Bridge supporting device with height capable of being adjusted in two directions

Abstract

The utility model relates to a bridge support device capable of bidirectionally adjusting height, which comprises an outer cylinder, a piston and a telescopic cylinder, the piston is fixed on the inner bottom wall of the outer cylinder, the telescopic cylinder is hermetically sleeved outside the piston, the upper end of the telescopic cylinder hermetically penetrates through the upper end of the outer cylinder, an annular cavity is formed between the side wall of the telescopic cylinder and the inner wall of the outer cylinder, and the telescopic cylinder is fixed on the inner bottom wall of the outer cylinder. The positions, corresponding to the lower end and the side wall of the telescopic cylinder, of the annular cavity are provided with low-melting-point alloy, and a jacking hydraulic cavity is formed between an inner cavity of the telescopic cylinder and the upper end of the piston. The first air inlet pipe and the air return pipe are arranged and are all connected with the external heating circulator, air is heated or refrigerated through the heating circulator, and therefore melting and cooling of the low-melting-point alloy are accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated beam construction, in particular to a bridge supporting device capable of bidirectionally adjusting height. Background Art

[0002] my country has been maintaining rapid development in infrastructure construction. Various types of construction can be seen everywhere. Temporary support or jacking devices are required in many constructions. Usually, temporary support or jacking devices require auxiliary support from steel pads, and the support height needs to be adjusted by adding or reducing pads, resulting in reduced construction efficiency. Therefore, a support device that is easy to adjust is needed to solve this problem.

[0003] After searching, the patent document CN217481652U proposed a built-in alloy height adjustment device, which can also have supporting capabilities, but when used, it can only be heated by setting a heating device on the lower part of the outer side of the cylinder body so that heat is conducted to melt the solid alloy and cooperate with the hydraulic oil to achieve the effect of height adjustment.

[0004] However, the disadvantage of the existing alloy height adjustment device is that the cooling speed of the device is too slow, which requires time to wait for the low-melting-point alloy in the device to solidify before the device can be supported, and the device only has a height adjustment function but no lowering function. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the disadvantage of the existing alloy type height adjustment device is that the cooling speed of the device is too slow, resulting in the need to set aside time to wait for the low melting point alloy in the device to solidify before the purpose of device support can be achieved, and the device only has a height adjustment function but no lowering function.

[0006] The utility model provides a technical solution to the above-mentioned technical problems as follows: a bidirectionally adjustable height bridge support device, comprising an outer cylinder, a piston and a telescopic cylinder, the piston being fixed on the inner bottom wall of the outer cylinder, the telescopic cylinder sealing sleeve being mounted outside the piston, and its upper end sealingly passes through the upper end of the outer cylinder, an annular cavity is formed between the side wall of the telescopic cylinder and the inner wall of the outer cylinder, a low-melting-point alloy is arranged in the annular cavity corresponding to the position of the lower end and the side wall of the telescopic cylinder, a lifting hydraulic cavity is formed between the inner cavity of the telescopic cylinder and the upper end of the piston, a descending hydraulic cavity is arranged between the inner cavity of the telescopic cylinder and the side of the piston, a lifting oil inlet channel and a descending oil channel which are connected to the lifting hydraulic cavity and the descending hydraulic cavity are respectively arranged inside the telescopic cylinder, and the outer cylinder is provided with a heating and cooling structure for heating the low-melting-point alloy.

[0007] The beneficial effect of the utility model is that the first air inlet pipe and the air return pipe are provided, and all three are connected to an external heating circulator, and the air is heated or cooled by the heating circulation, thereby accelerating the melting and cooling of the low melting point alloy.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the heating and cooling structure includes a first heat conduction cavity arranged in the side wall of the outer tube, and a first air inlet pipe and an air return pipe connected to the first heat conduction cavity are provided on the side wall of the outer tube, and the first air inlet pipe and the air return pipe are connected to an external heating circulator.

[0010] Furthermore, a spiral first gas circulation groove is provided on the inner wall of the outer cylinder, and an annular partition is provided on the inner wall of the outer cylinder. The first heat conduction cavity is formed between the first gas circulation groove and the annular partition. A gap for liquid low-melting-point alloy to pass through is formed between the outer edge of the annular protrusion and the inner wall of the annular partition. The first air inlet pipe and the air return pipe are connected to the first gas circulation groove.

[0011] Furthermore, the bottom wall of the outer tube is provided with a second heat conduction cavity, the second heat conduction cavity is communicated with the first heat conduction cavity, the bottom wall of the outer tube is connected with a second air inlet pipe communicated with the second heat conduction cavity, and the second air inlet pipe is connected to an external heating circulator.

[0012] Furthermore, a spiral second gas circulation groove is provided on the inner wall of the lower end of the outer tube, a bottom partition is provided on the inner wall of the lower end of the outer tube, a second heat conduction cavity is formed between the bottom partition and the second gas circulation groove, and a gas connection channel connected to the second air inlet pipe and the second gas circulation groove is opened on the inner wall of the bottom end of the outer tube.

[0013] Furthermore, a protruding annular protrusion is provided at the lower end of the telescopic cylinder, and a gap is formed between the outer edge of the annular protrusion and the inner wall of the first heat conduction cavity for liquid low-melting-point alloy to pass through.

[0014] Furthermore, a notch is provided on the inner side of the annular protrusion, and an annular first sealing member sealedly connected to the piston is installed in the notch.

[0015] Furthermore, an annular groove communicating with the descending oil channel is formed at the upper end of the first sealing member.

[0016] Furthermore, the piston includes a main body and a piston head arranged at the upper end of the main body, the main body and the piston head are both cylindrical components, and the diameter of the main body is smaller than the diameter of the piston head. The lower part of the edge of the piston head and the first sealing member and the inner wall of the telescopic cylinder together form the descending hydraulic chamber.

[0017] Furthermore, a descending oil inlet communicating with the descending oil passage is provided at the upper end of the telescopic cylinder, and a lifting oil inlet communicating with the lifting oil inlet passage is provided at the upper portion of the telescopic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the planar structure in an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the planar structure of the upper air inlet in an embodiment of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Telescopic cylinder; 2. Descending oil inlet; 3. End cover; 4. Guide belt; 5. Outer cylinder; 6. First air inlet pipe; 7. Descending oil channel; 8. First gas circulation groove; 9. Return pipe; 10. Second air inlet pipe; 11. Second gas circulation groove; 12. Screw; 13. Base; 14. Bottom partition; 15. Piston; 16. First sealing member; 17. Sealing ring; 18. Low melting point alloy; 19. Descending hydraulic chamber; 20. Annular partition; 21. Second sealing member; 22. Lifting hydraulic chamber; 23. Lifting oil inlet. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] Example

[0024] like Figure 1-2 As shown, a bidirectionally adjustable height bridge support device comprises an outer tube 5, a piston 15 and a telescopic tube 1, wherein the piston 15 is fixed on the inner bottom wall of the outer tube 5, wherein a bottom plate 13 is arranged at the bottom end of the outer tube 5, and the outer tube 5 is fixed on the bottom plate 13 by means of screws 12, an annular end cover 3 and a guide belt 4 are arranged on the inner wall of the upper end of the outer tube 5, the outer edge of the end cover 3 is connected to the inner wall of the upper end of the outer tube 5, and the guide belt 4 is arranged on the inner edge of the end cover 3, the telescopic tube 1 is sealed and sleeved outside the piston 15, and its upper end seal passes through the upper inner wall of the outer tube 5 At the end, an annular cavity is formed between the side wall of the telescopic cylinder 1 and the inner wall of the outer cylinder 5, and a low-melting-point alloy 18 is provided at the position of the annular cavity corresponding to the lower end and the side wall of the telescopic cylinder 1. A lifting hydraulic cavity 22 is formed between the inner cavity of the telescopic cylinder 1 and the upper end of the piston 15, and a descending hydraulic cavity 19 is provided between the inner cavity of the telescopic cylinder 1 and the side of the piston 15. A lifting oil inlet channel and a descending oil channel 7 which are connected with the lifting hydraulic cavity 22 and the descending hydraulic cavity 19 are respectively provided inside the telescopic cylinder 1, and the outer cylinder 5 is provided with a heating and cooling structure for heating the low-melting-point alloy 18.

[0025] The sealing ring 17, the second sealing member 21 and the guide belt 4 are all rubber ring components.

[0026] The working principle is: when the device is adjusted in height, the heating and cooling structure is first used to heat and melt the internal low-melting-point alloy 18. When the device is in use, heat conduction causes the solid low-melting-point alloy 18 in the alloy cavity to melt. At this time, the telescopic cylinder 1 can be telescoped up and down through the cooperation of external hydraulic oil. After the height adjustment is completed, the heating and cooling structure is used to accelerate the solidification of the low-melting-point alloy and keep the height of the telescopic cylinder 1 unchanged. The bidirectionally adjustable support can be used as a temporary support during the beam erection construction process to play a supporting role.

[0027] The utility model can heat or cool the air by arranging a heating and cooling structure on the inner wall of the outer cylinder, and realize the accelerated melting and accelerated cooling of the low melting point alloy 18 by heat conduction.

[0028] Preferably, the heating and cooling structure includes a first heat conduction cavity arranged in the side wall of the outer tube 5, and a first air inlet pipe 6 and an air return pipe 9 connected to the first heat conduction cavity are provided on the side wall of the outer tube 5, and the first air inlet pipe 6 and the air return pipe 9 are connected to the external heating circulator.

[0029] Preferably, a spiral first gas circulation groove 8 is provided on the inner wall of the outer cylinder 5, and an annular partition 20 is provided on the inner wall of the outer cylinder 5. A first heat conduction cavity is formed between the first gas circulation groove 8 and the annular partition 20. A gap for liquid low-melting-point alloy 18 to pass through is formed between the outer edge of the annular protrusion and the inner wall of the annular partition 20. The first air inlet pipe 6 and the air return pipe 9 are connected to the first gas circulation groove 8.

[0030] The working principle is: the air is heated by a heating circulator, and the heated air is circulated inside the first gas circulation groove 8, so that the low-melting-point alloy in the alloy cavity can mainly complete the melting of the upper alloy and pass through the gap, or the refrigerated gas can be used to accelerate the cooling of the low-melting-point alloy 18 to accelerate its solidification.

[0031] Preferably, the bottom wall of the outer tube 5 is provided with a second heat conduction cavity, the second heat conduction cavity is communicated with the first heat conduction cavity, the bottom wall of the outer tube 5 is connected with a second air inlet pipe 10 communicated with the second heat conduction cavity, and the second air inlet pipe 10 is connected to an external heating circulator.

[0032] Preferably, a spiral second gas circulation groove 11 is provided on the inner wall of the lower end of the outer tube 5, a bottom partition plate 14 is provided on the inner wall of the lower end of the outer tube 5, a second heat conduction cavity is formed between the bottom partition plate 14 and the second gas circulation groove 11, and a gas connection channel connected to the second air inlet pipe 10 and the second gas circulation groove 11 is opened on the inner wall of the bottom end of the outer tube 5.

[0033] The working principle is: by setting a bottom baffle 14 in conjunction with the second gas circulation groove 11, the heated gas can be circulated and heated in the second heat conduction cavity composed of the two, so that the heated gas can heat the bottom of the low-melting-point alloy 18 to pass through the gap, or use the refrigerated gas to accelerate the cooling of the bottom of the low-melting-point alloy 18 to accelerate its solidification.

[0034] In addition, when the air is circulated only through the first air inlet pipe 6 and the air return pipe 9, only the upper portion of the low-melting-point alloy 18 can be partially melted.

[0035] When the first air intake pipe 6 and the second air intake pipe 10 simultaneously intake air to complete the air circulation with the return air pipe 9, the low melting point alloy in the alloy cavity can be completely melted;

[0036] In the later stage, it can be selected whether to use the first air inlet pipe 6 and the second air inlet pipe 10 synchronously according to the height adjustment requirements of the specific project, so as to achieve the purpose of efficient height adjustment;

[0037] In addition, during the height adjustment process, the load of the telescopic cylinder 1 can be converted from the reading of the pressure gauge through an external hydraulic pump.

[0038] The utility model can achieve the heating and melting effect of different positions of the low melting point alloy 18 by setting the first air inlet pipe 6, the second air inlet pipe 10 and the return air pipe 9, in combination with the annular partition plate 20 and the bottom partition plate 14, so as to meet different requirements of actual conditions.

[0039] Preferably, a protruding annular protrusion is provided at the lower end of the telescopic cylinder 1, and a gap is formed between the outer edge of the annular protrusion and the inner wall of the first heat conduction cavity for the liquid low-melting-point alloy 18 to pass through.

[0040] Preferably, a notch is provided on the inner side of the annular protrusion, and an annular first sealing member 16 sealedly connected to the piston 15 is installed in the notch.

[0041] Preferably, an annular groove communicating with the descending oil passage 7 is provided on the outer portion of the upper end of the first sealing member 16 , so that the hydraulic oil can enter and exit the descending hydraulic chamber 19 through the descending oil passage 7 and the annular groove.

[0042] A sealing ring 17 is disposed on the inner edge of the first sealing member 16 , and the inner edge of the sealing ring 17 contacts the piston 15 .

[0043] The working principle is: by arranging a protrusion at the lower end of the telescopic cylinder 1, and arranging a first sealing member 16 at the inner edge of the protrusion, a gap is arranged between the outer edge of the protrusion and the inner wall of the first heat conduction cavity, so that the low melting point alloy 18 can flow through the gap in liquid state, which provides a basis for the subsequent height adjustment work;

[0044] At the same time, when hydraulic oil is injected into the descending oil channel 7, the hydraulic oil passes through the descending oil channel 7 and finally reaches the inside of the annular groove at the upper end of the first sealing member 16, so that the hydraulic oil can enter the descending hydraulic chamber 19 through the annular groove.

[0045] Preferably, the piston 15 includes a main body and a piston head arranged at the upper end of the main body, the main body and the piston head are both columnar components, and the diameter of the main body is smaller than the diameter of the piston head. The lower part of the edge of the piston head and the first sealing member 16 and the inner wall of the telescopic cylinder 1 form a descending hydraulic chamber 19.

[0046] Preferably, a descending oil inlet 2 communicating with the descending oil passage 7 is provided at the upper end of the telescopic cylinder 1 , and a lifting oil inlet 23 communicating with the lifting oil inlet passage is provided at the upper portion of the telescopic cylinder 1 .

[0047] A second annular sealing member 21 is disposed on the side of the piston head, and the outer edge of the second sealing member 21 contacts the inner wall of the telescopic cylinder 1 .

[0048] The working principle is: by injecting hydraulic oil into the lifting hydraulic chamber 22, the volume inside the lifting hydraulic chamber 22 changes, and a pressure difference between the inside and outside is generated, so that the telescopic cylinder 1 rises;

[0049] By injecting hydraulic oil into the descending hydraulic chamber 19, the pressure of the metal liquid surface on both sides of the first sealing member 16 changes, thereby driving the telescopic cylinder 1 to descend.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A bidirectionally height-adjustable bridge support device, characterized in that: The invention comprises an outer cylinder (5), a piston (15) and a telescopic cylinder (1), wherein the piston (15) is fixed on the inner bottom wall of the outer cylinder (5), the telescopic cylinder (1) is sealingly sleeved outside the piston (15), and the upper end of the telescopic cylinder (1) seals and passes through the upper end of the outer cylinder (5), an annular cavity is formed between the side wall of the telescopic cylinder (1) and the inner wall of the outer cylinder (5), a low melting point alloy (18) is provided at the position of the annular cavity corresponding to the lower end and the side wall of the telescopic cylinder (1), a lifting hydraulic cavity (22) is formed between the inner cavity of the telescopic cylinder (1) and the upper end of the piston (15), a descending hydraulic cavity (19) is provided between the inner cavity of the telescopic cylinder (1) and the side of the piston (15), a lifting oil inlet channel and a descending oil channel (7) are respectively provided inside the telescopic cylinder (1) and are connected to the lifting hydraulic cavity (22) and the descending hydraulic cavity (19), and the outer cylinder (5) is provided with a heating and cooling structure for heating the low melting point alloy (18).

2. A bidirectional height-adjustable bridge support device according to claim 1, characterized in that: The heating and cooling structure comprises a first heat-conducting cavity arranged in the side wall of the outer tube (5); a first air inlet pipe (6) and an air return pipe (9) communicating with the first heat-conducting cavity are arranged on the side wall of the outer tube (5); the first air inlet pipe (6) and the air return pipe (9) are connected to an external heating circulator.

3. A bidirectional height-adjustable bridge support device according to claim 2, characterized in that: The lower end of the telescopic cylinder (1) is provided with a protruding annular protrusion, and a gap is formed between the outer edge of the annular protrusion and the inner wall of the first heat conduction cavity for the liquid low melting point alloy (18) to pass through.

4. A bidirectional height-adjustable bridge support device according to claim 3, characterized in that: A spiral first gas circulation groove (8) is provided on the inner wall of the outer cylinder (5), and an annular partition (20) is provided on the inner wall of the outer cylinder (5); the first heat conduction cavity is formed between the first gas circulation groove (8) and the annular partition (20); a gap for liquid low-melting-point alloy (18) to pass through is formed between the outer edge of the annular protrusion and the inner wall of the annular partition (20); and the first air inlet pipe (6) and the air return pipe (9) are connected to the first gas circulation groove (8).

5. The bridge support device with bidirectional height adjustment according to claim 3, characterized in that: A notch is provided on the inner side of the annular protrusion, and an annular first sealing member (16) sealedly connected to the piston (15) is installed in the notch.

6. A bidirectionally height-adjustable bridge support device according to claim 5, characterized in that: An annular groove communicating with the descending oil channel (7) is formed at the upper end of the first sealing member (16).

7. A bidirectionally height-adjustable bridge support device according to claim 6, characterized in that: The piston (15) comprises a main body and a piston head arranged at the upper end of the main body, wherein the main body and the piston head are both cylindrical components, and the diameter of the main body is smaller than the diameter of the piston head. A descending hydraulic chamber (19) is formed between the lower edge of the piston head, the first sealing member (16) and the inner wall of the telescopic cylinder (1).

8. A bidirectionally height-adjustable bridge support device according to any one of claims 2 to 7, characterized in that: The bottom wall of the outer tube (5) is provided with a second heat-conducting cavity, the second heat-conducting cavity is communicated with the first heat-conducting cavity, the bottom wall of the outer tube (5) is connected with a second air inlet pipe (10) communicated with the second heat-conducting cavity, and the second air inlet pipe (10) is connected to an external heating circulator.

9. A bidirectionally height-adjustable bridge support device according to claim 8, characterized in that: The inner wall at the lower end of the outer tube (5) is provided with a spiral second gas circulation groove (11), the inner wall at the lower end of the outer tube (5) is provided with a bottom partition plate (14), and the second heat conduction cavity is formed between the bottom partition plate (14) and the second gas circulation groove (11), and the inner wall at the bottom end of the outer tube (5) is provided with a gas connection channel connected with the second air inlet pipe (10) and the second gas circulation groove (11).

10. The bridge support device with bidirectional height adjustment according to claim 1, characterized in that: The upper end of the telescopic cylinder (1) is provided with a descending oil inlet (2) communicating with the descending oil channel (7), and the upper part of the telescopic cylinder (1) is provided with a lifting oil inlet (23) communicating with the lifting oil inlet channel.

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