CN110973912B - A self-returning tension-compression type shock-isolating device for large shelves and its shock-isolating method - Google Patents

Abstract

The device comprises a large goods shelf, wherein the large goods shelf is arranged on a floor slab through a support column, and a plurality of shock isolation and absorption units are arranged between the large goods shelf and the floor slab; the shock isolation and absorption unit comprises a connecting steel plate and a plurality of floor slab embedded steel plates symmetrically arranged relative to the connecting steel plate, and also comprises a self-resetting tension-compression damper which is arranged between the connecting steel plate and the floor slab embedded steel plates and is fixed by giving pretightening force to the floor slab embedded steel plates, and is used for limiting and absorbing lateral movement and vibration of the large-sized goods shelf. The invention can provide good shock isolation and absorption performance for the large-sized goods shelf and ensure that the large-sized goods shelf is not damaged under the action of horizontal earthquake or vibration. Meanwhile, the viscoelastic material body and the pre-tightening in the self-resetting pull-type damper can enable the viscoelastic material body and the pre-tightening to recover to an initial state after being subjected to horizontal earthquake action or vibration, and stability and functionality of the large-sized goods shelf and the device are guaranteed.

Description

A self-returning tension-compression type shock-isolating device for large shelves and its shock-isolating method

Technical field

The invention relates to a large-scale shelf self-returning tension-compression type shock isolation device and a shock isolation method thereof.

Background technique

With the rapid development of the economy, warehousing forms in all walks of life are becoming more and more diversified and automated. As one of the most basic warehousing equipment in the logistics process, large-scale storage shelves are widely used in manufacturing, logistics centers, medicine, commerce, etc. It has a wide range of applications in many industries.

At present, the seismic resistance and shock absorption problems in the field of shelves have not been effectively solved. At present, various types of large shelves usually have end plates welded directly under the columns, and then the end plates are fixed to the foundation through anchor bolts, chemical anchors or expansion bolts to limit the shelf, which is a rigid connection support. When an earthquake occurs, the horizontal and vertical forces generated by the earthquake are directly transmitted from the bottom column to the support, which can easily cause damage or even destruction of the support, resulting in the movement and destruction of the shelf, causing the goods on the shelf to fall, causing safety incident. When forklifts, stackers or other storage and transportation machinery are used to store goods, earthquakes or vibrations will impact the structure, causing the structure to vibrate, causing damage or even destruction to the rack components or supports. At the same time, after an earthquake or vibration ends, the locations of storage and transportation machinery and equipment change randomly, requiring manual handling to restore the shelves to their pre-earthquake state, which greatly increases the work burden and may cause a series of personal and property safety issues. .

The traditional shelf isolation and shock-absorbing device is too complicated, which not only has limited isolation and damping effect on the shelf, but also cannot avoid damage or even destruction to the shelf components and supports. It is crucial to take reasonable measures to reduce the impact of earthquakes or vibrations on shelves, prevent goods from falling, avoid structural collapse, and ensure the safety of personnel and the environment.

Contents of the invention

The technical problem to be solved by the present invention is to provide a large-scale shelf self-returning tension-compression type shock isolation device and its shock isolation method. By setting the self-returning tension-compression damper between the connecting steel plate on the bottom beam of the large shelf and the embedded steel plate on the floor, it can provide better shock isolation performance for the large shelf and ensure that the large shelf is protected from horizontal earthquakes. Or not damaged by vibration. At the same time, the viscoelastic material body and preload spring in the self-returning tension-compression damper can return it to its original state after being subjected to horizontal earthquake action or vibration, ensuring the stability and functionality of large shelves and this device. In addition, the device is easy to install and easy to repair and replace during long-term use and after an earthquake.

In order to solve the above technical problems, the technical means adopted by the present invention are:

A self-returning tension-compression type shock-isolating device for large-scale shelves, including: a large-scale shelf, the large-scale shelf is installed on the floor through pillars and rollers, and a number of shock-isolating and absorbing units are provided between the large-scale shelf and the floor; The isolation and absorption unit includes a connecting steel plate and a number of self-returning tension-compression dampers and floor embedded steel plates. The connecting steel plate is fixedly connected to the bottom beam of the large shelf and has a certain gap between it and the floor. The damper is arranged on the floor and has a certain gap with the bottom beam of the large shelf. The embedded steel plate in the floor is fixedly connected to the floor and perpendicular to the floor, keeping a certain distance from the bottom beam of the large shelf;

The self-returning tension-compression damper is arranged between the connecting steel plate and the embedded steel plate of the floor and is given a pre-tightening force by the tightening force of the pre-tightened bolts on the embedded steel plate of the floor. It is used to limit the lateral movement of large shelves, including The first limiting cylinder, the second limiting cylinder, the preload spring, the viscoelastic material body and the force transmission steel plate; wherein the viscoelastic material body is disposed between the first limiting cylinder and the second limiting cylinder and sleeved A pre-tightening spring is provided, and the first limiting cylinder is provided on one side of the connecting steel plate and is parallel to the second limiting cylinder provided on one side of the force transmission steel plate;

A number of pre-tightening bolts are provided on the pre-embedded steel plate of the floor. The pre-tightening bolts are in close contact with the other side of the force-transmitting steel plate, giving the force-transmitting steel plate a pre-tightening force to clamp the viscoelastic material body to the first limiting cylinder. , between the second limiting tubes; the embedded steel plate of the floor is also provided with a number of limiting chutes for the connecting rods on the other side of the force-transmitting steel plate to be inserted. The limiting chutes cooperate with the connecting rods to prevent the force-transmitting steel plates from being inserted. slip; slip;

Several of the isolation and damping units are arranged symmetrically about the connecting steel plates to limit horizontal seismic effects or vibrations in multiple directions.

Preferably for this solution, the first limiting cylinder and the second limiting cylinder are both thin-walled steel pipes.

Preferably for this solution, the first limiting cylinder and the second limiting cylinder have the same diameter and length, and the lengths of the first limiting cylinder and the second limiting cylinder are equal to 1 of the length of the viscoelastic material body. /5.

Preferably for this solution, the pre-embedded steel plate of the floor is provided with a number of threaded holes, and the pre-tightening bolts are connected to the pre-embedded steel plate of the floor through the threaded holes.

Preferably for this solution, the limit chute is located on the embedded steel plate of the floor and faces the side of the self-resetting tension-compression damper. The limit chute is a non-penetrating channel and is connected to the force-transmitting steel plate. Connecting rod size to suit.

Preferably for this solution, the viscoelastic material body is a cylinder or a prism and is made of a highly dissipative viscoelastic material.

Preferably for this solution, the two ends of the preload spring are connected to the connecting steel plate and the force transmission steel plate respectively, and are sleeved on the outside of the viscoelastic material body and arranged between the first limiting cylinder and the second limiting cylinder.

The invention also discloses a method for isolating and absorbing a self-returning tension-compression type shock-isolating device for a large shelf. The self-returning tension-compression device is installed between the connecting steel plate on the bottom beam of the large shelf and the floor embedded steel plate perpendicular to the floor. Type damper, several of the floor slab embedded steel plates are arranged symmetrically with respect to the connecting steel plates to limit horizontal seismic effects or vibrations in multiple directions;

Install pre-tightening bolts through several threaded holes on the embedded steel plate of the floor. The pre-tightening bolts give the force-transmitting steel plate pre-tightening force of the self-returning tension-compression damper and generate pre-tensioning force on the viscoelastic material body and pre-tightening spring. Prevent viscoelastic material body from slipping;

When the floor on which large shelves are placed is subjected to horizontal seismic effects or vibrations, the self-returning tension-compression isolation and isolation device of the large shelves forms a weak rigidity layer at the bottom of the large shelves, reducing the horizontal seismic effects or vibrations transmitted from the floor to the large shelves. , to achieve the effect of isolation;

The embedded steel plate on the floor moves sideways under the action of the earthquake, driving the force-transmitting steel plate on the pressure side of the device to compress the viscoelastic material body and the pre-tightened spring to undergo reciprocating deformation. Due to the high damping of the high-dissipation viscoelastic material Features: It will absorb and dissipate the energy generated due to seismic action or vibration. The lateral movement and vibration of the connecting steel plate are restrained and limited. The lateral movement and vibration of the large shelves are simultaneously restrained and limited, effectively reducing the impact of large shelves during earthquakes. Or the lateral displacement generated under the action of vibration has a shock-absorbing effect;

The force between the viscoelastic material body on the tension side of the device and the preload spring and the force transmission steel plate will be reduced to a certain extent. However, due to the preload of the self-returning tension-compression damper, the viscoelasticity The residual pre-tightening force of the material body allows it to still be clamped between the first limiting cylinder and the second limiting cylinder, allowing the entire device to function normally;

When the horizontal earthquake action or vibration gradually decreases or ends, the elastic force generated by the compression deformation of the viscoelastic material body and the preload spring on the compression side is transferred to the connecting steel plate, causing the large shelf to return to the state before the action. The elastic force of the viscoelastic material body and the preload spring on the side also returns the side to the pre-action state, and the entire device returns to the initial state, achieving a self-resetting effect.

Compared with the existing technology, the beneficial effects of the technical solution disclosed in the present invention are:

1. This device provides shock isolation performance for large shelves. Since the viscoelastic material body and the preload spring form a weak stiffness layer at the bottom of the shelf, it provides shock isolation performance for large shelves; under horizontal earthquake action or vibration, through The compressed viscoelastic material body and pre-tightened spring can consume the input energy and provide horizontal shock absorption performance for large shelves; under the action of a large earthquake, when the viscoelastic material body is within its compression limit, it can limit the impact of large shelves. Sideways movement and vibration to keep the shelf stable.

2. The device can self-reset after earthquake action or vibration. The elastic force of the viscoelastic material body and the preload spring allows it to return to its original state after compression and deformation, keeping the shelves and devices in a stable state, reducing labor costs, and ensuring the safety of shelves, goods, and personnel.

3. The device has large deformation ability and elastic recovery force. The viscoelastic material body of the device has strong elasticity, and the preload spring will also generate a large elastic restoring force after compression, so the deformation can still be recovered after large compression.

4. The device can play a self-limiting role. When the viscoelastic material body and the preload spring are compressed to a certain extent, the first limiting cylinder and the second limiting cylinder contact each other to limit further deformation of the entire device, which can play a self-limiting role.

5. This device can adjust the pre-tightening force on the viscoelastic material body. The pre-tightening bolts used in this device can adjust their pre-tightening force, thereby adjusting the pressure on the force-transmitting steel plate, and then adjusting the pre-tightening force on the viscoelastic material body to ensure that it can work normally and ensure the safety and effectiveness of the device. .

6. The device is easy to install, maintain and disassemble in large shelves. The limit chute provided on the embedded steel plate of the floor prevents the connecting rod from penetrating the embedded steel plate of the floor and protects the safety of maintenance personnel. Since the device has a simple structure and a clear force transmission path, the viscoelastic material body, pretension spring and force transmission steel plate in the device can be inspected and replaced by adjusting the pretensioning bolts. Therefore, it is convenient during long-term use and after a strong earthquake. Inspect, repair and replace units. At the same time, each component in the device can be processed and produced separately and can be used for a long time.

Description of the drawings

Figure 1 is a schematic structural diagram of a large-scale shelf self-returning tension-compression type shock isolation device in Embodiment 1;

Figure 2 is a schematic structural diagram of the isolation damping unit in Embodiment 1;

Figure 3 is a top view of the mid-isolation shock-absorbing unit in Embodiment 1;

Figure 4 is a schematic diagram of the A-A section in Figure 2;

Figure 5 is a schematic diagram of the embedded steel plate in the floor;

Figure 6 is a schematic structural diagram of the isolation damping unit in Embodiment 2;

1. Connecting steel plate, 2. Floor embedded steel plate, 21. Pre-tightened bolt, 22. Limit chute, 3. Self-resetting tension and compression damper, 31. First limit cylinder, 32. Second limit cylinder , 33. Preload spring, 34. Viscoelastic material body, 35. Force transmission steel plate, 36. Connecting rod, 4. Large shelf, 5. Floor slab, 6. Pillar.

Detailed ways

Below, the technical solution of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Example 1:

As shown in Figures 1 to 5, the present invention is a self-returning tension-compression type shock-isolating device for large-scale shelves. The large-scale shelves 4 are installed on the floor 5 through pillars 6. The shock-isolating device is composed of connecting steel plates 1, It consists of two floor slab embedded steel plates 2 and a self-returning tension-compression damper 3. The connecting steel plate 1 is fixedly connected to the bottom beam of the large shelf 4, and there is a certain gap between it and the floor slab 5. The two floor slab embedded steel plates 2 Perpendicular to the floor slab 5 and symmetrically arranged with respect to the connecting steel plate 1, there is also a certain gap between the floor slab embedded steel plate 2 and the large shelf 4. The self-returning tension-compression damper 3 is installed between the connecting steel plate 1 and the floor embedded steel plate 2 and is fixed with pre-tightening force through the floor embedded steel plate 2. It is used to limit and absorb the lateral movement and vibration of the large shelf 4, including The first limiting cylinder 31 , the second limiting cylinder 32 , the preload spring 33 , the viscoelastic material body 34 and the force transmission steel plate 35 .

The first limiting cylinder 31 is disposed on one side of the connecting steel plate 1 and is parallel to the second limiting cylinder 32 disposed on one side of the force transmission steel plate 35. The viscoelastic material body 34 is disposed between the first limiting cylinder 31 and the second limiting cylinder. A preload spring 33 is set between the position cylinders 32, and both ends of the preload spring 33 are fixedly connected to the connecting steel plate 1 and the force transmission steel plate 35 respectively.

Four pre-tightening bolts 21 are installed on the floor embedded steel plate 2 through threaded holes. The pre-tightening bolts 21 are in close contact with the other side of the force-transmitting steel plate 35 and give pre-tightening force to the force-transmitting steel plate 35 to clamp the viscoelastic material body 34 between the first limiting cylinder 31 and the second limiting cylinder 32 to prevent the viscoelastic material body 34 from detaching; the floor embedded steel plate 2 is also provided with a limiting position for the connecting rod 36 on the other side of the force transmission steel plate 35 to be inserted The chute 22, the limit chute 22 and the connecting rod 36 cooperate to prevent the force transmission steel plate 35 from being separated from the floor embedded steel plate 2.

In this embodiment, both the first limiting cylinder 31 and the second limiting cylinder 32 are thin-walled steel pipes.

In this embodiment, the first limiting cylinder 31 and the second limiting cylinder 32 have the same diameter and length, and the lengths of the first limiting cylinder 31 and the second limiting cylinder 32 are equal to the length of the viscoelastic material body 34 . 1/5.

In this embodiment, the limit chute 22 is provided on the side of the floor embedded steel plate 2 facing the self-returning tension-compression damper 3, and the limit chute 22 is a non-penetrating hole to prevent the connecting rod 36 from passing out. Steel plates 2 are embedded in the floor to protect the safety of maintenance personnel.

In this embodiment, the connecting steel plate 1 is a cube and is fixed to the bottom beam of the large shelf 4 by welding.

In this embodiment, the viscoelastic material body 34 is a cylinder and is made of a tension-compression type high-dissipation viscoelastic material.

In the embodiment of the present invention, a self-returning tension-compression type shock-isolation and isolation method for a large-scale shelf is provided. A self-returning tension-compression type shock-isolating device is installed between the connecting steel plate on the bottom beam of the large-scale shelf and the floor embedded steel plate perpendicular to the floor. Type damper, two floor slab embedded steel plates are arranged symmetrically about the connecting steel plate to limit horizontal seismic effects or vibrations in multiple directions;

Install pre-tightening bolts through several threaded holes on the embedded steel plate of the floor. The pre-tightening bolts give the force-transmitting steel plate pre-tightening force of the self-returning tension-compression damper and generate pre-tensioning force on the viscoelastic material body and pre-tightening spring to prevent sticking. The elastic material body slips;

When the floor on which large shelves are placed is subjected to horizontal seismic effects or vibrations, the self-returning tension-compression type shock-absorbing device of the large shelves forms a weak rigidity layer at the bottom of the large shelves, reducing the horizontal seismic effects or vibrations transmitted from the floor to the large shelves. to the isolation effect;

The embedded steel plate on the floor moves sideways under the action of the earthquake, driving the force-transmitting steel plate on the pressure side of the device to compress the viscoelastic material body and the pre-tightened spring to undergo reciprocating deformation. Due to the high damping of the high-dissipation viscoelastic material Features: It will absorb and dissipate the energy generated due to seismic action or vibration. The lateral movement and vibration of the connecting steel plate are restrained and limited. The lateral movement and vibration of the large shelves are simultaneously restrained and limited, effectively reducing the impact of large shelves during earthquakes. Or the lateral displacement generated under the action of vibration has a shock-absorbing effect;

The force between the viscoelastic material body on the tension side of the device and the preload spring and the force transmission steel plate will be reduced to a certain extent. However, due to the preload of the self-returning tension-compression damper, the viscoelasticity The residual pre-tightening force of the material body allows it to still be clamped between the first limiting cylinder and the second limiting cylinder, allowing the entire device to function normally;

When the horizontal earthquake action or vibration gradually decreases or ends, the elastic force generated by the compression deformation of the viscoelastic material body and the preload spring on the compression side is transferred to the connecting steel plate, causing the large shelf to return to the state before the action. The elastic force of the viscoelastic material body and the preload spring on the side also returns the side to the pre-action state, and the entire device returns to the initial state, achieving a self-resetting effect.

Example 2:

As shown in Figure 6, there are four embedded steel plates 2 in the floor, and they are symmetrical about the center of the connecting steel plate 1.

The present invention can be better understood based on the above embodiments. However, those skilled in the art can easily understand that the content described in the embodiments is only used to illustrate the present invention, and should not and will not limit the present invention described in detail in the claims.

Claims (6)

1. A self-returning tension-compression type shock-isolating device for large-scale shelves, which is characterized in that it includes: a large-scale shelf, which is installed on the floor through pillars and rollers, and several partitions are provided between the large-scale shelf and the floor. Shock-absorbing unit; the shock-absorbing unit includes a connecting steel plate and a number of self-returning tension-compression dampers and floor-embedded steel plates. The connecting steel plate is fixedly connected to the bottom beam of the large shelf, and there is a certain gap between the connecting steel plate and the floor. The self-returning tension-compression damper is arranged on the floor and has a certain gap with the bottom beam of the large shelf. The embedded steel plate in the floor is fixedly connected to the floor and perpendicular to the floor, keeping a certain distance from the bottom beam of the large shelf; The self-returning tension-compression damper is arranged between the connecting steel plate and the embedded steel plate of the floor and is given a pre-tightening force by the tightening force of the pre-tightened bolts on the embedded steel plate of the floor. It is used to limit the lateral movement of large shelves, including The first limiting cylinder, the second limiting cylinder, the preload spring, the viscoelastic material body and the force transmission steel plate; wherein the viscoelastic material body is disposed between the first limiting cylinder and the second limiting cylinder and sleeved A pre-tightening spring is provided, and the first limiting cylinder is provided on one side of the connecting steel plate and is parallel to the second limiting cylinder provided on one side of the force transmission steel plate; A number of pre-tightening bolts are provided on the pre-embedded steel plate of the floor. The pre-tightening bolts are in close contact with the other side of the force-transmitting steel plate, giving the force-transmitting steel plate a pre-tightening force to clamp the viscoelastic material body to the first limiting cylinder. , between the second limiting tubes; the embedded steel plate of the floor is also provided with a number of limiting chutes for the connecting rods on the other side of the force-transmitting steel plate to be inserted. The limiting chutes cooperate with the connecting rods to prevent the force-transmitting steel plates from being inserted. slip; slip; Several of the isolation and damping units are arranged symmetrically about the connecting steel plates to limit horizontal seismic effects or vibrations in multiple directions; The two ends of the preload spring are connected to the connecting steel plate and the force transmission steel plate respectively, and are sleeved on the outside of the viscoelastic material body and arranged between the first limiting cylinder and the second limiting cylinder; The first limiting cylinder and the second limiting cylinder are both thin-walled steel pipes. 2. The self-resetting tension-compression type shock-absorbing device for large shelves according to claim 1, characterized in that: the diameters and lengths of the first limiting cylinder and the second limiting cylinder are the same, and the first limiting cylinder The length of the cylinder and the second limiting cylinder is equal to 1/5 of the length of the viscoelastic material body. 3. The self-returning tension-compression type shock-isolating device for large shelves according to claim 1, characterized in that: the floor slab is provided with a number of threaded holes on the pre-embedded steel plate, and the pre-tightening bolts are connected to the floor slab through the threaded holes. Steel plate connection. 4. The self-returning tension-compression type shock-isolating device for large shelves according to claim 1, characterized in that: the limit chute is provided on the floor embedded steel plate and faces one side of the self-returning tension-compression type damper. On the other side, the limit chute is a non-penetrating hole, which is adapted to the size of the connecting rod on the force transmission steel plate. 5. The self-resetting tension-compression type shock-isolating device for large shelves according to claim 1, characterized in that: the viscoelastic material body is a cylinder or a prism and is made of high-dissipation viscoelastic material. 6. A method for isolating and absorbing the self-returning tension and compression type shock isolating device of a large shelf according to any one of claims 1 to 5, characterized in that: A self-returning tension-compression damper is installed between the connecting steel plate on the bottom beam of the large shelf and the floor embedded steel plate arranged perpendicular to the floor. The embedded floor steel plate is arranged symmetrically with respect to the connecting steel plate to limit horizontal earthquakes in multiple directions. action or vibration; Install pre-tightening bolts through several threaded holes on the embedded steel plate of the floor. The pre-tightening bolts give the force-transmitting steel plate pre-tightening force of the self-returning tension-compression damper and generate pre-tensioning force on the viscoelastic material body and pre-tightening spring. Prevent viscoelastic material body from slipping; When the floor on which large shelves are placed is subjected to horizontal seismic effects or vibrations, the self-returning tension-compression isolation and isolation device of the large shelves forms a weak rigidity layer at the bottom of the large shelves, reducing the horizontal seismic effects or vibrations transmitted from the floor to the large shelves. , to achieve the effect of isolation; The embedded steel plate on the floor moves sideways under the action of the earthquake, driving the force-transmitting steel plate on the pressure side of the device to compress the viscoelastic material body and the pre-tightened spring to undergo reciprocating deformation. Due to the high damping of the high-dissipation viscoelastic material Features: It will absorb and dissipate the energy generated due to seismic action or vibration. The lateral movement and vibration of the connecting steel plate are restrained and limited. The lateral movement and vibration of the large shelves are simultaneously restrained and limited, effectively reducing the impact of large shelves during earthquakes. Or the lateral displacement generated under the action of vibration has a shock-absorbing effect; The force between the viscoelastic material body on the tension side of the device and the preload spring and the force transmission steel plate will be reduced to a certain extent. However, due to the preload of the self-returning tension-compression damper, the viscoelasticity The residual pre-tightening force of the material body allows it to still be clamped between the first limiting cylinder and the second limiting cylinder, allowing the entire device to function normally; When the horizontal earthquake action or vibration gradually decreases or ends, the elastic force generated by the compression deformation of the viscoelastic material body and the preload spring on the compression side is transferred to the connecting steel plate, causing the large shelf to return to the state before the action. The elastic force of the viscoelastic material body and the preload spring on the side also returns the side to the pre-action state, and the entire device returns to the initial state, achieving a self-resetting effect.