CN215482261U - Limiting support and beam bridge - Google Patents
Limiting support and beam bridge Download PDFInfo
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- CN215482261U CN215482261U CN202120715958.4U CN202120715958U CN215482261U CN 215482261 U CN215482261 U CN 215482261U CN 202120715958 U CN202120715958 U CN 202120715958U CN 215482261 U CN215482261 U CN 215482261U
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- guide rod
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Abstract
The utility model provides a limit support, which relates to the field of buildings, and comprises: a base plate; the guide rod is connected with the bottom plate; a connecting member for fixing and unfixing the base plate and the guide bar; the force transmission piece is fixedly connected with the guide rod and used for receiving acting force and transmitting the acting force to the guide rod; wherein, under the fixed state of the guide rod and the bottom plate, the guide rod is fixed relative to the bottom plate; under the state that the guide rod and the bottom plate are released from fixing, the guide rod can move along the direction of acting force relative to the bottom plate. The utility model also provides a beam bridge. The limiting support can be protected when the external force is too large, and the service life of the limiting support is prolonged.
Description
Technical Field
The utility model relates to the field of buildings, in particular to a limiting support and a beam bridge.
Background
The limiting support is required to be arranged between the relatively movable parts of the building to limit the movement of the movable parts, so that the structure of the building is prevented from being damaged, for example, in a bridge type bridge, the limiting support is arranged between the beam and the pier to limit the relative movement of the beam and the pier, and the limiting support is easy to damage and short in service life when being subjected to overlarge external force.
SUMMERY OF THE UTILITY MODEL
The utility model provides a limiting support and a beam bridge, and aims to solve the technical problem of how to protect the limiting support when the limiting support is subjected to overlarge external force so as to prolong the service life of the limiting support.
The embodiment of the utility model provides a limiting support, which comprises: a base plate; the guide rod is connected with the bottom plate; a connecting member for fixing and unfixing the base plate and the guide bar; the force transmission piece is fixedly connected with the guide rod and used for receiving acting force and transmitting the acting force to the guide rod; wherein, in the fixed state of the guide rod and the bottom plate, the guide rod is fixed relative to the bottom plate; and under the condition that the guide rod and the bottom plate are not fixed, the guide rod can move along the direction of the acting force relative to the bottom plate.
Further, the connecting piece enables the bottom plate and the guide rod to be released from fixation in a state that the acting force received by the force transmission piece is larger than a preset threshold value; and under the condition that the acting force received by the force transmission piece is less than or equal to a preset threshold value, the connecting piece enables the bottom plate to be fixed with the guide rod.
Furthermore, the connecting piece enables the bottom plate and the guide rod to be fixed into a state that the connecting piece is connected with the bottom plate and the guide rod.
Further, the connecting piece enables the bottom plate and the guide rod to be fixedly released, and at least one part of the connecting piece is broken.
Further, the connector includes: the limit stop is abutted against the end part of the guide rod; the limit stop is connected with the bottom plate through the shearing pin; the connecting piece enables the bottom plate and the guide rod to be fixed in a releasing mode, and the shearing pin is broken.
Further, the connecting member further includes: and the adjusting bolt is in threaded connection with the limit stop and is abutted against the end part of the guide rod.
Further, the connector includes: the limit stop block is fixedly connected with the bottom plate and is provided with an accommodating cavity; the limiting inner sleeve is positioned in the accommodating cavity and is connected with the limiting stop block in a sliding manner, and the limiting inner sleeve is abutted against the end part of the guide rod; the shearing pin is connected with the limit stop block and the limit inner sleeve; the connecting piece enables the bottom plate and the guide rod to be fixed in a releasing mode, and the shearing pin is broken.
Further, the connecting member further includes: and the adjusting bolt is in threaded connection with the limiting inner sleeve and is abutted against the end part of the guide rod.
Furthermore, the number of the connecting pieces is multiple and the connecting pieces are arranged at intervals along the length direction of the guide rod.
An embodiment of the present invention further provides that the beam includes: the limiting support and the pier are fixedly connected with the bottom plate; a beam contactable with the force transfer member; wherein the limiting support is positioned between the pier and the beam.
The embodiment of the utility model provides a limiting support which comprises a bottom plate, a guide rod connected with the bottom plate, a force transmission piece fixedly connected with the guide rod, and a connecting piece used for fixing or unfixing the bottom plate and the guide rod. The force transmission piece is used for receiving acting force and transmitting the acting force to the guide rod, the guide rod is fixed relative to the bottom plate in a fixed state of the guide rod and the bottom plate, and the guide rod can move relative to the bottom plate in the direction of the acting force in a state of releasing the fixation of the guide rod and the bottom plate. Through setting up the connecting piece that can make bottom plate and guide bar fixed and remove fixedly, when the effort that passes power piece and accept was too big, the connecting piece can be switched into the state of removing fixedly by the fixed state with the connected state between bottom plate and the guide bar, make pass power piece and guide bar can be under the effect of this effort, relative bottom plate is along the direction motion of this effort, thereby reduced the deformation that passes power piece and guide bar and take place under the effect of this effort, prevent that the deformation volume that passes power piece from exceeding the maximum elastic deformation volume that passes power piece, lead to passing power piece to take place plastic deformation or lead to passing the structure of power piece and receive destruction, and, prevent that the deformation volume that passes power piece from exceeding the maximum elastic deformation volume that leads to pass power piece, lead to passing power piece to take place plastic deformation or lead to the structure of guide bar and receive destruction. Namely, the limiting support is protected when the external force is too large, and the service life of the limiting support is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a limiting support according to an embodiment of the present invention;
fig. 2 is an assembly schematic diagram of a bottom plate, a force transmission member, a guide rod and a first type of connecting member in a limiting support provided by an embodiment of the utility model;
fig. 3 is an assembly diagram of a bottom plate, a force transmission member, a guide rod and a second type of connecting member in a limiting support provided by an embodiment of the utility model;
FIG. 4 is a schematic view of the assembly of the bottom plate, the force transmission member, the guide rod and the third type of connecting member in the position limiting support according to the embodiment of the present invention;
FIG. 5 is a schematic view of the assembly of the bottom plate, the force transmission member, the guide rod and the third type of connecting member in another spacing support according to the embodiment of the present invention;
FIG. 6 is a schematic view of the assembly of the bottom plate and the limit stop in the limit support according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a beam bridge according to an embodiment of the present invention.
Description of the reference numerals
1-limit support, 2-beam, 3-pier, 10-bottom plate, 11-positioning groove, 20-guide rod, 21-first magnetic element, 30-force transmission element, 40-connecting element, 40A-first type connecting element, 41A-fixed seat, 42A-connecting pin, 40B-second type connecting element, 41B-armature, 42B-electromagnetic coil, 43B-pressure sensor, 44B-control element, 40C-third type connecting element, 41C-limit stop, 42C-limit inner sleeve, 43C-shear pin, 44C-adjusting bolt, 45C-sealing guide element, 411C-accommodating cavity and 412C-positioning boss.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the utility model will not be described further.
In particular embodiments, the spacing block may be used in any building where there is a portion of relative movement, for example, the spacing block may be applied to a track structure, disposed between a rail and a tie, to limit relative movement between the rail and the tie; for example, the limiting bearing can also be used for a beam bridge which comprises a beam and an pier, wherein the pier supports the beam to bear the load of the beam, and the limiting bearing is arranged between the beam and the pier and used for limiting the relative movement of the beam and the pier so as to prevent the beam surface of the beam from being deformed due to the overlarge displacement of the beam. For convenience of description, the structure of the limit support is exemplified by taking the limit support as an example of application of the limit support to a beam bridge, and the type of building to which the limit support is applied does not have any influence on the structure of the limit support.
In some embodiments, as shown in fig. 1, the spacing pedestal 1 includes: a base plate 10, a guide rod 20, a force transfer member 30 and a connecting member 40. The base plate 10 is adapted to be fixedly connected to the pier, and the guide bar 20 is connected to the base plate 10.
The force transfer member 30 is fixedly connected to the guide rod 20 for receiving the acting force and transferring the acting force to the guide rod 20, and in particular, the force transfer member 30 is adapted to contact the beam to apply a restraining force to the beam to restrain the deformation of the beam, and at the same time, the beam applies a reaction force of the restraining force to the force transfer member 30, and the force transfer member 30 is adapted to transfer the reaction force to the guide rod 20. The specific process of the force-transmitting member 30 limiting the displacement and deformation of the beam 2 is discussed in other embodiments and will not be described herein.
The link 40 is used to fix and release the base plate 10 and the guide bar 20, that is, the link 40 enables the connection form between the guide bar 20 and the base plate 10 to have two states of a fixed state and a released state, and the two states can be switched. When the connection form between the guide rod 20 and the bottom plate 10 is a fixed state, the guide rod 20 is fixed relative to the bottom plate 10, and the guide rod 20 and the bottom plate 10 cannot move relatively; in a state where the connection between the guide rod 20 and the base plate 10 is released, the guide rod 20 can move in a direction of the force applied by the force-applying member 30 to the guide rod 20. Alternatively, the force transmission member 30 is configured to receive a force along the length direction of the guide rod 20 and transmit the force along the length direction of the guide rod 20 to the guide rod 20, and the guide rod 20 is movable relative to the base plate along the length direction of the guide rod 20 in a state where the connection between the guide rod 20 and the base plate 10 is released.
It should be noted that the connecting member 40 may be any structure capable of fixing and releasing the base plate 10 and the guide bar 20, and the structure of the connecting member 40 and the principle of fixing and releasing the base plate 10 and the guide bar 20 by the connecting member will be described below with reference to fig. 2 and 3.
As shown in fig. 2, the first type of connection member 40A includes a fixed seat 41A and a connection pin 42A, the fixed seat 41A is fixedly connected with the bottom plate 10, one end of the connection pin 42A is fixedly connected with the fixed seat 41A, and the other end of the connection pin 42A is fixedly connected with the bottom plate 10. The force-transmitting member 30 receives the force and transmits it to the guide rod 20, which guide rod 20 transmits the force in the form of shear force to the connecting pin 42A. Under the condition that the shearing force is not larger than the maximum shearing force which can be borne by the connecting pin 42A, the connecting state between the guide rod 20 and the bottom plate 10 is fixed connection, and the guide rod 20 is fixed relative to the bottom plate 10; when the shearing force is larger than the maximum shearing force that the connecting pin 42A can bear, the connecting pin 42A is broken, the connection state between the guide lever 20 and the base plate 10 is switched to the released state, and the guide lever 20 can move in the direction of the shearing force with respect to the base plate 10 by the shearing force.
As shown in fig. 3, the second type of connecting element 40B comprises an armature 41B and a solenoid 42B, the armature 41B being fixedly connected to the guide rod 20 and the solenoid 42B being fixedly connected to the base plate 10. When the electromagnetic coil 42B is energized, the electromagnetic coil 42B attracts the armature 41B by magnetic force, the connection state between the guide rod 20 and the base plate 10 is a fixed state, and the guide rod 20 is fixed with respect to the base plate 10; in the deenergized state of the electromagnetic coil 42B, the magnetic force applied to the armature 41B by the electromagnetic coil 42B disappears, and the guide rod 20 can be moved in the direction of the applied force with respect to the base plate 10 by the applied force. Optionally, the second type of connection 40B also includes a stress sensor and a control element. The stress sensor is arranged on the force transmission piece 30 and used for detecting the magnitude of the acting force received by the force transmission piece 30, and when the stress sensor detects that the acting force received by the force transmission piece 30 is larger than a preset threshold value, the stress sensor sends a disconnection signal to the control element, and the control element responds to the disconnection signal and controls the electromagnetic coil 42B to be powered off, so that the connection state between the guide rod 20 and the bottom plate 10 is automatically switched from a fixed state to a fixing release state, and manual operation is not needed.
The connection state between the guide bar 20 and the base plate 10 is in a fixed state and a released state by providing the connection member 40, when the acting force received by the force transmission piece 30 is too large, the connecting piece 40 can switch the connection state between the bottom plate 10 and the guide rod 20 from the fixed state to the unfixed state, so that the force transmission piece 30 and the guide rod 20 can move relative to the bottom plate 10 along the direction of the acting force under the action of the acting force, thereby reducing the deformation of the force transmission piece 30 and the guide rod 20 under the action of the acting force, preventing the deformation of the force transmission piece 30 from exceeding the maximum elastic deformation of the force transmission piece 30, causing the plastic deformation of the force transmission piece or causing the structure of the force transmission piece 30 to be damaged, and preventing the amount of deformation of the guide rod 20 from exceeding the maximum amount of elastic deformation of the guide rod 20, resulting in plastic deformation of the force-transmitting member or structural damage to the guide rod 20. That is, when the external force applied to the base 1 is too large, the guide rod 20 and the force transmission member 30 can move in the direction of the applied force relative to the bottom plate 10, so that the applied force is unloaded, the guide rod 20 and the force transmission member 30 of the base 1 are protected, and the service life of the base 1 is prolonged.
The connection state between the guide rod 20 and the bottom plate 10 is switched from the fixed state to the unfixed state, and the connection state between the guide rod 20 and the bottom plate 10 can be switched from the unfixed state to the unfixed state by manually operating the connecting member 40, for example, in a state where a sudden or strong wind occurs in the air temperature, by manually changing the state of the connecting member 40; the connecting element 40 may also automatically release the fixation between the guide rod 20 and the base plate 10 in a state where the force transmission element 30 receives a reaction force exceeding a predetermined threshold value, so that the guide rod 20 can move relative to the base plate 10 in the direction of the force.
The embodiment of the utility model provides a limiting support which comprises a bottom plate, a guide rod connected with the bottom plate, a force transmission piece fixedly connected with the guide rod, and a connecting piece used for fixing or unfixing the bottom plate and the guide rod. The force transmission piece is used for receiving acting force and transmitting the acting force to the guide rod, the guide rod is fixed relative to the bottom plate in a fixed state of the guide rod and the bottom plate, and the guide rod can move relative to the bottom plate in the direction of the acting force in a state of releasing the fixation of the guide rod and the bottom plate. Through setting up the connecting piece that can make bottom plate and guide bar fixed and remove fixedly, when the effort that passes power piece and accept was too big, the connecting piece can be switched into the state of removing fixedly by the fixed state with the connected state between bottom plate and the guide bar, make pass power piece and guide bar can be under the effect of this effort, relative bottom plate is along the direction motion of this effort, thereby reduced the deformation that passes power piece and guide bar and take place under the effect of this effort, prevent that the deformation volume that passes power piece from exceeding the maximum elastic deformation volume that passes power piece, lead to passing power piece to take place plastic deformation or lead to passing the structure of power piece and receive destruction, and, prevent that the deformation volume that passes power piece from exceeding the maximum elastic deformation volume that leads to pass power piece, lead to passing power piece to take place plastic deformation or lead to the structure of guide bar and receive destruction. Namely, the limiting support is protected when the external force is too large, and the service life of the limiting support is prolonged.
In some embodiments, as shown in fig. 1, the connection between the guide bar 20 and the base plate 10 may be achieved in various ways. For example, the guide rod 20 may be connected to the base plate 10 through the connecting member 40, that is, the guide rod 20 may be movably connected to the base plate 10 through the connecting member 40, and at the same time, in a state where the connection relationship between the guide rod 20 and the base plate 10 is fixed, the connecting member 40 may further be used to limit the relative movement between the guide rod 20 and the base plate 10, and in a state where the connection relationship between the guide rod 20 and the base plate 10 is released, the connecting member 40 may release the limitation of the relative movement between the guide rod 20 and the base plate 10, so that the guide rod 20 may move in the direction of the acting force with respect to the base plate 10; the guide rod 20 may be connected to the base plate 10 together through a movable connection structure and a connection member 40, the guide rod 20 may be movably connected to the base plate 10 through the movable connection structure, the connection member 40 may limit the relative movement between the guide rod 20 and the base plate 10 in a fixed state of the connection state between the guide rod 20 and the base plate 10, and the connection member 40 may release the limitation of the relative movement between the guide rod 20 and the base plate 10 in a released state of the connection state between the guide rod 20 and the base plate 10, so that the guide rod 20 may move in the direction of the force with respect to the base plate 10. The movable connecting structure can be any structure which can movably connect the guide rod 20 with the base plate 10, for example, the movable connecting structure can be a fixing sleeve which is fixedly connected with the base plate 10 and is sleeved on the surface of the guide rod 20; the movable connecting structure can also be a slider fixedly connected with the guide rod 20 and movably connected with the bottom plate 10. In the following embodiments, if the connection between the guide bar 20 and the base plate 10 is released and the connection between the guide bar 20 and the base plate 10 cannot be achieved by the connection member 40, the guide bar 20 can be understood to be connected to the base plate 10 together with the movable connection structure and the connection member 40.
In some embodiments, as shown in fig. 1, in a state where the acting force received by the force transmission member 30 is greater than the preset threshold, the connecting member 40 releases the fixing of the guide rod 20 from the base plate 10, that is, in a state where the acting force applied by the beam to the force transmission member 30 is greater than the preset threshold, the connecting member 40 can switch the connection state between the guide rod 20 and the base plate 10 from the fixed state to the released state, so that the force transmission member 30 is automatically protected without being operated by a person, the workload of manual operation is saved, and the protection of the force transmission member 30 by the limit support 1 is more reliable.
The preset threshold value is determined according to the minimum value of the maximum acting force which can be borne by the guide rod 20, the maximum acting force which can be borne by the force transmission piece 30 and the maximum acting force which can be borne by the connecting part between the guide rod 20 and the force transmission piece 30, namely, under the action of the acting force which is smaller than the preset threshold value, the guide rod 20 and the force transmission piece 30 cannot fail in other forms except fatigue failure, the other forms of failure include plastic deformation and fracture, the connection between the force transmission piece 30 and the guide rod 20 cannot be damaged, the force transmission piece 30 can reliably transmit the acting force to the guide rod 20, and the movement relative to the guide rod 20 cannot occur. Optionally, the preset threshold is equal to a product of a theoretical threshold and a redundancy coefficient, wherein the theoretical threshold is a minimum value of a maximum acting force that the guide rod 20 can bear, a maximum acting force that the force transmission member 30 can bear, and a maximum acting force that the connecting portion between the guide rod 20 and the force transmission member 30 can bear, and the redundancy coefficient is between 90% and 95%, so as to reserve sufficient engineering redundancy, thereby protecting the base 1 more reliably.
In some embodiments, as shown in fig. 1, the connecting member 40 fixes the base plate 10 and the guide bar 20 to the connecting member 40 to connect the base plate 10 and the guide bar 20, that is, the connecting member 40 fixes the connection state of the base plate 10 and the guide bar 20 by connecting the base plate 10 and the guide bar 20.
In some embodiments, the link 40 breaks the base 10 and the guide bar 20, which are not fixed to at least a portion of the link 40, that is, the connection state between the base plate 10 and the guide bar 20 is switched from the fixed state to the released state by breaking at least a portion of the link 40. Wherein, the structural strength of the connecting piece 40 is smaller than a preset threshold value, and the connecting piece 40 is broken under the condition that the acting force applied on the force transmission piece 30 is larger than the preset threshold value.
In some embodiments, as shown in FIG. 4, a third type of connector 40C includes a positive stop 41C, and a shear pin 43C. The limit stopper 41C abuts on the end of the guide bar 20 and is fixedly connected to the base plate 10 by a shear pin 43C. The third type of connecting element 40C releases the fixing of the guide rod 20 to the base plate 10, i.e. the limit stop 41C is placed on the base plate 10 and is fixedly connected to the base plate by the shear pin 42C, when the acting force applied to the force-transmitting element 30 is greater than the predetermined threshold value, the shear pin 42C is broken, and the limit stop 41C is movable relative to the base plate 10, so that the guide rod 20 can move relative to the base plate 10.
Optionally, as shown in fig. 4, the third type of connecting member 40C further includes an adjusting bolt 44C, the adjusting bolt 44C is in threaded connection with the limit stop 41C, specifically, the limit stop 41C is provided with a threaded hole, and the adjusting bolt 44C is screwed into the threaded hole, so as to be in threaded connection with the limit stop 41C. Meanwhile, the adjustment bolt 44C abuts the end of the guide rod 20, that is, the limit stopper 41C abuts the end of the guide rod 20 via the adjustment bolt 44C, and the adjustment bolt is screwed into and out of the threaded hole by rotating the adjustment bolt 44C, thereby adjusting the position of the guide rod 20.
In some embodiments, as shown in fig. 5, a third type of connector 40C includes: the limiting stopper 41C is fixedly connected with the bottom plate 10 and is provided with an accommodating cavity 411C, the limiting inner sleeve 411C is located in the accommodating cavity 411C and is slidably connected with the limiting stopper 41C, and the shearing pin 43C is connected with the limiting stopper 41C and the limiting inner sleeve 42C so that the limiting stopper 41C and the limiting inner sleeve 42C are fixed. The inner limiting sleeve 42C abuts against the end of the guide rod 20, and when the acting force applied to the force transmission member 30 is larger than a preset threshold value, the shearing pin 43C is broken, so that the inner limiting sleeve 42C can move relative to the limiting stop 43C, and the guide rod 20 can move relative to the base plate 10. Alternatively, as shown in fig. 4, the cutting pin 43C passes through the limit stop 41C and the limit inner sleeve 42C at the same time, and is connected to the bottom plate 10, that is, the limit inner sleeve 42C is connected to the limit stop 42C through the cutting pin 43C, and the limit stop 42C is fixedly connected to the bottom plate 10 through the cutting pin 43C. When the acting force applied to the force transmission member 30 is large and the preset threshold value is reached, the portion of the shearing pin 43C located between the limit inner sleeve 42C and the limit stop 41C is broken, so that the limit inner sleeve 42C can slide relative to the limit stop 41C, and the limit stop 41C and the bottom plate 10 can be kept fixed.
Optionally, as shown in fig. 5, the third type of connecting element 40C further includes an adjusting bolt 44C, and the adjusting bolt 44C is in threaded connection with the limiting inner sleeve 42C, that is, the limiting inner sleeve 42C is provided with a threaded hole, and the adjusting bolt 44C is screwed into the threaded hole, so that the adjusting bolt 44C is in threaded connection with the limiting inner sleeve 42C. The adjusting bolt 44C abuts against the end of the guide rod 20, that is, the stopper inner 42C abuts against the end of the guide rod 20 via the adjusting bolt 42C, and the adjusting bolt is screwed into and out of the threaded hole by rotating the adjusting bolt 44C, thereby adjusting the position of the guide rod 20.
Optionally, as shown in fig. 5, an end of the guide rod 20 extends into the accommodating cavity 411C, the end of the guide rod 20 abuts against the adjusting bolt 44C, meanwhile, a sealing guide 45C is further disposed between the guide rod 20 and a surface of the accommodating cavity 411C adjacent to the guide rod 20, the sealing guide 45C has a self-lubricating function, and can reduce friction between the guide rod 20 and the accommodating cavity 411C, so that the service life of the guide rod 20 is prolonged.
In some embodiments, as shown in fig. 6, the limit stop 41C is provided with a positioning boss 412C, the base plate 10 is provided with a stop positioning groove 11, and the boss 415C is inserted into the positioning groove 11 to achieve positioning of the limit stop 41C, thereby facilitating installation of the limit stop 41C and the cutting pin 43C.
In some embodiments, the included angle between the length direction of the cutting pin 43C and the length direction of the guide rod 20 is not less than the preset angle, and optionally, the length direction of the cutting pin 43C is perpendicular to the length direction of the guide rod 20, and the length direction of the guide rod 20 is perpendicular to the top surface of the base plate 10. Optionally, the length direction of the shear pin 43C is perpendicular to the length direction of the guide rod 20, and the length direction of the guide rod 20 is parallel to the top surface of the base plate 10, so that in a scenario where the base 1 is applied to a beam bridge, an operation space between a pier and a beam is small, the shear pin 43C is parallel to the top surface of the base plate 10, and the shear pin 43C can be mounted and dismounted more conveniently. In some embodiments, as shown in fig. 1, the number of the connecting members 40 is plural and is arranged at intervals along the length direction of the guide bar 20, so that the fixing state and the sliding state of the guide bar 20 are controlled by the plural connecting members 40 in common, and the reliability of protection of the power transmission member 30 is further increased.
Embodiments of the present invention also provide a beam bridge, which in some embodiments, as shown in fig. 7, includes: a spacing pedestal 1, pier 2 and beam 3 as described in any one of figures 1 to 6. The limiting support 1 is positioned between the pier 2 and the beam 3, and the pier 2 is fixedly connected with the bottom plate 10.
The beam 2 can be in contact with the force transfer member 30 to limit displacement or deformation of the beam 2 in the length direction of the guide rod 20 by the force transfer member 30. A specific procedure for the force-transmitting member 30 to limit the displacement and deformation of the beam 2 in the direction of the length of the guide rod 20 will now be described. When the beam moves to the position contacting with the force transmission piece 30 in the process of sliding along the length direction of the guide rod 20 integrally under the action of external force, the force transmission piece 30 applies a limiting force opposite to the movement of the beam to the beam so as to limit the movement of the beam; when the beam is subjected to a local stretching deformation or a local contraction deformation along the length direction of the guide rod 20 under the action of temperature, the deformation part of the beam moves relative to the pier, namely, the force transmission piece 30 moves relative to the force transmission piece 30 along the length direction of the guide rod 20, and when the deformation part of the beam moves to a position contacting with the force transmission piece 30, the force transmission piece 30 applies an acting force opposite to the displacement direction of the deformation part to the deformation part of the beam so as to limit the local deformation of the beam. The force transmission piece 30 limits the displacement or deformation of the beam, and the displacement or deformation of the part of the beam, which is in contact with the force transmission piece 30, can be zero, that is, the limit support 1 is a fixed limit support, and the part of the beam, which is in contact with the fixed limit support, is not allowed to displace or deform; it can also mean that the displacement or deformation of the part of the beam contacting the force transmission element 30 is not larger than the preset range, i.e. the limit support 1 is a movable limit support or an elastic limit support, and only the part of the beam contacting the movable limit support or the elastic limit support is allowed to displace or deform within the preset range.
In some embodiments, as shown in fig. 7, the length direction of the guide rod 20 (the direction indicated by the solid arrow in fig. 7) is substantially parallel to the length direction of the beam 2 (the direction indicated by the dashed arrow in fig. 7), i.e. the force transfer member 30 is used to limit deformation or displacement of the beam 2 in the length direction of the beam 2. Here, the fact that the length direction of the guide rod 20 is substantially parallel to the length direction of the beam 2 means that an included angle is allowed between the length direction of the guide rod 20 and the length direction of the beam 2 due to construction manufacturing errors or construction errors, and the included angle is not greater than a preset angle threshold, which can be understood as 5 ° (degrees).
In some embodiments, as shown in fig. 7, the beam can slide along the length direction of the guide rod 20, and the force transmission member 30 can apply a restoring force to the beam 2 to return the beam 2 to the initial state when the guide rod 20 is in the fixed state, i.e., the limit seat 1 is a movable limit seat which allows the beam 2 to be displaced or deformed within a predetermined range and can provide a restoring force to return the beam to the initial state. The initial state of the beam 2 means that the beam 2 is not deformed by the change of temperature and the entire displacement is not caused by the external force. Specifically, in the state that the beam 2 is displaced integrally under the action of external force, the force transmission piece 30 can apply a force to the beam 2 in the direction opposite to the displacement direction of the beam 2 so as to limit the beam 2 to move continuously under the action of external force, and continuously apply restoring force to the beam 2 after the external force is removed, so that the beam 2 returns the beam 2 to the initial state integrally; under the condition that the beam 2 is locally deformed under the action of temperature, the force transmission piece 30 can apply restoring force to the locally deformed part of the beam 2 so as to limit the deformation of the locally deformed part to be continuously increased, and after internal stress in the beam 2 caused by the temperature disappears, the restoring force is continuously applied to the locally deformed part until the locally deformed part returns to the initial state.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. The utility model provides a spacing support, its characterized in that, spacing support includes:
a base plate;
the guide rod is connected with the bottom plate;
a connecting member for fixing and unfixing the base plate and the guide bar;
the force transmission piece is fixedly connected with the guide rod and used for receiving acting force and transmitting the acting force to the guide rod;
wherein, in the fixed state of the guide rod and the bottom plate, the guide rod is fixed relative to the bottom plate; and under the condition that the guide rod and the bottom plate are not fixed, the guide rod can move along the direction of the acting force relative to the bottom plate.
2. The limit support according to claim 1, wherein the connecting member is configured to release the base plate from the guide bar when the force applied by the force-transmitting member is greater than a predetermined threshold; and under the condition that the acting force received by the force transmission piece is less than or equal to a preset threshold value, the connecting piece enables the bottom plate to be fixed with the guide rod.
3. The limit bracket according to claim 2, wherein said connecting member fixes said base plate and said guide bar to said connecting member connecting said base plate and said guide bar.
4. The place holder of claim 3, wherein said connecting member breaks at least a portion of said connecting member that decouples said base plate from said guide bar.
5. The limit bracket of claim 4, wherein said connector comprises:
the limit stop is abutted against the end part of the guide rod;
the limit stop is connected with the bottom plate through the shearing pin;
the connecting piece enables the bottom plate and the guide rod to be fixed in a releasing mode, and the shearing pin is broken.
6. The limit bracket of claim 5, wherein said connector further comprises:
and the adjusting bolt is in threaded connection with the limit stop and is abutted against the end part of the guide rod.
7. The limit bracket of claim 4, wherein said connector comprises:
the limit stop block is fixedly connected with the bottom plate and is provided with an accommodating cavity;
the limiting inner sleeve is positioned in the accommodating cavity and is connected with the limiting stop block in a sliding manner, and the limiting inner sleeve is abutted against the end part of the guide rod;
the shearing pin is connected with the limit stop block and the limit inner sleeve;
the connecting piece enables the bottom plate and the guide rod to be fixed in a releasing mode, and the shearing pin is broken.
8. The limit bracket of claim 7, wherein said connector further comprises:
and the adjusting bolt is in threaded connection with the limiting inner sleeve and is abutted against the end part of the guide rod.
9. The limit support according to any one of claims 1 to 8, wherein the connecting piece is provided in a plurality and arranged at intervals along the length direction of the guide rod.
10. A beam bridge, comprising:
a check support according to any one of claims 1 to 9;
the pier is fixedly connected with the bottom plate;
a beam contactable with the force transfer member;
wherein the limiting support is positioned between the pier and the beam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120715958.4U CN215482261U (en) | 2021-04-08 | 2021-04-08 | Limiting support and beam bridge |
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| CN202120715958.4U CN215482261U (en) | 2021-04-08 | 2021-04-08 | Limiting support and beam bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215970A (en) * | 2021-04-08 | 2021-08-06 | 中铁第四勘察设计院集团有限公司 | Limiting support and beam bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215970A (en) * | 2021-04-08 | 2021-08-06 | 中铁第四勘察设计院集团有限公司 | Limiting support and beam bridge |
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