A parallel energy-absorbing support equipment

Abstract

The present invention discloses a parallel energy-absorbing support equipment. The energy-absorbing support equipment is a frame-shaped structure, and each frame is composed of a plurality of metal columns, an elastic energy-absorbing unit and a pressure sensor; wherein the elastic energy-absorbing unit is installed between two adjacent sections of metal columns, and is used to measure the energy absorbed by the support equipment; the pressure sensor is installed between two adjacent sections of metal columns, and is used to measure the pressure borne by the support equipment; the elastic energy-absorbing unit includes an elastic energy-absorbing material and a pressure-coupling gasket, and the elastic energy-absorbing material is connected to the metal column through the pressure-coupling gasket. The parallel energy-absorbing support equipment is composed of a plurality of the above-mentioned energy-absorbing support equipment. The present invention has the advantages of measurable absorbed energy and high pressure measurement accuracy.

Description

Technical Field

[0001] The invention relates to the field of underground engineering laneway or tunnel support, and in particular to a parallel energy absorption type support equipment. Background Art

[0002] With the rapid development of underground engineering facilities such as underground mining and underground transportation in my country, the support requirements for underground engineering tunnels or tunnels are becoming higher and higher. However, traditional support equipment cannot measure the energy absorption of the equipment, and traditional support equipment cannot accurately measure the pressure on the equipment, making it increasingly difficult to meet the needs of today's support projects. Summary of the invention

[0003] The purpose of the present invention is to provide a parallel energy absorbing support equipment with the function of measurable energy absorption.

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

[0005] A kind of energy absorbing support equipment, the energy absorbing support equipment is a frame-shaped structure, each frame is composed of a number of metal columns, an elastic energy absorbing unit and a pressure sensor; wherein the elastic energy absorbing unit is installed between two adjacent sections of metal columns to measure the energy absorbed by the support equipment; the pressure sensor is installed between two adjacent sections of metal columns to measure the pressure borne by the support equipment; the elastic energy absorbing unit includes an elastic energy absorbing material and a pressure coupling gasket, and the elastic energy absorbing material is connected to the metal column through the pressure coupling gasket.

[0006] Optionally, the pressure sensor includes a connecting portion and a pressure-bearing portion, the two sides of the pressure-bearing portion are the connecting portions, and the connecting portions are inserted into the metal column and connected to the metal column.

[0007] Optionally, the energy-absorbing support equipment is a rectangular frame structure.

[0008] Optionally, the elastic energy-absorbing material is wood or rubber.

[0009] The present invention also provides a parallel energy-absorbing support equipment, comprising: a measuring circuit and a number of identical energy-absorbing support equipment provided by the present invention, wherein the pressure sensor in the energy-absorbing support equipment is a resistance-type pressure sensor, and the resistances of the pressure sensors at corresponding positions of each of the energy-absorbing support equipment are connected in parallel, and the resistance after parallel connection is recorded as a resistance to be measured, and the measuring circuit is used to measure each resistance to be measured to determine the pressure that the support equipment is borne by.

[0010] Optionally, the equipment also includes a control circuit, which includes a plurality of relays, each of which includes a coil, a normally open contact and a plurality of normally closed contacts, wherein the normally open contact is connected in series with a resistor to be measured, and each normally closed contact is connected in series one by one in a coil control loop of each of the remaining relays, wherein the resistor to be measured is connected in series with the normally open contact and then connected to the measurement circuit.

[0011] Optionally, the measurement circuit is a bridge measurement circuit, a bridge arm in the bridge measurement circuit is a measurement bridge arm, and a resistor connected to the measurement bridge arm is the resistor to be measured.

[0012] Optionally, the number of the energy-absorbing support equipment is two.

[0013] Optionally, the relay includes a first relay and a second relay, the first relay includes a first coil, a first normally open contact and a first normally closed contact, and the second relay includes a second coil, a second normally open contact and a second normally closed contact; the control switch K3 is connected in parallel with the first normally open contact and then connected in series with the first coil and the second normally closed contact to form a first control branch, and the control switch K4 is connected in parallel with the second normally open contact and then connected in series with the second coil and the first normally closed contact to form a second control branch; the first control branch and the second control branch are connected in parallel to the power supply circuit.

[0014] Optionally, a main control switch K2 is also connected in series in the power supply circuit.

[0015] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects: the parallel energy-absorbing support equipment provided by the present invention is equipped with an energy-absorbing unit, which can measure the energy absorbed by the support equipment. In addition, the parallel energy-absorbing support equipment provided by the present invention realizes accurate measurement of the pressure borne by the support equipment by connecting several support equipment in parallel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of the energy absorbing support equipment provided in Example 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the pressure measurement sensor in Example 1 of the present invention;

[0019] Figure 3This is a schematic structural diagram of the elastic energy absorbing unit in Example 1 of the present invention;

[0020] Figure 4 This is a structural dimension analysis diagram of the elastic energy absorbing unit in Example 1 of the present invention;

[0021] Figure 5 A schematic diagram of a double-group parallel energy-absorbing support device provided in Example 2 of the present invention;

[0022] Figure 6 This is a schematic diagram of a resistor parallel circuit of a pressure sensor in Example 2 of the present invention;

[0023] Figure 7 This is a schematic diagram of a bridge measurement circuit in Example 2 of the present invention;

[0024] Figure 8 This is a schematic diagram of a control circuit in Embodiment 2 of the present invention;

[0025] Fig. 9 This is a map of the lane area. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] The energy absorbing support equipment provided in this embodiment is a frame-shaped structure. Figure 1 Preferably, the frame structure can be a rectangular frame structure. Of course, in other embodiments, it can also be other frame structures. Each frame of the frame structure is composed of a number of metal columns, elastic energy absorption units and pressure sensors. Among them, the elastic energy absorption unit is installed between two adjacent sections of metal columns to measure the energy absorbed by the support equipment. The pressure sensor is installed between two adjacent sections of metal columns to measure the pressure on the support equipment. Specifically, it can be as follows Figure 1As shown, the left side is composed of a metal column, an elastic energy absorption unit 11-1n, and a pressure measurement sensor 10, the right side is composed of a metal column, an elastic energy absorption unit 31-3p, and a pressure measurement sensor 10, the upper side is composed of a metal column, an elastic energy absorption unit 21-2q, and a pressure measurement sensor 10, and the lower side is composed of a metal column, an elastic energy absorption unit 41-4s, and a pressure measurement sensor 10.

[0030] See also Figure 2 The pressure sensor 10 is used to measure the pressure value of the surrounding rock on the installed side pillar. The pressure sensor 10 includes a connecting part and a pressure-bearing part. The two sides of the pressure-bearing part are connecting parts, and the connecting part is inserted into the metal column and connected to the metal column. Among them, the length of the connecting part deep into the metal column 16 is H1, and the length of the pressure sensor pressure-bearing part 15 is H2.

[0031] See also Figure 3 The elastic energy absorbing unit includes an elastic energy absorbing material and a pressure coupling gasket, and the elastic energy absorbing material is connected to the metal column through the pressure coupling gasket. Among them, the elastic energy absorbing material 1 can be an elastic body such as wood, rubber, etc. If the elastic modulus of the elastic energy absorbing material 1 is T, such as Figure 4 As shown, the radius of the metal column 3 is R, and the geometric dimensions of the length × width × height of the metal column 3 before the pressure is a × b × c. After the pressure F from the metal column 3 acts, the geometric dimensions of the elastic energy absorbing material 1 change to length × width × height a' × b' × c', and the geometric dimensions of the pressure coupling gasket 2 are a × b × d, and its volume geometric dimensions remain constant. Therefore, the pressure F of the metal column 3 will act on the contact surface between the elastic energy absorbing material 1 and the pressure coupling gasket 2 through the pressure coupling gasket 2. Therefore, for a single elastic energy absorbing unit, the energy it absorbs E0 = F·(c-c') = F·Δc. At the same time, the deformation value c-c' of the elastic energy absorbing material 1 along the F direction is inversely correlated with the elastic modulus T of the elastic energy absorbing material 1, that is, when F is constant, the larger the elastic modulus T, the smaller the deformation value c-c', and the smaller the elastic modulus T, the larger the deformation value c-c'.

[0032] At the same time, F=σ·a·b, Δv=c-c',

[0033] The elastic energy absorbing material 1 satisfies Hooke's law when working, that is,

[0034] σ=T·ε

[0035] Therefore, the relationship between the elastic modulus T of the elastic energy absorbing material 1, the pressure F from the metal column 3, and the geometric dimensions of the elastic energy absorbing material 1 is:

[0036]

[0037] Therefore, the total absorbed energy of the support structure is measured as follows:

[0038] Calculate the deformation on the left:

[0039] Calculate the deformation on the right side:

[0040] Calculate the upper deformation:

[0041] Calculate the deformation of the lower side:

[0042] Calculate the energy absorption on the left side: E1 = F 11 L 11 +F 12 L 12 +…+F 1i L 1i +…+F 1n L 1n

[0043] Since the forces on the elastic energy-absorbing units on the left are equal, that is: F 11 =F 12 =…=F 1i =…=F 1n =F1

[0044] Therefore, the energy absorption on the left is:

[0045] Similarly, the energy absorption on the right side is: E3 = F3L3

[0046] The energy absorption of the upper side is: E2 = F2L2

[0047] The energy absorption of the lower side is: E4 = F4L4

[0048] Therefore, the total absorbed energy E of the support structure is the sum of the absorbed energy on the left, right, top and bottom sides, that is: E=E1+E2+E3+E4.

[0049] Example 2

[0050] Based on Example 1, this example provides a parallel energy absorbing support device, which includes: a measurement circuit and several energy absorbing support devices provided in Example 1. Taking a parallel energy absorbing support device consisting of two energy absorbing support devices as an example, the energy absorption of the parallel energy absorbing support device is calculated as follows:

[0051] Left deformation size:

[0052] Right deformation size:

[0053] Upper deformation size:

[0054] Lower side deformation size:

[0055] Energy absorption on the left: E1 = F 11 L 11 +F 12 L 12 +…+F 1i L 1i +…+F 1n L 1n

[0056] Since the force on the left elastic energy absorbing unit is equal, that is: F 11 =F 12 =…=F 1i =…=F 1n =F1

[0057] Therefore, the energy absorption on the left is:

[0058] Similarly, the energy absorption on the right side is: E3=F3L3

[0059] The energy absorption of the upper side is: E2 = F2L2

[0060] The energy absorption of the lower side is: E4 = F4L4

[0061] Therefore, the total absorbed energy E of an energy-absorbing support device is the sum of the energy absorbed on the left, right, top and bottom sides, that is: E = E1 + E2 + E3 + E4

[0062] Similarly, the energy absorption calculation of the second energy-absorbing support equipment is as follows:

[0063] Left deformation size:

[0064] Right deformation size:

[0065] Upper deformation size:

[0066] Lower side deformation size:

[0067] Energy absorption on the left: E1'=F 11 'L 11 '+F 12 'L 12 '+…+F 1i 'L 1i '+…+F 1n 'L 1n '

[0068] Since the force on the left elastic energy absorbing unit is equal, that is: F 11 '=F 12 '=…=F 1i '=…=F 1n '=F1'

[0069] Therefore, the energy absorption on the left is:

[0070] Similarly, the energy absorption on the right side is: E3'=F3'L3'

[0071] The energy absorption of the upper side is: E2'=F2'L2'

[0072] The energy absorption of the lower side is: E4'=F4'L4'

[0073] Therefore, the total absorbed energy E' of the second energy-absorbing support equipment is the sum of the energy absorbed on the left, right, top and bottom sides, that is: E' = E1' + E2' + E3' + E4'

[0074] Combining the first energy-absorbing support equipment and the second energy-absorbing support equipment, the information of the double-group parallel energy-absorbing support equipment is as follows:

[0075] Left deformation size: L1+L1'

[0076] Right deformation size: L3+L3'

[0077] Upper side deformation size: L2+L2'

[0078] Lower side deformation size: L4+L4'

[0079] Energy absorption on the left: E1+E1'

[0080] The energy absorption on the right side is: E3+E3'

[0081] The energy absorption on the upper side is: E2+E2'

[0082] The energy absorption of the lower side is: E4+E4'

[0083] The total absorbed energy of the double-group parallel energy-absorbing support equipment is E+E'.

[0084] The calculation method of the total absorbed energy of multiple sets of parallel energy-absorbing support equipment is based on the same principle as the calculation method of the total absorbed energy of the above two sets of parallel energy-absorbing support equipment.

[0085] In the present embodiment, the pressure sensors in each energy-absorbing support equipment are resistance-type pressure sensors, and the resistances of the pressure sensors at the corresponding positions of each energy-absorbing support equipment are connected in parallel, and the resistance after parallel connection is recorded as the resistance to be measured, and the measuring circuit is used to measure each resistance to be measured to determine the pressure borne by the support equipment. The parallel energy-absorbing support equipment in the present embodiment also includes a control circuit, which includes a plurality of relays, and the relay includes a coil, a normally open contact and a plurality of normally closed contacts. The normally open contact is connected in series with a certain resistance to be measured, and each normally closed contact is connected in series with the remaining resistances to be measured one by one, wherein the resistance to be measured is connected to the measuring circuit after the series contact. In the present embodiment, the measuring circuit is a bridge measuring circuit, and the bridge measuring circuit can reduce the influence of errors and improve the measurement accuracy. A certain bridge arm in the bridge measuring circuit is a measuring bridge arm, and the resistance connected in the measuring bridge arm is the resistance to be measured. Of course, in other embodiments, it can also be other forms of measuring circuits, not limited to bridge measuring circuits.

[0086] See also Figure 5 Taking the parallel energy absorbing support equipment composed of two energy absorbing support equipment as an example, the first energy absorbing support equipment and the second energy absorbing support equipment are respectively monitored by pressure measuring sensors 10 on the left, right, top and bottom sides. The pressure measuring sensor 10 is a resistance type sensor. The resistances on the left, right, top and bottom sides of the first energy absorbing support equipment are R 41 , R 42 , R 43 , R 44 The resistances of the left, right, upper and lower sides of the second energy-absorbing support equipment are R 51 , R 52 , R 53 , R 54 When measuring the pressure, the pressure sensor resistors on the corresponding sides of the first energy-absorbing support equipment and the second energy-absorbing support equipment are connected in parallel. At the same time, in order to save costs and take into account the simplicity of circuit implementation, the Figure 6 The parallel resistance circuit is controlled in this way.

[0087] Figure 6 The left resistance R of the first energy-absorbing support equipment 41 The left side resistor R of the second energy absorbing support equipment 51 After parallel connection, the normally open contact of relay KM1 is connected in series, and the resistor R on the right side of the first energy-absorbing support equipment 42 The resistor R on the right side of the second energy-absorbing support equipment 52 After parallel connection, the normally open contact of relay KM2 is connected in series.

[0088] Pressure sensor measurement circuit Figure 7 As shown, Figure 7 In, E a is the circuit power supply, U ois the output voltage, K1 is the control switch. When K1 is closed, the pressure sensor resistor is connected to the measurement circuit. Conversely, when K1 is disconnected, the pressure sensor resistor is disconnected from the measurement circuit.

[0089] Figure 8 It is the control circuit of the pressure sensor resistor parallel circuit. Figure 8 In, E b is the circuit power supply, K2, K3, K4 are control switches, all of which are controlled by a single chip microcomputer. Figure 8 and Figure 6 When the system is working, press the control switch K2 to close K2. When K3 is closed, the KM1 coil is energized, the KM1 normally open contact is closed, the KM1 normally closed contact is disconnected, and the first energy absorbing support equipment left resistor R 41 The left side resistor R of the second energy absorbing support equipment 51 Parallel circuit connection Figure 6 Pressure sensor resistor parallel circuit, Figure 7 The pressure sensor measurement circuit measures the pressure on the left side of the first energy-absorbing support equipment and the second energy-absorbing support equipment.

[0090] When measuring the pressure on the right side of the first energy-absorbing support equipment and the second energy-absorbing support equipment, first disconnect switch K2 to de-energize the KM1 coil and restore the KM1 contact to its original state. Then close switch K2, and then close switch K4. When K4 is closed, the KM2 coil is energized, the KM2 normally open contact is closed, the KM2 normally closed contact is disconnected, and the resistance R on the right side of the first energy-absorbing support equipment is 42 The resistor R on the right side of the second energy-absorbing support equipment 52 Parallel circuit connection Figure 6 Pressure sensor resistor parallel circuit, Figure 7 The pressure sensor measurement circuit measures the pressure on the right side of the first energy-absorbing support equipment and the second energy-absorbing support equipment.

[0091] This control circuit has the characteristic that the contacts of relays KM1 and KM2 cannot be closed at the same time, which also ensures Figure 6 The two sets of parallel resistors will not be connected to the pressure sensor measurement circuit at the same time.

[0092] Similarly, the method for measuring the pressure on the upper and lower sides of the first energy-absorbing support equipment and the second energy-absorbing support equipment is the same as the method for measuring the pressure on the left and right sides of the first energy-absorbing support equipment and the second energy-absorbing support equipment.

[0093] In actual engineering, the pressure sensors installed on the corresponding sides of the first energy-absorbing support equipment and the second energy-absorbing support equipment are of the same model, but it is difficult to ensure complete accuracy and consistency in production. Therefore, the bridge measurement circuit used in the present invention reduces the influence of the error factor of the pressure sensor. Before use, the pressure sensor and the measurement circuit also need to be experimentally calibrated to ensure that the pressure output after the system calculation is consistent with the pressure borne by the metal column of the support structure.

[0094] The two sensors at corresponding positions of the parallel energy-absorbing support equipment are connected in parallel, and then the resistance after parallel connection is measured as a whole. Compared with a single set of support equipment, the measurement error is reduced.

[0095] During the construction of the underground tunnel, the initial equilibrium state of the surrounding rock was broken, forming Fig. 9 There are four regions: I, II, III, and IV. Among them, region IV is the cross-sectional shape of the tunnel; region III is the area most affected by mining, and this part of the area is also the surrounding rock area in direct contact with the tunnel support structure. The bonding performance between the rocks that make up this part of the surrounding rock is the worst; region II will also be affected by mining, but it is not in direct contact with the tunnel support structure. The rocks that make up this part of the surrounding rock have certain bonding performance, but the bonding performance between the rocks is worse than that of the initial surrounding rock disturbed by construction; region I is the surrounding rock that is not or rarely affected by engineering disturbance. Among them, Fig. 9 The top straight line represents the ground, h1 represents the vertical distance from the ground to the top boundary of surrounding rock I. h2 and h5 represent the vertical distance from the boundary of surrounding rock I to the boundary of surrounding rock II. h3 and h4 represent the vertical distance from the center of surrounding rock to the boundary of surrounding rock II.

[0096] Surrounding rocks I, II, and III all have certain self-supporting capabilities. Therefore, this design takes into account both the self-supporting capabilities of the surrounding rocks and the supporting capabilities of the supporting structures. The relationship between the self-supporting capabilities of surrounding rocks I, II, and III is: I>II>III. Loads that exceed the self-supporting capabilities of the surrounding rocks will act on the supporting structures. This measure of utilizing both the self-supporting capabilities of the surrounding rocks and the flexible supporting capabilities of the supporting structures will greatly reduce the strength of the supporting structures, save support costs, and improve the support benefits of surrounding rock projects.

[0097] Compared with traditional support structures, energy quantification is progressive to a certain extent. Some traditional support structures also consider the self-supporting effect of surrounding rocks when designing and using them, and use support structures to absorb the energy generated by the deformation of surrounding rocks, but this is usually roughly estimated based on experience, and it is difficult to obtain the exact value of the energy absorbed by the support structure. In this way, in order to ensure the absolute safety of the project in production, support structures that can absorb more energy than actually needed will be designed and used. The consequence is likely to increase the strength of the materials used, increase the purchase cost and the work intensity of the workers, which is not conducive to cost savings and also causes waste of materials, resources and energy. After energy quantification, the material parameters of the support structure can be accurately designed according to the energy value to avoid waste, provide accurate solutions for engineering applications, save manpower and material costs, and exert economic and social benefits.

[0098] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0099] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An energy absorbing support equipment, characterized in that: The energy-absorbing support equipment is a frame-shaped structure, and each frame is composed of a number of metal columns, an elastic energy-absorbing unit and a pressure sensor; specifically: the left frame, the right frame, the upper frame and the lower frame are all composed of a number of metal columns, a number of elastic energy-absorbing units and a pressure measurement sensor; wherein the elastic energy-absorbing unit is installed between two adjacent sections of metal columns to measure the energy absorbed by the support equipment; the pressure sensor is installed between two adjacent sections of metal columns to measure the pressure borne by the support equipment; the pressure sensor is used to measure the numerical value of the pressure borne by the surrounding rock on the installed side pillar, and the pressure sensor includes a connecting part and a pressure-bearing part, and the two sides of the pressure-bearing part are connecting parts, and the connecting part is inserted into the metal column and connected to the metal column; the elastic energy-absorbing unit includes an elastic energy-absorbing material and a pressure-coupling gasket, and the elastic energy-absorbing material is connected to the metal column through the pressure-coupling gasket; The calculation formula for the absorbed energy of a single elastic energy absorbing unit is: Wherein, E0 represents the absorbed energy of a single elastic energy absorbing unit, F represents the pressure from the metal column on the elastic energy absorbing material of the single elastic energy absorbing unit, a, b and c represent the length, width and height of the elastic energy absorbing material of the single elastic energy absorbing unit when not subjected to the pressure of the metal column, c' represents the height of the elastic energy absorbing material of the single elastic energy absorbing unit after subjected to the pressure of the metal column, and T represents the elastic modulus of the elastic energy absorbing material of the single elastic energy absorbing unit; The calculation formula for the total absorbed energy of energy-absorbing support equipment is: Wherein, E represents the total absorbed energy of the energy-absorbing support equipment, E1, E2, E3, and E4 represent the absorbed energy of all elastic energy-absorbing units on the left, the absorbed energy of all elastic energy-absorbing units on the upper side, the absorbed energy of all elastic energy-absorbing units on the right, and the absorbed energy of all elastic energy-absorbing units on the lower side, respectively; L1, L2, L3, and L4 represent the deformation of the elastic energy-absorbing materials of all elastic energy-absorbing units on the left, the deformation of the elastic energy-absorbing materials of all elastic energy-absorbing units on the upper side, the deformation of the elastic energy-absorbing materials of all elastic energy-absorbing units on the right, and the deformation of the elastic energy-absorbing materials of all elastic energy-absorbing units on the lower side, respectively; n, q, p, and s represent the total number of elastic energy-absorbing materials of all elastic energy-absorbing units on the left, the total number of elastic energy-absorbing materials of all elastic energy-absorbing units on the upper side, the total number of elastic energy-absorbing materials of all elastic energy-absorbing units on the right, and the total number of elastic energy-absorbing materials of all elastic energy-absorbing units on the lower side, respectively; L 1i , L 2i , L 3i , L 4i They respectively represent the deformation amount of the elastic energy absorbing material of the i-th elastic energy absorbing unit on the left, the deformation amount of the elastic energy absorbing material of the i-th elastic energy absorbing unit on the upper side, the deformation amount of the elastic energy absorbing material of the i-th elastic energy absorbing unit on the right, and the deformation amount of the elastic energy absorbing material of the i-th elastic energy absorbing unit on the lower side.

2. The energy absorbing support equipment according to claim 1, characterized in that: The pressure sensor comprises a connecting portion and a pressure-bearing portion, both sides of the pressure-bearing portion are the connecting portions, and the connecting portions are inserted into the metal column and connected to the metal column.

3. The energy absorbing support equipment according to claim 1, characterized in that: The energy-absorbing support equipment is a rectangular frame structure.

4. The energy absorbing support equipment according to claim 1, characterized in that: The elastic energy absorbing material is wood or rubber.

5. A parallel energy absorption support equipment, characterized in that: include: A measuring circuit and several identical energy-absorbing support equipment as described in any one of claims 1 to 4, wherein the pressure sensor in the energy-absorbing support equipment is a resistance-type pressure sensor, the resistances of the pressure sensors at corresponding positions of each energy-absorbing support equipment are connected in parallel, and the resistance after parallel connection is recorded as the resistance to be measured, and the measuring circuit is used to measure each resistance to be measured to determine the pressure that the parallel energy-absorbing support equipment is borne by.

6. The parallel energy absorbing support equipment according to claim 5, characterized in that: The parallel energy-absorbing support equipment also includes a control circuit, which includes a plurality of relays. The relays include a coil, a normally open contact and a plurality of normally closed contacts. The normally open contact is connected in series with a resistor to be measured, and each normally closed contact is connected in series with the coil control circuit of each of the remaining relays. The resistor to be measured is connected in series with the normally open contact and then connected to the measurement circuit.

7. The parallel energy absorbing support equipment according to claim 6, characterized in that: The measuring circuit is a bridge measuring circuit, a certain bridge arm in the bridge measuring circuit is a measuring bridge arm, and a resistor connected to the measuring bridge arm is the resistor to be measured.

8. The parallel energy absorbing support equipment according to claim 7, characterized in that: The number of energy-absorbing support equipment is two.

9. The parallel energy absorbing support equipment according to claim 8, characterized in that: The relay includes a first relay and a second relay, the first relay includes a first coil, a first normally open contact and a first normally closed contact, and the second relay includes a second coil, a second normally open contact and a second normally closed contact; the control switch K3 is connected in parallel with the first normally open contact and then connected in series with the first coil and the second normally closed contact to form a first control branch, and the control switch K4 is connected in parallel with the second normally open contact and then connected in series with the second coil and the first normally closed contact to form a second control branch; the first control branch and the second control branch are connected in parallel to a power supply circuit.

10. The parallel energy absorbing support equipment according to claim 9, characterized in that: A main control switch K2 is also connected in series in the power supply circuit.

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