A support with deformation and stress state monitoring function

Abstract

The present invention discloses a bearing with deformation and stress state monitoring function, the bearing includes a connecting plate, a lower bearing wall, a wedge block, a spherical crown plate, an upper bearing plate and a plurality of sliding plates, and is also provided with a ruler system, a spring force measuring system and a corrugated plate force measuring system. The bearing realizes the measurement of the slip amount through a ruler; the bearing deformation and bearing pressure generated by the vertical compression and horizontal shear force of the bearing are monitored through springs and corrugated plates, thereby realizing the measurement of horizontal shear force, vertical pressure and vertical tension during the service of the bearing. The present invention can observe the deformation and stress state of the bearing during service in real time, improve the safety of the structure, and has the characteristics of low cost, excellent weather resistance, simple structure, safety and reliability.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering supports, in particular to a support with deformation and stress state monitoring functions. Background Art

[0002] In civil engineering structures, especially in building structures and bridge structures, steel bearings are used to fix the upper and lower components of the structure, and to release the node bending moment through the spherical crown plate. Steel bearings can be divided into fixed bearings, one-way sliding bearings and two-way sliding bearings. As a key boundary component of an engineering structure, the health of the bearing during its service directly affects the safety, usability and comfort of the structure, and the health of the bearing is closely related to its stress and deformation state. Therefore, it is of great significance to realize real-time monitoring and evaluation of the bearing. At present, the methods used to measure the stress of the bearing are mainly based on sensor monitoring technology, and most of the technologies are used to measure the vertical stress of the bearing. The present invention aims to propose a new force measuring bearing based on the deformation principle to realize real-time monitoring of the bearing when it is subjected to shear, tension or compression. Summary of the invention

[0003] The purpose of the present invention is to improve the deficiencies of the existing bearings, thereby providing a bearing with deformation and stress state monitoring functions, and solving the problem of multi-directional stress monitoring of the bearing during service.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A support with deformation and stress state monitoring functions, comprising:

[0006] A connecting plate, used for fixed connection with the bearing structure below, and a scale system is arranged on the connecting plate;

[0007] The lower support wall is attached to and fixedly connected to the connecting plate at the lower side, the interior of the lower support wall is hollowed out to form a cavity, and the upper parts of the left and right sides extend outward to form strip-shaped protrusions;

[0008] A horizontally movable wedge block is located in the cavity of the lower support wall, a horizontal sliding plate is arranged between the lower side of the horizontally movable wedge block and the connecting plate, a vertical sliding plate is arranged between the front and rear sides and the lower support wall, a space is left between the right side and the lower support wall, and the left side surface and the upper side surface are inclined surfaces;

[0009] A force measuring wedge block is located to the left of the horizontally movable wedge block in the cavity of the lower support wall, a vertical sliding plate is arranged between the left side of the force measuring wedge block and the lower support wall, the right side surface is an inclined surface corresponding to the left side surface of the horizontally movable wedge block, and an inclined sliding plate is arranged between the horizontally movable wedge block, and a spring force measuring system is arranged on the lower side;

[0010] A vertically movable wedge block is located above the horizontally movable wedge block in the cavity of the lower support wall, and a spherical crown-shaped groove is provided on the upper surface of the vertically movable wedge block; vertical sliding plates are provided between the front, rear, left and right sides of the vertically movable wedge block and the lower support wall, and the lower side surface is an inclined surface corresponding to the upper side surface of the horizontally movable wedge block, and an inclined sliding plate is provided between the vertically movable wedge block and the horizontally movable wedge block;

[0011] A spherical crown plate is located in a spherical crown-shaped groove above the vertically movable wedge-shaped block, and a rotating sliding plate is arranged between the two;

[0012] An upper support plate is located above the spherical crown plate, and is used to be fixedly connected to the target structure above; the left and right sides of the upper support plate extend downward and inward to form a strip groove, and the strip groove matches the strip protrusion of the lower support wall, and the strip groove corresponds to the lower contact surface and side contact surface of the strip protrusion. A corrugated plate force measuring system is set.

[0013] Further, the scale system includes a scale support, a measuring scale and a pointer, which are used to measure the slippage of the support;

[0014] The scale support is fixedly connected to the connecting plate; the measuring scale is fixedly connected to the scale support, and the pointer is fixedly installed on the upper support plate; when the support undergoes unidirectional slip, the pointer moves with the upper support plate, and the position indicated by the pointer is the slip amount, which reflects the vertical deformation of the support.

[0015] Further, the spring force measuring system comprises a spring guide rod, a spring unit and a spring sleeve;

[0016] The upper end of the spring sleeve is fixedly connected to the force measuring wedge block, and the lower end is suspended to retain a sufficient movement stroke; the lower end of the spring guide rod is fixedly connected to the connecting plate, and the upper end of the spring guide rod is suspended to retain a sufficient movement stroke; the spring unit is sleeved on the spring guide rod, the upper end is located in the spring sleeve, and the two ends respectively abut against the bottom of the force measuring wedge block and the top of the connecting plate;

[0017] The number of the spring units is at least 6; the spring sleeves are used in conjunction with the spring units, and the number of the spring sleeves is the same as the spring units; and the spring units are evenly and symmetrically arranged along the bottom of the force measuring wedge block.

[0018] Furthermore, the corrugated plate force measuring system includes a corrugated plate and a side strip plate; the corrugated plate is arranged on the side contact surface and the lower contact surface of the strip-shaped groove of the upper support plate corresponding to the strip-shaped protrusion of the lower support wall, and the side strip plate covers and is fixed to the surface of the corrugated plate so as to encapsulate the corrugated plate in the upper support plate.

[0019] Preferably, the number of the corrugated plates provided is at least 4.

[0020] Specifically, the spring unit and the corrugated plate are both elastic units. The force direction and deformation size of the support can be determined according to the deformation of the elastic element, and the force on the support can be calibrated at the same time; the deformation of the spring unit is used to reflect the vertical force, and the deformation of the corrugated plate is used to reflect the shear force; the scale system and the pointer together constitute a slip measurement system, which has the function of measuring the unidirectional slip displacement of the support.

[0021] Furthermore, the top outer edge of the upper support plate is fixedly connected to the target structure by welding rods.

[0022] Furthermore, the cross-sectional shape of the connecting plate is rectangular; the bottom of the connecting plate is fixedly connected to the bearing structure by a plurality of high-strength bolts. The bearing structure is provided with a bolt sleeve, and the high-strength bolt is sleeved in the bolt sleeve; the high-strength bolts are evenly and symmetrically arranged along the cross-sectional shape of the connecting plate; and the number of high-strength bolts and bolt sleeves is at least 8.

[0023] The support with displacement adjustment function of the present invention has the following beneficial effects:

[0024] 1. The present invention utilizes the linear elastic characteristics of the elastic element to convert force and displacement, thereby monitoring the stress and deformation state of the support during service, and can calibrate the stress of the elastic element according to the displacement characteristics. It has the characteristics of good durability, stable performance, easy replacement and monitoring, etc. At the same time, the system as a whole belongs to a passive monitoring system, has natural stability characteristics, and has simple construction technology and high safety;

[0025] 2. The present invention adopts a wedge block to realize the vertical force conversion of the support, which has the characteristics of simple structure, convenient processing and easy assembly; each component is only connected by a sliding plate, which reduces the difficulty of installation and maintenance of the device and has high safety;

[0026] 3. According to the specific requirements of the bearing design capacity, the components of the force measurement system can be uniformly designed and mass-produced;

[0027] 4. The present invention can realize real-time stress and deformation state monitoring of the support. The monitoring accuracy is achieved by changing the number of elastic elements and the size of the stiffness. The stress and deformation monitoring display can be calibrated by a mechanical pointer or by setting a variable resistor to realize digital display. The digital display data can be imported into the data acquisition and transmission system, which is conducive to the realization of full life management of the structure.

[0028] 5. The present invention can determine the sliding deformation of the support according to the position of the pointer pointing to the scale system; by pushing the pointer, the support can be reset, which is helpful to solve the problem of the support's deviation during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the support with deformation and stress state monitoring function of the present invention;

[0030] Figure 2 for Figure 1 Section view along AA direction;

[0031] Figure 3 for Figure 1 Section along BB direction;

[0032] Figure 4 yes Figure 1 Schematic diagram of the spring force measurement system at point b in the middle;

[0033] Figure 5 It is a schematic diagram of the scale measurement system of the support;

[0034] Figure 6 yes Figure 1 Schematic diagram of the corrugated plate force measurement system at point a.

[0035] Description of the figure number:

[0036] 1-target structure; 2-bearing structure; 3-upper bearing plate; 30-strip groove; 41-horizontal sliding plate; 42-rotating sliding plate; 43-oblique sliding plate; 44-horizontal sliding plate; 45-vertical sliding plate; 5-spherical crown plate; 6-vertical moving wedge block; 7-horizontal moving wedge block; 8-lower bearing wall; 80-strip protrusion; 9-force measuring wedge block; 10-spring force measuring system; 100-spring guide rod; 11-spring unit; 12-spring sleeve; 13-connecting plate; 14-side strip plate; 15-corrugated plate force measuring system; 150-corrugated plate; 16-welding rod; 17-high-strength bolt; 18-bolt sleeve; 19-ruler system; 191-ruler support; 192-measuring ruler; 20-pointer. DETAILED DESCRIPTION

[0037] The following is a further detailed description of a support with deformation and stress state monitoring function of the present invention in conjunction with the accompanying drawings. It should be understood that the following embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the embodiments of the present invention, the orientation descriptions involved, such as the orientations or positional relationships indicated by horizontal, vertical, oblique, inside, outside, left, right, front, and back, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] like Figures 1 to 3As shown, a support with deformation and stress state monitoring function of the present invention comprises:

[0039] A connecting plate 13, used for fixedly connecting to the supporting structure 2 below, and a scale system 19 is provided on the connecting plate 13;

[0040] The lower support wall 8 is attached to and fixedly connected to the connecting plate 13 at its lower side, the interior of the lower support wall 8 is hollowed out to form a cavity, and the upper parts of the left and right sides extend outward to form strip-shaped protrusions 80;

[0041] The horizontally movable wedge block 7 is located in the cavity of the lower support wall 8. A horizontal sliding plate 44 is arranged between the lower side of the horizontally movable wedge block 7 and the connecting plate 13. A vertical sliding plate 45 is arranged between the front and rear sides and the lower support wall 8. A space is left between the right side and the lower support wall 8, and the left side surface and the upper side surface are inclined surfaces.

[0042] The force measuring wedge block 9 is located on the left side of the horizontal moving wedge block 7 in the cavity of the lower support wall 8, a vertical sliding plate 45 is arranged between the left side of the force measuring wedge block 9 and the lower support wall 8, the right side surface is an inclined surface corresponding to the left side surface of the horizontal moving wedge block 7, and an inclined sliding plate 43 is arranged between the force measuring wedge block 9 and the horizontal moving wedge block 7, and a spring force measuring system 10 is arranged on the lower side;

[0043] The vertically movable wedge block 6 is located above the horizontally movable wedge block 7 in the cavity of the lower support wall 8, and a spherical crown-shaped groove is provided on the upper surface of the vertically movable wedge block 6; vertical sliding plates 45 are provided between the front, rear, left and right sides of the vertically movable wedge block 6 and the lower support wall 8, and the lower side surface is an inclined surface corresponding to the upper side surface of the horizontally movable wedge block 7, and an inclined sliding plate 43 is provided between the vertically movable wedge block 6 and the horizontally movable wedge block 7;

[0044] The spherical crown plate 5 is located in a spherical crown-shaped groove above the vertically movable wedge block 6, and a rotating sliding plate 42 is arranged between the two;

[0045] The upper support plate 3 is located above the spherical crown plate 5, and the upper support plate 3 is used to be fixedly connected to the target structure 1 above; the left and right sides of the upper support plate 3 extend downward and inward to form a strip groove 30, and the strip groove 30 matches the strip protrusion 80 of the lower support wall 8, and the lower contact surface and side contact surface of the strip groove 30 corresponding to the strip protrusion 80 are both provided with a corrugated plate force measuring system 15.

[0046] Further, such as Figure 5 As shown, the scale system 19 includes a scale support 191, a measuring scale 192 and a pointer 20, which are used to measure the slippage of the support;

[0047] The scale support 191 is fixedly connected to the connecting plate 13; the measuring scale 192 is fixedly connected to the scale support 191, and the pointer 20 is fixedly installed on the upper support plate 3; when the support undergoes unidirectional slip, the pointer 20 moves with the upper support plate 3, and the position indicated by the pointer 20 is the slip amount, which reflects the vertical deformation of the support.

[0048] Further, such as Figure 4 As shown, the spring force measuring system 10 includes a spring guide rod 100, a spring unit 11 and a spring sleeve 12;

[0049] The upper end of the spring sleeve 12 is fixedly connected to the force measuring wedge block 9, and the lower end is suspended to retain a sufficient movement stroke; the lower end of the spring guide rod 100 is fixedly connected to the connecting plate 13, and the upper end of the spring guide rod 100 is suspended to retain a sufficient movement stroke; the spring unit 11 is sleeved on the spring guide rod 100, the upper end is located in the spring sleeve 12, and the two ends respectively abut against the bottom of the force measuring wedge block 9 and the top of the connecting plate 13;

[0050] The number of the spring units 11 is at least 6; the spring sleeves 12 are used in conjunction with the spring units 11 , and the number of the spring sleeves 12 is the same as the spring units 11 ; and the spring units 11 are evenly and symmetrically arranged along the bottom of the force measuring wedge block 9 .

[0051] Further, such as Figure 6 As shown, the corrugated plate force measuring system 15 includes a corrugated plate 150 and a side strip plate 14; the corrugated plate 150 is arranged on the side contact surface and the lower contact surface of the strip groove 30 of the upper support plate 3 corresponding to the strip protrusion 80 of the lower support wall 8, and the side strip plate 14 is covered and fixed to the surface of the corrugated plate 150 by gluing, welding, etc., so that the corrugated plate 150 is encapsulated in the upper support plate 3; the number of the corrugated plates 150 is at least 4.

[0052] Specifically, the spring unit 11 and the corrugated plate 150 are both elastic units. The force direction and deformation size of the support can be determined according to the deformation of the elastic element, and the force on the support can be calibrated at the same time; the deformation of the spring unit 11 is used to reflect the vertical force, and the deformation of the corrugated plate 150 is used to reflect the shear force; the scale system 19 is a slip measurement system, which has the function of measuring the unidirectional slip displacement of the support.

[0053] Furthermore, the top outer edge of the upper support plate 3 is fixedly connected to the target structure 1 via a welding rod 16 .

[0054] Furthermore, the cross-sectional shape of the connecting plate 13 is rectangular; the bottom of the connecting plate 13 is fixedly connected to the bearing structure 2 by a plurality of high-strength bolts 17; a bolt sleeve 18 is preset in the bearing structure 2, and the high-strength bolt 17 is sleeved in the bolt sleeve 18; in this embodiment, the high-strength bolts 17 are evenly and symmetrically arranged along the cross-sectional shape of the connecting plate 13, and the number of high-strength bolts 17 and bolt sleeves 18 is at least 8.

[0055] The present invention provides a spring unit 11 and a corrugated plate 150 to monitor the bearing deformation and bearing pressure caused by the vertical compression and horizontal shear force of the bearing, respectively, so as to realize the measurement of horizontal shear force, vertical pressure and vertical tension of the bearing during service, and the force measurement accuracy can be adjusted by adjusting the stiffness parameter of the elastic unit; at the same time, the slip measurement is realized by using a single mechanical device of the ruler system 19. The present invention can observe the deformation and stress state of the bearing during service in real time, improve the safety of the structure, and has the characteristics of low cost, excellent weather resistance, simple structure, safety and reliability, etc.

Claims

1. A support with deformation and stress state monitoring function, characterized in that: include: A connecting plate, used for fixed connection with the bearing structure below, and a scale system is arranged on the connecting plate; The lower support wall is attached to and fixedly connected to the connecting plate at the lower side, the interior of the lower support wall is hollowed out to form a cavity, and the upper parts of the left and right sides extend outward to form strip-shaped protrusions; A horizontally movable wedge block is located in the cavity of the lower support wall, a horizontal sliding plate is arranged between the lower side of the horizontally movable wedge block and the connecting plate, a vertical sliding plate is arranged between the front and rear sides and the lower support wall, a space is left between the right side and the lower support wall, and the left side surface and the upper side surface are inclined surfaces; A force measuring wedge block is located to the left of the horizontally movable wedge block in the cavity of the lower support wall, a vertical sliding plate is arranged between the left side of the force measuring wedge block and the lower support wall, the right side surface is an inclined surface corresponding to the left side surface of the horizontally movable wedge block, and an inclined sliding plate is arranged between the horizontally movable wedge block, and a spring force measuring system is arranged on the lower side; A vertically movable wedge block is located above the horizontally movable wedge block in the cavity of the lower support wall, and a spherical crown-shaped groove is provided on the upper surface of the vertically movable wedge block; vertical sliding plates are provided between the front, rear, left and right sides of the vertically movable wedge block and the lower support wall, and the lower side surface is an inclined surface corresponding to the upper side surface of the horizontally movable wedge block, and an inclined sliding plate is provided between the vertically movable wedge block and the horizontally movable wedge block; A spherical crown plate is located in a spherical crown-shaped groove above the vertically movable wedge-shaped block, and a rotating sliding plate is arranged between the two; An upper support plate is located above the ball crown plate, and is used to be fixedly connected to the target structure above; the left and right sides of the upper support plate extend downward and buckle inward to form a strip groove, and the strip groove matches the strip protrusion of the lower support wall, and the strip groove is provided with a corrugated plate force measuring system corresponding to the lower contact surface and the side contact surface of the strip protrusion; The spring force measuring system comprises a spring guide rod, a spring unit and a spring sleeve; The upper end of the spring sleeve is fixedly connected to the force measuring wedge block, and the lower end is suspended to retain a sufficient movement stroke; the lower end of the spring guide rod is fixedly connected to the connecting plate, and the upper end of the spring guide rod is suspended to retain a sufficient movement stroke; the spring unit is sleeved on the spring guide rod, the upper end is located in the spring sleeve, and the two ends respectively abut against the bottom of the force measuring wedge block and the top of the connecting plate; The corrugated plate force measuring system includes a corrugated plate and a side strip plate; the corrugated plate is arranged on the side contact surface and the lower contact surface of the strip-shaped groove of the upper support plate corresponding to the strip-shaped protrusion of the lower support wall, and the side strip plate covers and is fixed to the surface of the corrugated plate so as to encapsulate the corrugated plate in the upper support plate.

2. The support with deformation and stress state monitoring function according to claim 1 is characterized in that: The scale system includes a scale support, a measuring scale and a pointer; The scale support is fixedly connected to the connecting plate; the measuring scale is fixedly connected to the scale support, and the pointer is fixedly installed on the upper support plate.

3. The support with deformation and stress state monitoring function according to claim 1 is characterized in that: The number of the spring units is at least 6; the spring sleeves are used in conjunction with the spring units, and the number of the spring sleeves is the same as the spring units; and the spring units are evenly and symmetrically arranged along the bottom of the force measuring wedge block.

4. The support with deformation and stress state monitoring function according to claim 1, characterized in that: The number of the corrugated plates provided is at least 4.

5. The support with deformation and stress state monitoring function according to claim 1, characterized in that: The top outer edge of the upper support plate is fixedly connected to the target structure through welding rods.

6. The support with deformation and stress state monitoring function according to claim 1, characterized in that: The cross-sectional shape of the connecting plate is rectangular; the bottom of the connecting plate is fixedly connected to the bearing structure by a plurality of high-strength bolts.

7. The support with deformation and stress state monitoring function according to claim 6, characterized in that: A bolt sleeve is preset in the bearing structure, and the high-strength bolt is sleeved in the bolt sleeve.

8. The support with deformation and stress state monitoring function according to claim 7, characterized in that: The high-strength bolts are evenly and symmetrically arranged along the cross section of the connecting plate, and the number of high-strength bolts and bolt sleeves is at least 8.

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