CN104989000B - A Tension Locking Device Used on a Shock-Isolation Rubber Bearing - Google Patents

Abstract

The present invention relates to a kind of tension blocking device on shock insulation rubber bearing, including installing steel plate (1), securing member, splicing nut (5) and pull bar (6)；Two installations steel plate (1) are respectively placed in the upper and lower of rubber support, it is connected with the rubber support using bolt, there is corresponding preformed hole up and down in the corner for installing steel plate (1), the securing member is individually fixed in upper and lower two installations steel plate (1) by the preformed hole, and the securing member is connected with the pull bar (6) by splicing nut (5).During by little shake load action, whole device tension member (6) effect does not produce displacement, and pull bar (6) top produces minute angle, pull bar (6) tension；When being shaken greatly or shaking above load action greatly, pull bar (6) are pulled off, and rubber support plays power consumption effect, and bearing produces horizontal displacement, realizes Two-stage control.

Description

A Tension Locking Device Used on a Shock-Isolation Rubber Bearing

technical field

The invention relates to a tension locking device used on a shock-absorbing rubber bearing.

Background technique

Under the action of earthquake or other loads, the existing vibration-isolation rubber bearings often produce large horizontal displacements in order to dissipate energy and reduce damage to the upper structure. Although the isolation (vibration) effect is remarkable, the horizontal direction of the support is soft, and a certain displacement may occur under the action of small earthquakes and moderate earthquakes, that is, the seismic response of the isolation support cannot be controlled in stages. Therefore, the existing shock-isolation rubber bearings have certain limitations in the application of some special buildings with strict displacement requirements.

Contents of the invention

In view of the defects existing in the prior art, the object of the present invention is to provide a device with a shock-isolation locking function, so that the shock-isolation support maintains a certain stiffness under the action of a small earthquake or a moderate earthquake, and limits the displacement of the shock-isolation support; Under the action of earthquake and above, the locking will fail, and the shock-isolation bearing will exert the energy dissipation effect, thereby realizing two-level control.

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

A tension locking device for shock-isolation rubber bearings, including installation steel plates 1, fasteners, splicing nuts 5 and pull rods 6; two installation steel plates 1 are respectively placed on the upper and lower parts of the rubber bearings , using bolts to connect with the rubber support, the corners of the installation steel plate 1 have reserved holes corresponding to the upper and lower sides, and the fasteners are respectively fixed to the upper and lower two installation steel plates 1 through the reserved holes, The fastener is connected with the pull rod 6 through the splicing nut 5 .

Further, the fastener includes an external sleeve 2, a threaded screw 4 and a large nut 3; the threaded screw 4 passes through the installation steel plate 1 through the reserved hole, and the external sleeve 2 has a thread, the thread is matched with the threaded screw 4, the large nut 3 and the external sleeve 2 are respectively fixed on the inside and outside of the threaded screw 4, and the inner end of the threaded screw 4 passes through the The splicing nut 5 is connected to the pull rod 6 , and the inner side mentioned here is located between the two installation steel plates 1 .

Further, the tie rod 6 is made of brittle material. The so-called brittle material refers to the material that only produces a small deformation or fracture under the action of external force, such as stretching and impact.

Further, the overhanging length of the threaded screw 4 can be adjusted through the large nut 3 and the external sleeve 2, thereby adjusting the height of the tension zone of the entire locking device. The overhang mentioned here refers to the length of the threaded screw 4 passing through the installation steel plate 1 and located outside the installation steel plate 1 .

Further, the length of the external sleeve 2 is greater than or equal to twice the extension length of the threaded screw 4 .

Further, the two ends of the splicing nut 5 each have an opening, and the first hole has a thread inside to cooperate with the threaded screw 4, and the second hole has a smooth arc surface space inside, and the first hole is larger than the first hole. Describe the second hole.

Further, the two ends of the tie rod 6 are spherical, and the two ends are connected by a thin rod.

Further, the splicing nut 5 is composed of two symmetrical half-nuts, and each of the two half-nuts has two protruding connecting plates for fastening with bolts. Two half nuts are tightened with lesser bolts, and are combined into a splicing nut 5 . The arc space inside the second hole of the splicing nut 5 can accommodate the spherical end of the tie rod 6; The diameter of the thin rod; the pull rod 6 can rotate to form a hinged system.

Further, adjusting the tightening degree of the splicing nut 5 and the threaded screw 4 can make the pull rod 6 press against the splicing nut 5 and provide a pre-tensioning force.

Further, the number, material and/or diameter of the tie rods 6 can be adjusted to meet different rigidity requirements. When the force received by the tie rod 6 is greater than the preset locking threshold, the tie rod will break, and the locking threshold can be adjusted by changing the number, material and/or diameter of the tie rods, etc.

Compared with the prior art, the present invention has the following outstanding features and significant technical progress:

The invention limits the displacement of the support under the specified small earthquake load by adding the tension locking device of the shock-isolation support, so that the whole support maintains a certain rigidity under small earthquakes, and the shock-isolation support is used under large earthquakes Energy consumption, to achieve two-level control.

Description of drawings

Figure 1 is a schematic diagram of a tension locking device with a shock-isolation rubber bearing;

Fig. 2 is the front view of the tension locking device with vibration-isolation rubber bearing;

Fig. 3 is a schematic diagram of a tension locking device;

Fig. 4 is a front view of the tension locking device;

Fig. 5 is a top view of the tension locking device;

Fig. 6 is the A-A sectional view of the tension locking device with shock-absorbing rubber bearing;

Fig. 7 is a B-B sectional view of the tension locking device;

Fig. 8 is a schematic diagram of splicing nuts in the tension locking device;

Fig. 9 is the front view of the splicing nut in the tension locking device;

Figure 10 is a top view of the splicing nut in the tension locking device;

Fig. 11 is a C-C sectional view of the spliced nut in the tension locking device;

Fig. 12 is a schematic diagram of the pull rod in the tension locking device;

Figure 13 is a front view of the pull rod in the tension locking device;

Fig. 14 is a schematic diagram of an external sleeve in a tension locking device;

Fig. 15 is a top view of the circumscribed sleeve in the tension locking device;

Fig. 16 is a D-D sectional view of the external sleeve in the tension locking device;

Figure 17 is a schematic diagram of the threaded screw in the tension locking device;

Fig. 18 is a front view of the threaded screw in the tension locking device.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 18, a tension locking device used on a vibration-isolation rubber bearing includes: mounting steel plates 1a, 1b, external sleeves 2a, 2b, large nuts 3a, 3b, threaded screws 4a, 4b, splice nuts 5a, 5b, pull rod 6.

Common lead rubber bearing 7 among Fig. 1, Fig. 6 is made up of connecting plate 8, sealing plate 9, steel plate 10, rubber layer 11, lead core 12.

As shown in FIGS. 14 to 16 , the external sleeve 2 has internal threads that can cooperate with the threaded screw rod 4 . As shown in Fig. 6 and Fig. 7, the length of the external sleeves 2a, 2b is greater than or equal to twice the extension length of the screw rods 4a, 4b.

As shown in Figure 1, Figure 2 and Figure 7, the threaded screws 4a, 4b pass through the installation steel plates 1a, 1b respectively, and the two sides of the installation steel plates are respectively fixed on the installation steel plates by external sleeves 2a, 2b and large nuts 3a, 3b .

As shown in Figures 8-11, the splicing nut 5 is anchored by the anchor screw rods 13a, 13b and the anchor nuts 14a, 14b. As shown in FIG. 11 , one end of the splicing nut 5 has a larger hole, which is called the first hole, and the other end has a smaller hole, which is called the second hole. The inner wall of the first hole contains threads, which can cooperate with the threaded screw rods 4a, 4b. As shown in the figure, there is a part of reserved space on one side of the second hole of the splicing nut 5, which is a smooth arc surface. The diameter of the second hole is slightly larger than the diameter of the rod part of the tie rod and slightly smaller than the diameter of the ball end of the tie rod, ensuring that the pull rod 6a The ball end of , 6b can rotate freely within a certain extent in the reserved space of the splicing nut, and is not restricted by the opening on the splicing nut.

As shown in Figure 2, Figure 4 and Figure 6, the length of the threaded screw 4a, 4b protruding from the installation steel plate is controlled by the external sleeve 2a, 2b and the large nut 3a, 3b, and then the height of the locking device can be adjusted, according to different Working conditions can replace the tie rods of different lengths.

As shown in FIG. 6 , during installation, the ball end of the tie rod 6 and the splicing nut 5 are pressed tightly by tightening the splicing nuts 5 a , 5 b and the threaded screw rods 4 a , 4 b. Pretension can be provided on request.

The installation method is as above, as shown in Fig. 1 and Fig. 2, when the force on the tie rod is greater than the preset locking threshold, the tie rod is sheared and broken. The locking threshold can be set by adjusting the number, material and/or diameter of the tie rods to meet different rigidity requirements. In the isolation of earthquakes, when subjected to small earthquakes or other loads, there is a tendency to produce horizontal displacement, and the tie rods are offset by a small angle. Due to the limitation of the tie rods, the entire device is locked, and the isolation support does not work. When subjected to a large earthquake or a load above a large earthquake, the tie rod is broken, the lock fails, and the vibration-isolation support generates displacement to exert an energy dissipation effect, thereby realizing two-stage control.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (9)

1. a kind of tension blocking device on shock insulation rubber bearing, it is characterised in that：Including install steel plate (1), securing member, Splicing nut (5) and pull bar (6)；

Two installations steel plate (1) are respectively placed in the upper and lower of rubber support, using bolt and the rubber support Connection, the corner for installing steel plate (1) have corresponding preformed hole up and down, and the securing member is fixed respectively by the preformed hole In upper and lower two installations steel plate (1), the securing member is connected with the pull bar (6) by splicing nut (5)；

The securing member includes external sleeve (2), thread screw (4) and big nut (3)；Described thread screw (4) are by described Preformed hole through installation steel plate (1), with screw thread in external sleeve (2), the screw thread and the thread screw (4) Coordinate, big nut (3) and the external sleeve (2) are fixed in the inner side and outer side of the thread screw (4) respectively, described The medial end of thread screw (4) is connected with the pull bar (6) by splicing nut (5).

2. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：The pull bar (6) it is made up of fragile material.

3. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：By described Big nut (3) and the external sleeve (2) can adjust the extension of the thread screw (4), so as to adjust whole locking The tensile region height of device.

4. according to claim 1 or 3 for the tension blocking device on shock insulation rubber bearing, it is characterised in that：Described The length of external sleeve (2) is more than or equal to 2 times of the extension of thread screw (4).

5. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：The splicing Respectively there is a perforate at the two ends of nut (5), and the first in the hole portion has screw thread, coordinate with the thread screw (4), the second in the hole portion With smooth arc-shaped surface space, first hole is more than second hole.

6. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：The pull bar (6) two ends are connected by thin bar between described two ends in spherical.

7. the tension blocking device on shock insulation rubber bearing according to claim 5, it is characterised in that：The splicing The cambered surface space in the second in the hole portion of nut (5) can accommodate the balled end of the pull bar (6)；Second hole straight Footpath is less than the ball end diameter of pull bar (6), more than the thin bar diameter of the pull bar (6)；Pull bar (6) can rotate, shape Become pin-jointed system.

8. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：Adjust described Splicing nut (5) with the thread screw (4) screw tight degree can make the pull bar (6) push against described splicing nut (5), and Pretension can be provided.

9. the tension blocking device on shock insulation rubber bearing according to claim 1, it is characterised in that：The pull bar (6) quantity, material and/or diameter are adjustable to adapt to different rigidity requirement.