; 40, water receiving pool;

[0034] 5, crack width measuring instrument;

[0035] S, test piece. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated elements. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically defined.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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 internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0041] As Figures 1 to 5 As shown in the figure, the device for detecting the repair effect of the internal mixing repair material on the crack of the concrete structure of the embodiment comprises a support 1, a clamping unit 2, a water storage unit 3 and a water receiving unit 4. The test piece S of the embodiment is composed of two concrete blocks that are broken and spliced from the broken surface.

[0042] Specifically, the support 1 comprises a vertical support 10, a first horizontal support 11 and a second horizontal support 12 which are arranged on the vertical support 10 in an up-down interval and can be adjusted in a transverse expansion, and the clamping unit 2 and the water receiving unit 4 are sequentially installed on the first horizontal support and the second horizontal support. During the detection process, the stretching length of each horizontal support can be adjusted according to actual needs, and after the detection is completed, it can also be retracted and stored.

[0043] In this example, the clamping unit 2 comprises a positioning seat 20 and a fastener 21, wherein the positioning seat 20 is formed with a positioning groove c0 which is matched with the test piece S and penetrates up and down, the test piece S is inserted into the positioning groove c0 after splicing, and the fastener 21 is used to tightly or loosely press the test piece S along the splicing direction.

[0044] In some specific embodiments, the positioning seat 20 is installed on the first horizontal support 11 and comprises two end plates 200 which are arranged in an interval along the splicing direction of the test piece S, and two side plates 201 which are connected between the two end plates 200 and arranged in an interval along the thickness direction of the test piece S, wherein the positioning groove c0 is formed between the two end plates 200 and the two side plates 201. Here, the structure is simple and easy to assemble and implement.

[0045] When fixed, the test piece S abuts against one end plate 200 from one end, and the fastener 21 penetrates through the other end plate 200 and abuts against the other end of the test piece S; the fastener 21 comprises a screw rod 210 which penetrates through the corresponding end plate 200 and extends into the positioning groove c0 from one end, a pressing plate 211 which is arranged at one end of the screw rod 210, and a nut which is sleeved on the screw rod 210, and in the orthographic projection on the end plate, the center of the screw rod 210, the pressing plate 211 and the test piece S coincide. Here, it is convenient to accurately adjust the crack width between the concrete test pieces to achieve the standard specified fastening torque.

[0046] In order to facilitate implementation, the bottom of the two end plates 200 is formed with a support portion which protrudes inward, the test piece S is inserted into the positioning groove c0 and supported on the support portion from the bottom; at the same time, the test piece S is arranged by protruding upward out of the positioning groove c0; the detection device further comprises a crack width measuring instrument 5 which is arranged on one side of the positioning seat 20 and used for detecting the crack of the test piece, and the crack width measuring instrument 5 is fixedly installed on the vertical support 10. Here, the crack width of the concrete test piece is observed in real time and dynamically by means of the crack width measuring instrument.

[0047] In this example, the water storage unit 3 comprises a water storage cavity 30 which is sealingly connected to the upper surface of the test piece S, and a water supply component 31, the bottom of the water storage cavity 30 is open and covers the crack on the upper surface of the test piece S, and the side wall is formed with an overflow port k0, wherein the bottom of the overflow port k0 can be adjusted up and down, and the water supply component 31 is used to supply water to the water storage cavity 30 and keep the liquid level in the water storage cavity 30 flush with the bottom of the overflow port k0.

[0048] In some embodiments, the water storage cavity 30 is a hollow water pipe in a cylindrical shape, and the circumferential direction of the water storage cavity 30 is further provided with an annular overflow groove 300 located below the overflow port k0. Here, the overflow groove is used to collect the water overflowing from the overflow port to avoid affecting the detection results.

[0049] Meanwhile, the side wall of the water storage cavity 30 is formed with an adjusting groove c1 extending upward and downward, and a height-adjustable adjusting module m is sealingly connected in the adjusting groove c1. The top of the adjusting module m and the side wall of the adjusting groove c1 form an overflow port.

[0050] Specifically, the adjusting module m includes a module body m0 and a plurality of spacers m1 arranged on the bottom of the module body m0 and stacked upward and downward. That is, the height of the module body is adjusted by the number of spacers, so as to adjust the height of the bottom of the overflow port to adjust the liquid level in the water storage cavity. In other embodiments, the adjusting module m can also adopt a sealing member with a folding structure. The bottom of the adjusting module m is fixedly connected to the bottom of the adjusting groove c1, the side of the adjusting module m is slidingly connected to the side wall of the adjusting groove c1, and the module body is folded and unfolded by the driving of the telescopic rod to adjust the height of the bottom of the overflow port.

[0051] In addition, in order to ensure the sealing and facilitate disassembly, the adjusting groove c1 penetrates upward to the top of the water storage cavity, and the side wall of the adjusting groove c1 is recessed inward to form a groove. The opposite sides of the module body m0 and the spacers m1 are formed with protrusions matched with the groove, and each protrusion is inserted into the groove and can slide upward and downward. The module body m0 and the spacers m1, and the spacers m1 are all formed with a plug-in fit.

[0052] Further, the adjusting groove c1 and the adjusting module m constitute an adjusting group, and there are two adjusting groups located on opposite sides of the water storage cavity 30. Each module body m0 in each adjusting group has a joint t communicating with the inside of the water storage cavity. The water supply component 31 is connected to one joint t, and the other joint t is communicated with the drainage component 32. Here, the overflow speed of the water in the water storage cavity is ensured to accurately control the liquid level height, and the drainage component is arranged to facilitate the drainage of excess water.

[0053] In order to further facilitate implementation, the water supply component 31 is fixed to the top of the vertical frame 10 and includes a water storage tank 310, a water supply pipe 311 connecting the water storage tank 310 and the corresponding joint t, and a flow control valve 312 for controlling the flow of the water supply pipe 311. The drainage component 32 includes a drainage tank 320 arranged on the second cross frame 12 and a drainage pipe 321 communicating between the drainage tank 320 and the other joint t.

[0054] In this example, the water receiving unit 4 includes a water receiving tank 40 arranged on the second cross frame 12 and located below the positioning groove c0 for receiving the water leaking from the cracks of the test piece.

[0055] In summary, after adopting the detection device, the spliced test piece is inserted and positioned in the positioning groove, and is fastened along the splicing direction of the test piece by the fastener; then the water storage cavity is sealingly connected to the upper surface of the test piece from the bottom, and the bottom opening of the water storage cavity covers the crack on the upper surface of the test piece, and the height of the overflow port of the side wall of the water storage cavity is adjusted; then water flow is transported into the water storage cavity through the water supply component, and the liquid level in the water storage cavity is kept flush with the bottom of the overflow port; finally, the water quantity in the water receiving pool is observed, and the water seepage quantity of the crack of the test piece within 1 min is recorded, and the detection is completed. Therefore, compared with the prior art, on the one hand, the positioning groove is used to position the test piece, the position accuracy between the test pieces is improved, the stress on the test piece section is uniform in fastening, and the crack width is consistent; on the other hand, the height of the bottom of the overflow port is adjusted, the overflow height of the water flow in the water storage cavity is adjusted, and the water quantity in the water storage cavity is accurately adjusted, and different detection requirements are flexibly applicable; in addition, the operation is simple, the detection efficiency is high; thirdly, the crack width of the concrete test piece is observed in real time and dynamically by means of the crack width instrument; fourthly, the height of the overflow port bottom is adjusted by adjusting the height of the module body through the number of the cushion blocks, so as to adjust the liquid level in the water storage cavity; fifthly, the stretching length of each cross frame can be adjusted according to actual needs during the detection process, and the cross frame can also be retracted and stored after the detection is completed.

[0056] The above has described the utility model in detail, the purpose is to let the person who is familiar with this field technology can understand the content of the utility model and implement, and cannot limit the protection scope of the utility model with this, all equivalent changes or modifications according to the spirit of the utility model should be covered in the protection scope of the utility model.

Claims

1. A device for detecting the effect of internal admixture repair material on the repair of cracks in a concrete structure, characterized in that, It comprises: a clamping unit comprising a positioning seat and a fastener, wherein the positioning seat is formed with a positioning slot matching the test piece and penetrating through the positioning seat from top to bottom, the test piece is inserted into the positioning slot after splicing, and the fastener is used to press against or loosen the test piece along the splicing direction; a water storage unit comprising a water storage cavity sealingly connected to the upper surface of the test piece, a water supply component, the bottom of the water storage cavity is open and covers the crack on the upper surface of the test piece, and the side wall is formed with an overflow port, wherein the bottom of the overflow port can be adjusted up and down, and the water supply component is used to supply water to the water storage cavity and keep the liquid level in the water storage cavity flush with the bottom of the overflow port; a water receiving unit comprising a water receiving pool arranged below the positioning slot and used to receive the water leaking from the crack of the test piece.

2. The device for detecting the effect of repairing a crack of a concrete structure with an internal admixture repair material according to claim 1, characterized in that, The positioning seat comprises two end plates spaced along the splicing direction of the test piece, and two side plates connected between the two end plates and spaced along the thickness direction of the test piece, wherein the positioning slot is formed between the two end plates and the two side plates.

3. The device for detecting the effect of repairing a crack of a concrete structure with an internal admixture according to claim 2, wherein When fixed, the test piece abuts against one end plate from one end, the fastener penetrates through the other end plate and abuts against the other end of the test piece; and / or the fastener comprises a screw rod penetrating through the corresponding end plate and extending into the positioning slot from one end, and a pressing plate arranged at one end of the screw rod, wherein the center of the screw rod, the pressing plate and the test piece coincide in the orthographic projection on the end plate.

4. The device for detecting the effect of repairing a crack of a concrete structure with an internal admixture repair material according to claim 1, characterized in that, The test piece protrudes out of the positioning slot; the detection device further comprises a crack width measuring instrument arranged on one side of the positioning seat and used to detect the crack of the test piece.

5. The device for detecting the effect of repairing a crack of a concrete structure by internally mixing a repair material according to claim 1, characterized in that, The side wall of the water storage cavity is formed with an adjusting slot extending up and down, and an adjustable adjusting module is sealingly connected in the adjusting slot, wherein the overflow port is formed between the top of the adjusting module and the side wall of the adjusting slot.

6. The device for detecting the effect of repairing a crack of a concrete structure with an internal admixture according to claim 5, wherein The adjusting module comprises a module body and a plurality of cushion blocks arranged on the bottom of the module body and stacked up and down.

7. The apparatus for detecting the effect of the repair of the crack of the concrete structure by the internal admixture of the repair material according to claim 6, characterized in that, The adjusting slot and the adjusting module constitute an adjusting group, and there are two adjusting groups located on opposite sides of the water storage cavity, wherein the module body in each adjusting group is provided with a joint communicating with the inside of the water storage cavity, one joint is connected with the water supply component, and the other joint is connected with a drainage component.

8. The apparatus for detecting the effect of the internal admixture repair material on the repair of the crack of the concrete structure according to any one of claims 1 to 7, characterized in that, The water storage cavity is in a cylindrical shape.

9. The apparatus for detecting the effect of the internal impregnation of the repair material on the repair of the cracks in the concrete structure according to claim 8, characterized in that, The circumferential direction of the water storage cavity is further provided with an annular overflow groove located below the overflow port.

10. The device for detecting the effect of repairing a crack of a concrete structure with an internal admixture repair material according to claim 1, wherein The detection device further comprises a support, the support comprises a vertical support, a first horizontal support and a second horizontal support arranged on the vertical support in a vertically spaced manner and capable of transverse expansion adjustment, wherein the water supply component is fixed on the top of the vertical support, and the clamping unit and the water receiving unit are installed on the first horizontal support and the second horizontal support in sequence.

Images