Hoop shock absorber with built-in anti-falling structure

Abstract

The hoop shock absorber with the built-in anti-falling structure comprises two sets of fixing bolts, rubber and a movable limiting mechanism, and the fixing bolts are connected to a top plate and a bottom plate in a penetrating mode. When the hoop shock absorber with the built-in anti-falling structure runs, vibration caused by running of a compressor can cause forced vibration of a machine body, vibration from three directions of a vehicle body can cause forced vibration of the machine body and the compressor, and a rubber part and a spring can deform; an anti-falling structure, namely a structure jointly composed of a fixing bolt, a top plate, a bottom plate, rubber, a spring and a set screw, also participates in damping with a small magnitude, and when a machine body and a compressor are subjected to large impact from three directions of a vehicle body, the deformation amount of a damper may exceed the amplitude in the three directions during normal operation at the moment; and even when rubber cracks or fractures are caused, the anti-falling structure can ensure that the compressor and the machine body cannot be completely separated, so that other parts are damaged or safety accidents are caused.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit, in particular to a clamp shock absorber with a built-in anti-slip structure. Background Art

[0002] Rail transit and automobile transportation are important components of the national transportation network. When the vehicle is running, the vibration or impact of the vehicle body caused by external factors (track / road surface, acceleration / deceleration, turning) affects the air-conditioning unit, and the vibration from the operation of the compressor affects the air-conditioning unit. These vibrations and impacts will not only cause noise, but may also damage the internal parts of the unit, and vibration reduction is required. This is a problem that rail transit must solve. After searching, it is found that the shock-absorbing equipment in the prior art is typically such as publication number CN107725328B, an air-conditioning compressor shock-absorbing seat, including a bottom pad, a connecting plate, a plurality of adjustment plates and a plurality of mounting plates, wherein the bottom pad is fixedly connected to the lower surface of the connecting plate, and the plurality of adjustment plates are fixedly connected to the upper surface of the connecting plate at intervals, and the mounting plate is fixedly connected to the adjustment plate according to the position of the mounting foot of the air-conditioning compressor; the bottom pad, the connecting plate, the adjustment plate and the mounting plate all include a plurality of skeleton layers arranged at intervals and a high-damping shock-absorbing rubber layer located between adjacent skeleton layers. The vibration of the compressor is absorbed and eliminated layer by layer by using mounting plates, adjustment plates, connecting plates and bottom pads, and the noise generated by the vibration can also be absorbed at the same time; its main feature is the overall structure formed by the interval arrangement of the skeleton layer and the high damping shock-absorbing rubber layer, which can absorb vibration and noise at each layer, and can enhance the overall stability and rigidity to ensure the operational reliability of the compressor.

[0003] In summary, existing shock absorbers of similar types have shock-absorbing rubber between the top plate and the bottom plate. Due to the influence of factors such as the use environment, service life, and installation, there is a risk of rubber failure causing the compressor to separate from the body. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a clamp shock absorber with a built-in anti-slip structure to solve the problem that the existing shock absorber of similar type proposed in the above background technology has shock-absorbing rubber between the top plate and the bottom plate. Due to the influence of factors such as the use environment, service life, and installation, there is a risk of rubber failure causing the compressor to separate from the body.

[0005] To achieve the above object, the present invention provides the following technical solution: a clamp shock absorber with a built-in anti-slip structure, comprising a fixing bolt, a rubber and a movable limiting mechanism,

[0006] The fixing bolts are provided in two groups, and the fixing bolts are connected through the top plate and the bottom plate, and the top plate is arranged above the bottom plate, the rubber is arranged between the top plate and the bottom plate, and a spring is arranged on the inner side of the rubber, and the spring is connected to the fixing bolts through a set screw.

[0007] Preferably, the fixing bolt is provided with an extended thread, and the fixing bolt is welded to the top plate and the bottom plate.

[0008] Preferably, lifting plates are provided on the outer sides of the top plate and the bottom plate, and the lifting plates are slidably connected to the fixing bolts.

[0009] Preferably, the rubber is cylindrical, and the connection between the rubber and the top plate and the bottom plate is vulcanized.

[0010] Preferably, both upper and lower ends of the spring are bent, and the bent portions at both ends of the spring are respectively connected to the bottom of the fixing bolt connected to the top plate and the top of the fixing bolt connected to the bottom plate.

[0011] Preferably, the set screw passes through the connecting spring and the fixing bolt, and the fixing bolt is threadedly connected to the set screw.

[0012] Preferably, a first anti-collision block is connected to a side of the lifting plate away from the lengthened thread, and a second anti-collision block is connected to a side of the lifting plate close to the lengthened thread.

[0013] Preferably, the movable limiting mechanism includes a protective cover, a slide groove, a connecting seat, a card slot and a through hole, and a slide groove is opened on the inner side of the protective cover, and the upper and lower ends of the protective cover are connected to the connecting seat, and the connecting seat is opened on the card slot, and the card slot is connected to the through hole, and the through hole is opened at the top and bottom of the connecting seat.

[0014] Preferably, the protective covers are symmetrically arranged in two groups, and the protective covers are arranged on the outside of the top plate and the bottom plate, the top plate and the bottom plate are both slidably connected to the inside of the slide groove, and a pressure sensor is installed on the top plate, the pressure sensor is arranged corresponding to the protective pad, and the pressure sensor is electrically connected to the buzzer, and the buzzer is installed on one side outer wall of the protective cover, the protective pad is installed on the inner top of the protective cover, and the protective cover is connected to the connecting seat through a reinforcement plate, the reinforcement plates are evenly distributed at the connection between the protective cover and the connecting seat, and the cross-section of the reinforcement plate is triangular.

[0015] Preferably, the card slot is engaged and connected with the lifting plate, and the lifting plate is connected with the connecting seat through a connecting piece, the connecting piece is threadedly connected to the inside of the through hole, and two groups of connecting pieces are symmetrically arranged.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the clamp shock absorber with built-in anti-slip structure,

[0017] (1) The present invention can effectively solve the problem of existing shock absorbers of similar types by using a combination of fixing bolts, a top plate, a bottom plate, rubber, a spring and a set screw. There is a shock-absorbing rubber between the top plate and the bottom plate. Due to the influence of factors such as the use environment, the service life, and the installation, there is a risk of the compressor and the body being separated due to the failure of the rubber. When static, the shock absorber bears the weight of the compressor. At this time, due to the gravity of the compressor, the shock absorber rubber is compressed, and the spring is also compressed. When running, the vibration caused by the operation of the compressor itself will cause the forced vibration of the body and the three vibrations from the body. The vibration in three directions causes the machine body and the compressor to be forced to vibrate, which will cause the rubber part of the shock absorber and the spring to undergo corresponding periodic deformation. The anti-slip structure, which is composed of fixing bolts, top plate, bottom plate, rubber, spring and set screws, also participates in the small-scale shock absorption. When the machine body and the compressor are subjected to a large impact from the three directions of the vehicle body, the deformation of the shock absorber may exceed the amplitude of the three directions during normal operation, and even cause the rubber to crack or break. The anti-slip structure can ensure that the compressor and the machine body cannot be completely separated, causing damage to other components or causing safety accidents.

[0018] (2) The present invention can effectively solve the problem of the single anti-slip structure of the existing structure by using the movable limit mechanism, the first anti-collision block and the second anti-collision block in coordination. When the rubber and the spring deform and shrink to perform shock absorption and buffering, the top plate and the bottom plate drive the fixed bolts connected thereto to slide up and down along the slide groove inside the protective cover. The protective cover plays a role in limiting its movement range, thereby ensuring that the compressor and the body cannot be completely separated when the rubber cracks or breaks, thereby preventing other components from being damaged or causing safety accidents. At the same time, the first anti-collision block and the second anti-collision block both play a role in buffering protection, thereby preventing the lifting plate from directly contacting and colliding with the nuts connected to the fixed bolts and the top plate and the bottom plate during the up and down movement of the lifting plate, thereby reducing wear and avoiding noise.

[0019] (3) The present invention can effectively solve the problem of the existing compressor shock absorber not being able to detect the damage of the shock absorbing rubber in the first time through the coordinated use of the pressure sensor and the buzzer, thus posing a safety hazard. When the rubber is cracked or broken, the amplitude of the upper and lower plates moving up and down becomes larger, so that the pressure sensor and the corresponding protective pad collide and squeeze. When the pressure sensor detects that the pressure reaches the set value, the pressure sensor will transmit this signal to the controller, and the controller will control the buzzer to sound to warn the surrounding staff and remind the staff to repair it, thereby avoiding device failure due to rubber damage, thereby enriching the functionality of the device and optimizing the structure of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an isometric view of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the connection relationship between the fixing bolt, the spring and the set screw of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the movable limiting mechanism of the present invention;

[0023] Figure 4 is an isometric view of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. fixing bolt; 2. top plate; 3. bottom plate; 4. rubber; 5. spring; 6. set screw; 7. extended thread; 8. lifting plate; 9. first anti-collision block; 10. second anti-collision block; 11. movable limiting mechanism; 1101. protective cover; 1102. slide groove; 1103. connecting seat; 1104. card slot; 1105. through hole; 12. connecting piece; 13. reinforcement plate; 14. pressure sensor; 15. protective pad; 16. buzzer. 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] See also Figure 1-5 The present invention provides a technical solution: a clamp shock absorber with a built-in anti-slip structure, embodiment 1

[0028] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, two groups of fixing bolts 1 are provided, and the fixing bolts 1 penetrate and connect the top plate 2 and the bottom plate 3. At the same time, the top plate 2 is arranged above the bottom plate 3, the rubber 4 is arranged between the top plate 2 and the bottom plate 3, and a spring 5 is arranged on the inner side of the rubber 4. At the same time, the spring 5 is connected to the fixing bolt 1 through a set screw 6.

[0029] In a further embodiment, an extended thread 7 is provided on the fixing bolt 1 , and the fixing bolt 1 is welded to the top plate 2 and the bottom plate 3 .

[0030] In a further embodiment, a lifting plate 8 is disposed on the outer sides of the top plate 2 and the bottom plate 3 , and the lifting plate 8 is slidably connected to the fixing bolts 1 .

[0031] In a further embodiment, the rubber 4 is cylindrical, and the connection between the rubber 4 and the top plate 2 and the bottom plate 3 is vulcanized.

[0032] In a further embodiment, both upper and lower ends of the spring 5 are bent, and the bent portions at both ends of the spring 5 are respectively connected to the bottom of the fixing bolt 1 connected to the top plate 2 and the top of the fixing bolt 1 connected to the bottom plate 3 .

[0033] In a further embodiment, the set screw 6 penetrates the connecting spring 5 and the fixing bolt 1 , and the fixing bolt 1 is threadedly connected to the set screw 6 .

[0034] In a further embodiment, a first anti-collision block 9 is connected to a side of the lifting plate 8 away from the lengthened thread 7 , and a second anti-collision block 10 is connected to a side of the lifting plate 8 close to the lengthened thread 7 .

[0035] Specifically, the anti-slip mechanism is assembled before use, and the specific operation is as follows: the fixing bolt 1 has a threaded hole for installing the spring 5 and fixing the spring 5 at one end of the rubber 4, and the anti-slip mechanism is composed of the fixing bolt 1, the spring 5 and the set screw 6 for fixing the spring 5. The spring 5 is installed with the fixing bolt 1 welded with the top plate 2 and the bottom plate 3, and one end of the spring 5 is bent with a special tool and then fixed with the set screw 6. The anti-slip structure is vulcanized with the top plate 2 and the bottom plate 3 and the rubber 4. During installation, the fixing nut at the bottom of the shock absorber is connected to the body frame, and the upper part of the shock absorber is connected to the compressor mounting foot or the compressor tray.

[0036] Specifically, when the shock absorber is static, the weight of the compressor is usually carried by multiple shock absorbers. At this time, due to the gravity of the compressor, the shock absorber rubber 4 is compressed, and the spring 5 is also compressed (because the wire diameter of the spring 5 used is only 1.5mm, its stiffness is much smaller than that of the rubber 4 part, less than 10%). During operation, the vibration caused by the operation of the compressor itself will cause the forced vibration of the body and the vibration from the three directions of Z, X and Y of the body will cause the body and the compressor to be forced to vibrate, which will cause the shock absorber rubber 4 part and the spring 5 to also make corresponding periodic deformation, and the anti-slip structure will also participate in the shock absorption of a small magnitude. When the body and the compressor are subjected to a large impact from the three directions of Z, X and Y of the body, the deformation of the shock absorber may exceed the amplitude of the three directions during normal operation, and even cause the rubber 4 to crack or break. The anti-slip structure can ensure that the compressor and the body cannot be completely separated, causing damage to other components or causing safety accidents. The safety performance of the anti-slip structure is calculated based on the basic rubber 4 body Ф40*32.5h, and the spring 5 is planned to use 82B (tensile strength exceeds 2000Mpa).

[0037] The maximum vertical rated load permissible for this device is designed with high hardness, and the dynamic 3g is: 60kg, calculated at 8%d permissible dynamic deformation of 2mm, d is the thickness of rubber 4, and the maximum tensile strength of the pure rubber 4 part is calculated according to the bonding strength of rubber 4 and metal 4Mpa: σs=5000N510kgf, and the dynamic safety factor is about 2.8, which can be not less than 1 in actual design), and the maximum tensile strength of the 1.5 wire diameter spring 5 is not less than 3540N, and the dynamic safety factor is 2, which is sufficient; the maximum permissible deformation in the shear direction of rubber 4 (30%, permanent deformation after exceeding is 8mm, the maximum rated load is designed with high hardness, dynamic 5g, and dynamic safety factor 1 is: 34kg. If the rated load is to reach 60kg in the Z direction, the dynamic safety factor is only 0.56, which is low; this shock absorber comes with Although the anti-slip structure also participates in shock absorption, due to structural limitations, the horizontal stiffness of its spring 5 is very small, and the amount of shock absorption it participates in is also small, and it cannot significantly improve the load capacity. However, once the rubber 4 breaks, the anti-slip structure has a dynamic safety factor of 2, so that the top plate 2 and the bottom plate 3 are still connected together. (Because the top plate 2, the bottom plate 3, and the fixing bolts 1 are all made of metal stainless steel, and their material strength is much higher than that of the rubber 4, the relevant strength calculation is not performed here.) In the above example analysis, if there is no anti-slip structure, the maximum load of the product is 34kg, and the lowest safety factor in the X direction is only 1, and once the rubber 4 breaks, there will be a risk that the top plate 2 and the bottom plate 3 will separate. The anti-slip structure of this product is mainly used to prevent the compressor from separating from the body relatively safely when the rubber 4 fails, which significantly improves the safety of the product.

[0038] The basic type of the new shock absorber has a rated load of less than 34kg, which can be achieved by adjusting the hardness of the rubber 4. Since the anti-slip structure is small in magnitude in shock absorption, the load capacity cannot be increased. If the rated load exceeds 34kg, the outer diameter or height of the rubber 4 can be increased to meet the requirements.

[0039] Embodiment 2

[0040] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0041] like Figure 1 , Figure 3 and Figure 5 As shown, in a further embodiment, the movable limiting mechanism 11 includes a protective cover 1101, a slide groove 1102, a connecting seat 1103, a card slot 1104 and a through hole 1105, and a slide groove 1102 is opened on the inner side of the protective cover 1101, and the upper and lower ends of the protective cover 1101 are connected to the connecting seat 1103, and a card slot 1104 is opened on the connecting seat 1103, and the card slot 1104 is connected to the through hole 1105, and the through hole 1105 is opened at the top and bottom of the connecting seat 1103.

[0042] In a further embodiment, two groups of protective covers 1101 are symmetrically arranged, and the protective covers 1101 are arranged on the outside of the top plate 2 and the bottom plate 3. The top plate 2 and the bottom plate 3 are both slidably connected to the inside of the slide groove 1102, and a pressure sensor 14 is installed on the top plate 2. The pressure sensor 14 and the protective pad 15 are arranged correspondingly, and the pressure sensor 14 is electrically connected to the buzzer 16. At the same time, the buzzer 16 is installed on the outer wall of one side of the protective cover 1101, and the protective pad 15 is installed on the inner top of the protective cover 1101, and the protective cover 1101 is connected to the connecting seat 1103 through the reinforcement plate 13. The reinforcement plates 13 are evenly spaced at the connection between the protective cover 1101 and the connecting seat 1103, and the cross-section of the reinforcement plate 13 is triangular, and the reinforcement plate 13 plays a role in reinforcing the connection.

[0043] In a further embodiment, the card slot 1104 is engaged with the lifting plate 8, and the lifting plate 8 is connected to the connecting seat 1103 through a connecting piece 12, the connecting piece 12 is threadedly connected to the inside of the through hole 1105, and the connecting piece 12 is symmetrically arranged in two groups to facilitate the lifting plate 8.

[0044] Specifically, when the rubber 4 and the spring 5 deform and shrink to perform shock absorption and buffering, the top plate 2 and the bottom plate 3 drive the fixed bolts 1 connected thereto to slide up and down along the slide groove 1102 inside the protective cover 1101. The protective cover 1101 serves to limit its range of movement, thereby ensuring that the compressor cannot be completely separated from the body when the rubber 4 cracks or breaks, thereby preventing damage to other components or causing safety accidents. At the same time, the first anti-collision block 9 and the second anti-collision block 10 both serve as buffering protection to prevent the lifting plate 8 from directly contacting and colliding with the nuts connected to the fixed bolts 1 and the top plate 2 and the bottom plate 3 during the up and down movement, thereby reducing wear and avoiding noise.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamp shock absorber with a built-in anti-slip structure, comprising a fixing bolt (1), a rubber (4) and a movable limiting mechanism (11), characterized in that: The fixing bolts (1) are provided in two groups, and the fixing bolts (1) are connected through the top plate (2) and the bottom plate (3), and the top plate (2) is arranged above the bottom plate (3), and the rubber (4) is arranged between the top plate (2) and the bottom plate (3), and a spring (5) is arranged on the inner side of the rubber (4), and the spring (5) is connected to the fixing bolts (1) through a set screw (6).

2. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: The fixing bolt (1) is provided with an extended thread (7), and the fixing bolt (1) is welded to the top plate (2) and the bottom plate (3).

3. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: A lifting plate (8) is provided on the outer sides of the top plate (2) and the bottom plate (3), and the lifting plate (8) is slidably connected to the fixing bolt (1).

4. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: The rubber (4) is cylindrical, and the connection between the rubber (4) and the top plate (2) and the bottom plate (3) is vulcanized.

5. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: The upper and lower ends of the spring (5) are both bent, and the bent portions at the upper and lower ends of the spring (5) are respectively connected to the bottom of the fixing bolt (1) connected to the top plate (2) and the top of the fixing bolt (1) connected to the bottom plate (3).

6. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: The set screw (6) passes through the connecting spring (5) and the fixing bolt (1), and the fixing bolt (1) is threadedly connected to the set screw (6).

7. The clamp shock absorber with a built-in anti-slip structure according to claim 3, characterized in that: A first anti-collision block (9) is connected to the side of the lifting plate (8) away from the lengthened thread (7), and a second anti-collision block (10) is connected to the side of the lifting plate (8) close to the lengthened thread (7).

8. The clamp shock absorber with a built-in anti-slip structure according to claim 1, characterized in that: The movable limiting mechanism (11) comprises a protective cover (1101), a slide groove (1102), a connecting seat (1103), a clamping groove (1104) and a through hole (1105), wherein the slide groove (1102) is provided inside the protective cover (1101), and the upper and lower ends of the protective cover (1101) are connected to the connecting seat (1103), and the clamping groove (1104) is provided on the connecting seat (1103), and the clamping groove (1104) is connected to the through hole (1105), and the through hole (1105) is provided at the top and bottom of the connecting seat (1103).

9. The clamp shock absorber with a built-in anti-slip structure according to claim 8, characterized in that: The protective cover (1101) is symmetrically arranged in two groups, and the protective cover (1101) is arranged on the outside of the top plate (2) and the bottom plate (3). The top plate (2) and the bottom plate (3) are both slidably connected to the inside of the slide groove (1102), and a pressure sensor (14) is installed on the top plate (2). The pressure sensor (14) and the protective pad (15) are arranged correspondingly, and the pressure sensor (14) is electrically connected to the buzzer (16). At the same time, the buzzer (16) is installed on the outer wall of one side of the protective cover (1101), and the protective pad (15) is installed on the inner top of the protective cover (1101). The protective cover (1101) is connected to the connecting seat (1103) through a reinforcing plate (13). The reinforcing plates (13) are evenly spaced at the connection between the protective cover (1101) and the connecting seat (1103), and the cross section of the reinforcing plate (13) is triangular.

10. The clamp shock absorber with built-in anti-slip structure according to claim 8, characterized in that: The card slot (1104) is engaged with the lifting plate (8), and the lifting plate (8) is connected to the connecting seat (1103) via a connecting piece (12), the connecting piece (12) is threadedly connected to the inside of the through hole (1105), and two groups of connecting pieces (12) are symmetrically arranged.

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