Bridge support displacement monitoring and alarming device

Abstract

The utility model discloses a bridge support displacement monitoring and alarming device which comprises a power failure alarm and a wire. The upper fixing assembly is fixed to the upper steel plate, the lower fixing assembly is fixed to the lower steel plate, and the triggering assembly is in sliding fit with the upper fixing assembly so that when the upper steel plate moves leftwards, rightwards, upwards, downwards, inwards or outwards relative to the lower steel plate to a preset value, electric connection with the upper fixing assembly or the lower fixing assembly can be disconnected, and an alarm can be given through the power failure alarm. When the displacement of the upper steel plate reaches a preset value, the triggering assembly and the upper fixing assembly are electrically disconnected, namely the triggering assembly and the upper fixing assembly are disconnected, power is cut off, and the power-off alarm automatically gives an alarm, or the triggering assembly and the lower fixing assembly are electrically disconnected, namely the triggering assembly and the lower fixing assembly are disconnected, power is cut off, and the power-off alarm automatically gives an alarm. The stability and the reliability are relatively good, and all-directional detection and alarm of left, right, upper, lower, inner or outer displacement can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge monitoring equipment, and particularly relates to a bridge bearing displacement monitoring and alarming device. Background Technique

[0002] A bridge bearing generally includes an upper steel plate fixed to the upper part of the bridge, such as the main beam, a bearing body made of rubber and located in the middle height, and a lower steel plate fixed to the lower part of the bridge, such as the bridge pier. During actual use, due to various objective factors such as upper load, structural self-weight, and material aging, the situation of bridge bearing displacement often occurs. The displacement of the bridge bearing essentially means the relative displacement between the upper steel plate and the lower steel plate, and generally specifically manifests as the displacement of the upper steel plate, such as bearing void, excessive compression of the bearing, and horizontal misalignment of the bearing, etc., which leads to an increase in the pressure borne by some components, damages the service performance of the bridge, and even damages the main beam. Therefore, once the bridge bearing displacement exceeds the predetermined value, it must be detected as early as possible and an alarm should be issued immediately so that manual resetting can be carried out in a timely manner.

[0003] In the early stage, the monitoring of bridge bearing displacement mainly relied on video monitoring, which relied more on manual experience and required personnel to watch video materials for a long time. From the perspectives of labor intensity, monitoring accuracy, and labor cost, it was a way with high input and low output, so it has been gradually phased out.

[0004] In recent years, many monitoring structures have emerged. Once the bridge bearing displacement exceeds the predetermined value or is over-limit, a long-distance alarm is issued. After the receiving terminal, such as a computer, receives the alarm signal, manual resetting is carried out in a timely manner. However, a relatively large number of precision components need to be installed on each bridge bearing, such as multiple sensors, such as pressure sensors, inclination sensors, temperature sensors, and displacement sensors, etc., for synchronous monitoring. The common drawback of the above existing monitoring structures is that the structure is relatively complex, and the precision requirements for components such as sensors are high. Therefore, the cost of the monitoring equipment is relatively high, and the installation is relatively difficult.

[0005] Subsequent technicians do not adopt the structure of synchronously monitoring with multiple sensors and other components, but instead adopt a mechanical structure for monitoring displacement. Once there is displacement of the bridge bearing, the conductor on-off method is used for alarm. Compared with the above existing technologies, this structure is relatively simple and the cost is relatively low. However, this structure still has the following deficiencies: for example, some use contact alarms, which require good contact before they can alarm, and the sensitivity of the alarm is slightly insufficient; for example, some use contact alarms plus long-distance reading of scales to determine displacement, and their convenience and speed are slightly insufficient; some use upper and lower touch rods with inclined surface fitting, and use the disconnection of the circuit to alarm through a power-off alarm. The sensitivity of the power-off alarm is relatively higher than the above contact alarms, but this structure cannot detect and alarm for displacements in all directions, left, right, up, down, in or out. For example, displacements such as excessive compression type displacement, that is, the upper steel plate moves downward and the inclined surfaces of the upper and lower touch rods are compressed towards each other, cannot be detected and alarmed; especially, the alarm is triggered instantaneously when the upper and lower touch rods are disengaged, rather than when the displacement reaches a predetermined value or exceeds the limit. Since the predetermined value of the displacement cannot be preset, it increases the difficulty of actual application; also, in the initial state, it is required that the axes of the upper and lower touch rods are aligned and at the same time, it is required that the two inclined contact surfaces are fitted, which brings certain difficulties to the installation. Utility Model Content

[0006] The technical problem to be solved by the present utility model is to provide a bridge bearing displacement monitoring and alarm device that alarms when the bridge bearing displacement reaches a predetermined value and cuts off the power, can detect displacements in all directions, left, right, up, down, in or out, and is convenient to install.

[0007] The technical solution of the present utility model is to provide a bridge bearing displacement monitoring and alarm device, which includes a power-off alarm and a wire, and also includes an upper fixing component fixed to the upper steel plate, a lower fixing component fixed to the lower steel plate, and a trigger component that is slidably matched with the upper fixing component horizontally to disconnect the electrical connection with the upper fixing component or the lower fixing component when the upper steel plate moves left, right, up, down, in or out to a predetermined value, so as to alarm through the power-off alarm.

[0008] After adopting the above structure, the bridge bearing displacement monitoring and alarm device of the present utility model has the following advantages: when the displacement of the upper steel plate relative to the lower steel plate reaches a predetermined value, the trigger component disconnects the electrical connection with the upper fixing component, that is, the two are disengaged and the power is cut off, and the power-off alarm automatically alarms, or the trigger component disconnects the electrical connection with the lower fixing component, that is, the two are disengaged and the power is cut off, and the power-off alarm automatically alarms. The sensitivity of the alarm is relatively high, and it alarms as soon as the power is cut off, which is convenient and fast, and its stability and reliability are also relatively good. And it can detect and alarm for displacements in all directions, left, right, up, down, in or out.

[0009] Further, the upper fixing assembly includes a first vertical rod and a second vertical rod, both of which are fixed to the upper steel plate at their tops. The first vertical rod is shorter than the second vertical rod. The first vertical rod is away from the lower fixing assembly, and the second vertical rod is close to the lower fixing assembly. A first rectangular conductive block is fixed to the bottom end of the first vertical rod, and a slide rod through hole is provided at the lower end of the second vertical rod. After adopting the above structure, the structure of the upper fixing assembly is simple, and the connection with the upper steel plate is firm and stable.

[0010] Further, the lower fixing assembly includes a third vertical rod fixed to the lower steel plate at its bottom end. A second rectangular conductive block is fixed to the side of the third vertical rod close to the upper fixing assembly. A rigid insulating plate is sleeved and fixed on the second rectangular conductive block. The end face of the rigid insulating plate close to the upper fixing assembly has four insulating surfaces: upper, lower, inner, and outer. After adopting the above structure, the structure of the lower fixing assembly is simple, and the connection with the lower steel plate is firm and stable.

[0011] Further, the triggering assembly includes a slide rod that is horizontally slidably matched with the slide rod through hole of the second vertical rod. One end of the slide rod away from the lower fixing assembly is fixed with a third rectangular conductive block that disconnects from the first rectangular conductive block of the upper fixing assembly when the upper steel plate displaces in the direction close to the lower fixing assembly, resulting in power-off and triggering the first power-off alarm. One end of each of the first wires connected to both ends of the first power-off alarm is electrically connected to the first rectangular conductive block and the third rectangular conductive block respectively. One end of the slide rod close to the lower fixing assembly is fixed with a fourth rectangular conductive block that disconnects from the second rectangular conductive block of the lower fixing assembly when the upper steel plate displaces in the direction away from the lower fixing assembly, triggering the second power-off alarm. When the upper steel plate displaces upward, downward, inward, or outward relative to the lower steel plate, the fourth rectangular conductive block disconnects from the second rectangular conductive block and respectively abuts against the upper, lower, inner, and outer four insulating surfaces of the rigid insulating plate, resulting in power-off and triggering the second power-off alarm. A compression spring is movably sleeved on the slide rod, with one end abutted against the second vertical rod and the other end abutted against the fourth rectangular conductive block. One end of each of the second wires connected to both ends of the second power-off alarm is electrically connected to the second rectangular conductive block and the fourth rectangular conductive block or the conductive slide rod respectively. After adopting the above structure, the structure of the triggering assembly is simple, and the cooperation with the upper fixing assembly and the lower fixing assembly is flexible, stable, and reliable. Predetermined values such as the distance or dimension of movement in each direction can be preset in the left, right, up, down, inner, and outer directions. Moreover, the displacement monitoring and alarm device for this bridge bearing is convenient and fast to install, further ensuring the technical effects of automatically triggering the power-off alarm when power-off occurs, relatively high sensitivity of the alarm, convenient and fast alarm, good stability and reliability, and enabling full-range detection and alarm of displacement in the left, right, up, down, inner, or outer directions.

[0012] Further, the first vertical rod and the second vertical rod are parallel to each other and are both fixed to the upper steel plate through a first connecting plate. The first vertical rod and the second vertical rod are in a plumb state in the initial state. After adopting the above structure, the installation of the upper fixing assembly is more convenient, firm, stable, and reliable.

[0013] Further, the third vertical rod is fixed to the lower steel plate through a second connecting plate, and the third vertical rod is in a plumb state in the initial state. After adopting the above structure, the installation of the lower fixing component is more convenient, firm, stable and reliable.

[0014] Further, there is a screw through hole at the upper end of the third vertical rod. A screw passes through the screw through hole. One end of the screw close to the upper fixing component is fixed to the second rectangular conductive block. The other end of the screw away from the upper fixing component has a first external thread. A first nut is screwed onto the first external thread and fastened to the third vertical rod. After adopting the above structure, the connection between the second rectangular conductive block and the third vertical rod is more convenient, fast, firm, stable and reliable, and the adjustment of a predetermined value of displacement in a certain direction, such as leftward displacement, can be carried out, making the applicable range wider.

[0015] Further, the end face of the second rectangular conductive block close to the upper fixing component is flush with the upper, lower, inner and outer four insulating surfaces of the rigid insulating plate. After adopting the above structure, the movement of the fourth rectangular conductive block vertically upward, downward, inward or outward relative to the four insulating surfaces of the second rectangular conductive block and the rigid insulating plate is smoother and more flexible, and its monitoring of power-off when reaching a predetermined value is more accurate, reliable and stable.

[0016] Further, the end of the sliding rod away from the lower fixing component has a second external thread. A second nut is screwed onto the second external thread, and the second nut is fixed to the third rectangular conductive block; the right end of the first rectangular conductive block is fixed to the second vertical rod; the length of the third rectangular conductive block is shorter than that of the first rectangular conductive block. In the initial state, the third rectangular conductive block is located in the middle of the length of the first rectangular conductive block and is in contact and conducts electricity with each other. The predetermined value of the leftward displacement of the upper steel plate is greater than the distance between the right end face of the third rectangular conductive block in the initial state and the second vertical rod in the initial state; the predetermined value of the rightward displacement of the upper steel plate is greater than the distance between the right end face of the third rectangular conductive block in the initial state and the left end face of the first rectangular conductive block in the initial state. After adopting the above structure, the connection between the third rectangular conductive block and the sliding rod is more convenient, firm, stable and reliable. The presetting of the predetermined values of the left and right displacements of the upper steel plate is more convenient and accurate, and the adjustment of a predetermined value of displacement in a certain direction, such as rightward displacement, can be carried out, making the applicable range wider.

[0017] Further, the shape of the rigid insulating plate is square inside and circular outside, and the upper, lower, inner, and outer sides are all equal. The cross-sectional shapes of the fourth rectangular conductive block and the second rectangular conductive block are both square and their sizes are equal. In the initial state, the fourth rectangular conductive block and the second rectangular conductive block are in contact and conduct electricity with each other. The predetermined upward displacement value of the upper steel plate is greater than the distance between the horizontal bisector of the second rectangular conductive block and the upper edge of the second rectangular conductive block, and less than the distance between the horizontal bisector of the second rectangular conductive block and the upper edge of the rigid insulating plate; the predetermined downward displacement value of the upper steel plate is greater than the distance between the horizontal bisector of the second rectangular conductive block and the lower edge of the second rectangular conductive block, and less than the distance between the horizontal bisector of the second rectangular conductive block and the lower edge of the rigid insulating plate; the predetermined inward displacement value of the upper steel plate is greater than the distance between the vertical bisector of the second rectangular conductive block and the inner edge of the second rectangular conductive block, and less than the distance between the vertical bisector of the second rectangular conductive block and the inner edge of the rigid insulating plate; the predetermined outward displacement value of the upper steel plate is greater than the distance between the vertical bisector of the second rectangular conductive block and the outer edge of the second rectangular conductive block, and less than the distance between the vertical bisector of the second rectangular conductive block and the outer edge of the rigid insulating plate. With the above structure, the symmetry of the upper, lower, inner, and outer sides of the rigid insulating plate is better, and the presetting of the predetermined displacement values of the upper steel plate in the up, down, in, and out directions is more convenient and accurate. Moreover, the size of the opposite sides of the fourth rectangular conductive block and the diameter of the rigid insulating plate can be changed to adjust the predetermined displacement values in the upward, downward, inward, and outward directions, making the applicable range wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present invention when applied to a bridge bearing (marking relevant components; Figures 1-7 the state of the first nut in FIG. is the state when it is not tightened).

[0019] Figure 2 FIG. is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present invention when applied to a bridge bearing (circling A, that is, circling the displacement monitoring and alarm device for bridge bearings of the present invention).

[0020] Figure 3 is Figure 2 an enlarged structural diagram of A in FIG., that is, a schematic structural diagram of the initial state of the displacement monitoring and alarm device for bridge bearings of the present invention.

[0021] Figure 4 FIG. is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present invention when the upper steel plate of the bridge bearing moves leftward relative to the lower steel plate.

[0022] Figure 5It is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present utility model when the upper steel plate of the bridge bearing moves rightward relative to the lower steel plate.

[0023] Figure 6 It is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present utility model when the upper steel plate of the bridge bearing moves downward relative to the lower steel plate.

[0024] Figure 7 It is a schematic structural diagram of the displacement monitoring and alarm device for bridge bearings of the present utility model when the upper steel plate of the bridge bearing moves inward relative to the lower steel plate.

[0025] As shown in the figure:

[0026] 1. Bridge bearing, 11. Upper steel plate, 12. Bearing body, 13. Lower steel plate;

[0027] 2. Upper fixing component, 21. First vertical rod, 22. Second vertical rod, 221. Slide rod through hole, 23. First rectangular conductive block, 24. First connecting plate;

[0028] 3. Lower fixing component, 31. Third vertical rod, 311. Screw through hole, 32. Second rectangular conductive block, 321. Left end face of the second rectangular conductive block, 33. Rigid insulating plate, 331. Upper insulating surface, 332. Lower insulating surface, 333. Inner insulating surface, 334. Outer insulating surface, 34. Second connecting plate, 35. Screw, 351. First external thread, 36. First nut;

[0029] 4. Trigger component, 41. Slide rod, 411. Second external thread, 42. Third rectangular conductive block, 43. First power-off alarm, 44. First wire, 45. Fourth rectangular conductive block, 46. Compression spring, 47. Second power-off alarm, 48. Second wire, 49. Second nut. Specific embodiments

[0030] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these specific embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical means involved in the following specific embodiments of the present utility model can be combined with each other as long as they do not conflict with each other.

[0031] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown.

[0032] The existing bridge bearing 1 generally includes an upper steel plate 11 fixed to the upper part of the bridge, such as the main beam, a bearing body 12 made of rubber and located in the middle height, and a lower steel plate 13 fixed to the lower part of the bridge, such as the pier. The bearing body 12 is also called a rubber cushion block. The displacement of the bridge bearing 1 is essentially the relative displacement between the upper steel plate 11 and the lower steel plate 13, and generally specifically manifested as the displacement of the upper steel plate 11 or the relative displacement of the upper steel plate 11 with respect to the lower steel plate 13, such as bearing void, excessive compression of the bearing, and horizontal misalignment of the bearing, etc.

[0033] The displacement monitoring and alarm device for the bridge bearing of the present utility model includes a power-off alarm and a wire.

[0034] The displacement monitoring and alarm device for the bridge bearing of the present utility model further includes an upper fixing component fixed to the upper steel plate 11, a lower fixing component 3 fixed to the lower steel plate 13, and a triggering component 4 that is in transverse sliding fit with the upper fixing component 2 to disconnect the electrical connection with the upper fixing component 2 or the lower fixing component 3 when the upper steel plate 11 is displaced left, right, up, down, in, or out to a predetermined value, so as to alarm through the power-off alarm. The predetermined value is also called the overlimit or overlimit value.

[0035] The upper fixing component 2 includes a first vertical rod 21 and a second vertical rod 22 whose tops are both fixed to the upper steel plate 11. The first vertical rod 21 is shorter than the second vertical rod 22. The first vertical rod 21 is far from the lower fixing component 3, and the second vertical rod 22 is close to the lower fixing component 3. A first rectangular conductive block 23 is fixed to the bottom end of the first vertical rod 21, and a slide rod through hole 221 is provided at the lower end of the second vertical rod 22.

[0036] The lower fixing component 3 includes a third vertical rod 31 whose bottom end is fixed to the upper steel plate 11. A second rectangular conductive block 32 is fixed to the side of the third vertical rod 31 close to the upper fixing component 2. A rigid insulating plate 33 is sleeved and fixed on the second rectangular conductive block 32. The end face of the rigid insulating plate 33 close to the upper fixing component, that is, the left end face as shown in the figure, namely the left end face 321 of the second rectangular conductive block, has four insulating surfaces of up, down, in, and out. The four insulating surfaces of up, down, in, and out can be respectively called the upper insulating surface 331, the lower insulating surface 332, the inner insulating surface 333, and the outer insulating surface 334.

[0037] The triggering component 4 includes a slide rod 41 that is in transverse sliding fit with the slide rod through hole 221 of the second vertical rod 22. One end of the slide rod 41 far from the lower fixing component 3, such as Figures 1-5 the left end as shown in the figure, is fixed with a third rectangular conductive block 42 that disconnects from the first rectangular conductive block 23 of the upper fixing component 2 when the upper steel plate 11 is displaced in the direction close to the lower fixing component, such as Figures 1-5 rightward as shown in the figure, to cut off the power supply and alarm through the first power-off alarm. One end of each of the first wires 44 connected to both ends of the first power-off alarm 43 is electrically connected to the first rectangular conductive block 23 and the third rectangular conductive block 42 respectively. The slide rod 41 is also called a transverse slide rod.

[0038] One end of the sliding rod 41 close to the lower fixing component 3, such as Figures 1-5 shown at the right end in the figure, is fixed with a second rectangular conductive block 32 that disconnects from the lower fixing component 3 and cuts off the power supply when the upper steel plate 11 moves away from the lower fixing component 3 in the direction shown in the figure, such as Figures 1-5 shown at the left in the figure, and alarms through the second power-off alarm. Moreover, when the upper steel plate 11 moves upward, downward, inward or outward, it disconnects from the second rectangular conductive block 32 and respectively abuts against the upper, lower, inner and outer insulating surfaces of the rigid insulating plate 33, cutting off the power supply and alarming through the second power-off alarm. A fourth rectangular conductive block 45. A compression spring 46 is movably sleeved on the sliding rod 41. One end of it abuts against the second vertical rod 22, and the other end abuts against the fourth rectangular conductive block 45. One end of each of the second wires 48 connected to both ends of the second power-off alarm 47 is electrically connected to the second rectangular conductive block 32 and the fourth rectangular conductive block 45 or the conductive sliding rod 41 respectively. The compression spring 46 is also called a compression spring or a support spring. The first vertical rod 21 and the second vertical rod 22 are parallel to each other and are both fixed to the upper steel plate 11 through a first connecting plate 24. The first vertical rod 21 and the second vertical rod 22 are in a vertical state in the initial state.

[0039] The third vertical rod 31 is fixed to the lower steel plate 13 through a second connecting plate 34. The third vertical rod 31 is in a vertical state in the initial state.

[0040] There is a screw through hole 311 at the upper end of the third vertical rod 31. A screw 35 passes through the screw through hole 311. One end of the screw 35 close to the upper fixing component 2, such as Figures 1-5 shown at the left end in the figure, is fixed to the second rectangular conductive block 32. One end of the screw 35 far from the upper fixing component 2, such as Figures 1-5 shown at the right end in the figure, has a first external thread 351. A first nut 36 is screwed onto the first external thread 351 and tightened with the third vertical rod 31 (the tightened state is not shown in the figure). The screw through hole 311 can also be replaced by a threaded hole. The left end of the screw 35 is fixed to the second rectangular conductive block 32, such as it can be fixed by interference fit in the central blind hole of the second rectangular conductive block 32 and then spot-welded. Then, the screw 35 is screwed from left to right to a predetermined position. When the top and bottom surfaces of the second rectangular conductive block 32 are both in a horizontal state, the first nut 36 is tightened to fix the first nut 36 to the third vertical rod 31.

[0041] The end face of the second rectangular conductive block 32 close to the upper fixing component 2, such as Figure 6 、 Figure 7 shown at the left end in the figure, is flush with the upper, lower, inner and outer insulating surfaces of the rigid insulating plate 33, namely the upper insulating surface 331, the lower insulating surface 332, the inner insulating surface 333 and the outer insulating surface 334.

[0042] One end of the sliding rod 41 far from the lower fixing component 3, such as Figures 1-5The left end shown in the figure has a second external thread 411, on which a second nut 49 is screwed, and the second nut 49 is fixed to the third rectangular conductive block 42. The right end of the first rectangular conductive block 23 is fixed to the second vertical rod 22. The length of the third rectangular conductive block 42 is shorter than that of the first rectangular conductive block 23. In the initial state, the third rectangular conductive block 42 is located in the middle of the length of the first rectangular conductive block 23 and is in contact and conductive with each other. The predetermined value of the leftward displacement of the upper steel plate 11 is greater than the distance between the right end face of the third rectangular conductive block 42 in the initial state and the second vertical rod 22 in the initial state. The predetermined value of the rightward displacement of the upper steel plate 11 is greater than the distance between the right end face of the third rectangular conductive block 42 in the initial state and the left end face of the first rectangular conductive block 23 in the initial state.

[0043] The rigid insulating plate 33 is in the shape of an inner square and an outer circle, and the upper, lower, inner, and outer sides are all equal. The cross-sectional shapes of the fourth rectangular conductive block 45 and the second rectangular conductive block 32 are both square and their sizes are equal. In the initial state, the fourth rectangular conductive block 45 and the second rectangular conductive block 32 are in contact and conductive with each other. The predetermined value of the upward displacement of the upper steel plate 11 is greater than the distance between the horizontal bisector of the second rectangular conductive block 32 and the upper edge of the second rectangular conductive block 32, and less than the distance between the horizontal bisector of the second rectangular conductive block 32 and the upper edge of the rigid insulating plate 33. The predetermined value of the downward displacement of the upper steel plate 11 is greater than the distance between the horizontal bisector of the second rectangular conductive block 32 and the lower edge of the second rectangular conductive block 32, and less than the distance between the horizontal bisector of the second rectangular conductive block 32 and the lower edge of the rigid insulating plate 33. The predetermined value of the inward displacement of the upper steel plate 11 is greater than the distance between the vertical bisector of the second rectangular conductive block 32 and the inner edge of the second rectangular conductive block 32, and less than the distance between the vertical bisector of the second rectangular conductive block 32 and the inner edge of the rigid insulating plate 33. The predetermined value of the outward displacement of the upper steel plate 11 is greater than the distance between the vertical bisector of the second rectangular conductive block 32 and the outer edge of the second rectangular conductive block 32, and less than the distance between the vertical bisector of the second rectangular conductive block 32 and the outer edge of the rigid insulating plate 33.

[0044] The first power-off alarm 43 can be fixed on the first vertical rod 21, or the second vertical rod 22, or the top surface of the first rectangular conductive block 23, etc. The second power-off alarm 47 can be fixed on the third vertical rod 31, or the second vertical rod 22, etc. The fixing described here can be achieved by bonding with insulating glue. The drawings are only schematic. It is not difficult to understand that the wires are flexible wires, such as the first wire 44 and the second wire 48 are both flexible wires; the length of the wires is determined by the length required to satisfy the horizontal sliding of the trigger assembly 4.

[0045] The rigid insulating board 33 is an insulating board made of rigid insulating materials. The so-called rigid insulating materials are also called hard insulating materials, such as marble, ceramics, hard plastics such as rigid polyurethane foam plastics, plexiglass, polytetrafluoroethylene, polyimide, and ABS, etc.

[0046] The power-off alarm is a commercially available product, that is, a commercially available power-off alarm. For example, both the first power-off alarm 43 and the second power-off alarm 47 are commercially available products, which generally include a housing, a battery inside the housing, a signal transmitter, and a circuit board including a power-off alarm module. The power-off signal or the open-circuit signal is transmitted by the transmitter to an intelligent terminal such as a computer, and the bridge maintenance personnel can handle it in time after receiving the alarm information.

[0047] For the above-mentioned fixation, except for the parts that need to be insulated and are fixed by insulating glue bonding, the rest of the fixation can be welding, screw connection, bolt and nut connection, interference fit, and strong glue bonding, etc.

[0048] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 。

[0049] When the upper steel plate 11 of the bridge bearing 1 of the bridge seat displacement monitoring and alarm device of the present utility model moves left, right, up, down, in or out relative to the lower steel plate 12, the working principle of the power-off alarm is as follows:

[0050] Figure 1 、 Figure 2 and Figure 3 show the initial state after the bridge seat displacement monitoring and alarm device of the present utility model is installed. Among them, the third rectangular conductive block 42 is in contact with the first rectangular conductive block 23 to conduct electricity and form an electric circuit or an electric path, and the first power-off alarm 43 does not alarm; the fourth rectangular conductive block 45 is in contact with the second rectangular conductive block 32 to conduct electricity and form an electric circuit or an electric path, and the second power-off alarm 47 does not alarm.

[0051] As Figure 4 shown, when the upper steel plate 11 moves away from the lower fixing component 3 relative to the lower steel plate 13 in the direction such as Figure 4When the left side shown undergoes displacement, when the second vertical rod 22 and the first vertical rod 21 drive the first rectangular conductive block 23 to slide horizontally leftward along the sliding rod 41 until being limited by the third rectangular conductive block 42, and then drive the third rectangular conductive block 42 and the sliding rod 41 to move leftward together, the fourth rectangular conductive block 45 is driven by the sliding rod 41 to disengage from the second rectangular conductive block 32 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the second power-off alarm 47 gives an alarm. It is not difficult to understand that the disengagement of the fourth rectangular conductive block 45 from the second rectangular conductive block 32 means that the right end face of the fourth rectangular conductive block 45 axially disengages from the left end face 321 of the second rectangular conductive block.

[0052] As Figure 5 shown, when the upper steel plate 11 moves relative to the lower steel plate 13 in the direction close to the lower fixing assembly 3, that is Figure 5 shown, when displacement occurs on the right side shown, the second vertical rod 22 and the first vertical rod 21 drive the first rectangular conductive block 23 to slide horizontally rightward along the sliding rod 41 and compress the compression spring 46 until the first rectangular conductive block 23 disengages from the third rectangular conductive block 42 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the first power-off alarm 43 gives an alarm. It is not difficult to understand that the disengagement of the first rectangular conductive block 23 from the third rectangular conductive block 42 means that the left end face of the first rectangular conductive block 23 axially disengages from the right end face of the third rectangular conductive block 42.

[0053] See Figure 6 ( Figure 6 The display shows that the upper steel plate 11 moves downward relative to the lower steel plate 13, while this movement is that the upper steel plate 11 moves upward relative to the lower steel plate 13, only the directions are exactly opposite, so reference can be made to Figure 6 ) When the upper steel plate 11 moves upward, which is also called being disengaged, the second vertical rod 22 drives the sliding rod 41 and the fourth rectangular conductive block 45 to move vertically upward as a whole. Of course, the first vertical rod 21 also moves vertically upward synchronously until the fourth rectangular conductive block 45 disengages from the second rectangular conductive block 32 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the second power-off alarm 47 gives an alarm. At this time, the upper part of the right end face of the fourth rectangular conductive block 45 abuts against the upper insulating surface 331 of the left end face of the rigid insulating plate 33.

[0054] As Figure 6 shown, when the upper steel plate 11 moves downward relative to the lower steel plate 13, which is also called excessive compression, the second vertical rod 22 drives the sliding rod 41 and the fourth rectangular conductive block 45 to move vertically downward as a whole. Of course, the first vertical rod 21 also moves vertically downward synchronously until the fourth rectangular conductive block 45 disengages from the second rectangular conductive block 32 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the second power-off alarm 47 gives an alarm. At this time, the lower part of the right end face of the fourth rectangular conductive block 45 abuts against the lower insulating surface 332 of the left end face of the rigid insulating plate 33.

[0055] As Figure 7As shown, when the upper steel plate 11 moves inward relative to the lower steel plate 13, the second vertical rod 22 and the first vertical rod 21 drive the slide rod 41 and the fourth rectangular conductive block 45 to move horizontally, also known as moving inward horizontally. Until the fourth rectangular conductive block 45 disengages from the second rectangular conductive block 32 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the second power-off alarm 47 alarms. At this time, the inner edge of the right end face part of the fourth rectangular conductive block 45 abuts against the inner insulating surface 333 of the left end face of the rigid insulating plate 33.

[0056] See Figure 7 ( Figure 7 The display shows that the upper steel plate 11 moves inward relative to the lower steel plate 13, while this movement is that the upper steel plate 11 moves outward relative to the lower steel plate 13, just in the opposite direction. So it can be referred to Figure 7 ) When the upper steel plate 11 moves outward, the second vertical rod 22 and the first vertical rod 21 drive the slide rod 41 and the fourth rectangular conductive block 45 to move horizontally, also known as moving outward horizontally. Until the fourth rectangular conductive block 45 disengages from the second rectangular conductive block 32 and the power is cut off, that is, the electrical circuit or electrical path is no longer formed, and the second power-off alarm 47 alarms. At this time, the inner edge of the right end face part of the fourth rectangular conductive block 45 abuts against the outer insulating surface 334 or the front insulating surface of the left end face of the rigid insulating plate 33.

[0057] It is not difficult to understand that when the upper steel plate 11 disengages upward, downward, inward and outward relative to the lower steel plate 13 as described above, the disengagement of the fourth rectangular conductive block 45 from the second rectangular conductive block 32 at this time all refers to the radial disengagement of the right end face of the fourth rectangular conductive block 45 from the left end face 321 of the second rectangular conductive block.

[0058] The structures described above are allowed to have variations. For example:

[0059] The shapes, sizes, lengths, heights, etc. of the components are all allowed to vary according to actual needs, such as the expansion of the displacement preset value.

[0060] The first vertical rod and the second vertical rod of the upper fixing component can also be an integral body, with the first vertical rod part being short and the second vertical rod part being long.

[0061] All conductive blocks can also be other shapes besides rectangular, such as circular cross-section, other polygons besides rectangular, spherical and hemispherical, etc.

[0062] The rigid insulating plate described above can also be in the shape of a square outside and a circle inside that matches the circular second conductive block.

[0063] The first vertical rod and the second vertical rod can also be directly fixed to the bottom surface of the upper steel plate without passing through the first connecting plate. The third vertical rod can also be directly fixed to the top surface of the lower steel plate without passing through the second connecting plate.

[0064] Alternatively, the screw rod may not be provided and the second rectangular conductive block may be directly fixed to the third vertical rod. Alternatively, the second external thread and the second nut may not be provided and the third rectangular conductive block may be directly fixed to the sliding rod.

[0065] And so on. Of course, the structures shown in the above-described figures are preferably selected.

[0066] The lateral sliding is also called horizontal sliding.

[0067] The components, structures, quantities, etc. not marked above are not shown in the figures; some components are not marked. The drawings are only schematic. If there are inconsistencies between the drawings and the written description or among the drawings themselves, the written description shall prevail.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bridge support displacement monitoring and alarm device, comprising a power failure alarm and a conductor, characterized in that: It also includes an upper fixing component fixed to the upper steel plate, a lower fixing component fixed to the lower steel plate, and a trigger component that cooperates with the upper fixing component in a transverse sliding manner to disconnect the electrical connection with the upper fixing component or the lower fixing component when the upper steel plate is displaced to the left, right, up, down, inward or outward relative to the lower steel plate to a predetermined value so as to alarm via a power off alarm.

2. The bridge support displacement monitoring and alarm device according to claim 1 is characterized in that: The upper fixed component includes a first vertical rod and a second vertical rod, both of which are fixed to the upper steel plate at the top. The first vertical rod is shorter than the second vertical rod, the first vertical rod is far away from the lower fixed component, and the second vertical rod is close to the lower fixed component; a first rectangular conductive block is fixed to the bottom end of the first vertical rod, and a sliding rod through hole is provided at the lower end of the second vertical rod.

3. The bridge support displacement monitoring and alarm device according to claim 2 is characterized in that: The lower fixed component includes a third vertical rod whose bottom end is fixed to the lower steel plate. A second rectangular conductive block is fixed to the side of the third vertical rod close to the upper fixed component. A rigid insulating plate is sleeved and fixed on the second rectangular conductive block. The rigid insulating plate has four insulating surfaces at the end face close to the upper fixed component: upper, lower, inner and outer.

4. The bridge support displacement monitoring and alarm device according to claim 3 is characterized in that: The trigger assembly includes a slide bar that is laterally slidably matched with the slide bar through hole of the second vertical rod, and a third rectangular conductive block is fixed to one end of the slide bar away from the lower fixed assembly, which is disengaged from the first rectangular conductive block of the upper fixed assembly when the upper steel plate moves toward the lower fixed assembly, and the power is cut off and an alarm is given by the first power-off alarm, and one end of each first wire connected to both ends of the first power-off alarm is electrically connected to the first rectangular conductive block and the third rectangular conductive block respectively; A fourth rectangular conductive block is fixed to one end of the slide bar close to the lower fixed component, which disengages from the lower fixed component when the upper steel plate moves away from the lower fixed component and alarms through the second power-off alarm, and disengages from the second rectangular conductive block and abuts against the upper, lower, inner and outer four insulating surfaces of the rigid insulating plate respectively to cut off power and alarm through the second power-off alarm when the upper steel plate moves upward, downward, inward or outward, a compression spring is movably fitted on the slide bar, one end of which abuts against the second vertical rod and the other end abuts against the fourth rectangular conductive block, and one end of the second wire connected to the two ends of the second power-off alarm is electrically connected to the second rectangular conductive block and the fourth rectangular conductive block or the conductive slide bar respectively.

5. The bridge support displacement monitoring and alarm device according to claim 3 is characterized in that: The first vertical rod and the second vertical rod are parallel to each other and are both fixed to the upper steel plate via a first connecting plate. The first vertical rod and the second vertical rod are both in a vertical state in their initial states.

6. The bridge support displacement monitoring and alarm device according to claim 3 is characterized in that: The third vertical rod is fixed to the lower steel plate via a second connecting plate, and the initial state of the third vertical rod is a vertical state.

7. The bridge support displacement monitoring and alarm device according to claim 3 is characterized in that: A screw hole is provided at the upper end of the third vertical rod, and a screw passes through the screw hole. One end of the screw close to the upper fixing component is fixed to the second rectangular conductive block, and one end of the screw away from the upper fixing component has a first external thread. A first nut is screwed on the first external thread and fastened to the third vertical rod.

8. The bridge support displacement monitoring and alarm device according to claim 3 is characterized in that: The end surface of the second rectangular conductive block close to the upper fixing assembly is flush with the upper, lower, inner and outer insulating surfaces of the rigid insulating plate.

9. The bridge support displacement monitoring and alarm device according to claim 4 is characterized in that: The end of the sliding rod away from the lower fixed component has a second external thread, and a second nut is screwed on the second external thread, and the second nut is fixed to the third rectangular conductive block; the right end of the first rectangular conductive block is fixed to the second vertical rod; the length of the third rectangular conductive block is shorter than the length of the first rectangular conductive block, and the third rectangular conductive block in the initial state is located in the middle of the length of the first rectangular conductive block and contacts with each other for conduction, and the predetermined value of the upper steel plate displacement to the left is greater than the distance between the right end face of the third rectangular conductive block in the initial state to the second vertical rod in the initial state; the predetermined value of the upper steel plate displacement to the right is greater than the distance between the right end face of the third rectangular conductive block in the initial state to the left end face of the first rectangular conductive block in the initial state.

10. The bridge support displacement monitoring and alarm device according to claim 4 is characterized in that: The shape of the rigid insulating plate is an inner square and an outer circle, and the upper, lower, inner and outer four sides are equal. The cross-sectional shapes of the fourth rectangular conductive block and the second rectangular conductive block are both square and the sizes of the two are equal. In the initial state, the fourth rectangular conductive block and the second rectangular conductive block are in contact with each other for conduction; the predetermined value of the upward displacement of the upper steel plate is greater than the distance between the horizontal bisector of the second rectangular conductive block and the upper edge of the second rectangular conductive block, and is less than the distance between the horizontal bisector of the second rectangular conductive block and the upper edge of the rigid insulating plate; the predetermined value of the downward displacement of the upper steel plate is greater than the distance between the horizontal bisector of the second rectangular conductive block and the first rectangular conductive block. The predetermined value of the inward displacement of the upper steel plate is greater than the distance between the vertical bisector of the second rectangular conductive block and the inner edge of the second rectangular conductive block, and is less than the distance between the vertical bisector of the second rectangular conductive block and the inner edge of the rigid insulating plate; the predetermined value of the outward displacement of the upper steel plate is greater than the distance between the vertical bisector of the second rectangular conductive block and the outer edge of the second rectangular conductive block, and is less than the distance between the vertical bisector of the second rectangular conductive block and the outer edge of the rigid insulating plate.

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