Limiting device and fire truck

Abstract

The utility model relates to a limiting device and a fire truck, and relates to the field of fire trucks. The limiting device proposed by the utility model includes a first connecting member, a second connecting member, a first shock absorbing member and a first fastener; the first end of the first connecting member is provided with a first connecting hole; the second end of the second connecting member is provided with a second connecting hole; the first shock absorbing member is arranged between the first connecting hole and the second connecting hole; the first fastener passes through the first connecting hole, the first shock absorbing member and the second connecting hole in sequence and is connected to the second fastener; a gap is arranged between the top surface of the first connecting member and the head of the first fastener. By providing the first shock absorbing member and the gap, the first connecting member and the second connecting member are buffered in the vertical direction, that is, the liquid tank body and the first body are buffered; at the same time, the external impact caused by the following second connecting member on the first connecting member and the first fastener is also reduced, ensuring that the limiting device as a whole will not be significantly deformed or broken.

Description

Technical Field

[0001] The utility model relates to the field of fire trucks, and in particular to a limiting device and a fire truck. Background Art

[0002] Many fire truck models on the market adopt a segmented fire truck body design. This design makes the liquid tank part, equipment box part, pump room part and independent passenger compartment part of the fire truck independent from each other, reflecting the flexibility of fire truck design. For the equipment box, pump room, and independent passenger compartment part, they are generally hoisted to the chassis by rigid connection, which is more stable and not prone to displacement or skew.

[0003] For the lifting of liquid tanks, many models use flexible connections to lift them to the chassis. This method will cause the liquid tank to sink when overloaded, resulting in a significant height difference between the equipment box, pump room, and independent passenger compartment of the fire truck. At the same time, the liquid tank may sway and jump during the driving process of the vehicle, in which case the liquid tank may collide with other parts of the vehicle. Over time, even if the vehicle is stationary, the liquid tank may become skewed.

[0004] The inventors have found that the tilt or displacement of the liquid tank will generate a pulling torque, which will directly act on other car bodies or the limiting devices between car bodies, possibly causing damage or deformation of the limiting devices and the car bodies. Utility Model Content

[0005] The utility model aims to provide a limiting device and a fire truck, which can buffer the liquid tank body and the first body when the liquid tank body sinks or jumps; and at the same time avoid deformation or rupture of the limiting device as a whole.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In the first aspect, the utility model proposes a limiting device, including a first connecting member, a second connecting member, a first shock absorber and a first fastener; a first connecting member is provided at the first end with a first connecting hole, and the first connecting member is used to connect to a first compartment; a second connecting member is provided at the second end with a second connecting hole, and the second connecting member is used to connect to a liquid tank compartment; the first shock absorber is arranged between the first connecting hole and the second connecting hole; the first fastener passes through the first connecting hole, the first shock absorber and the second connecting hole in sequence and is connected to the second fastener; a gap is provided between the top surface of the first connecting member and the head of the first fastener.

[0008] Optionally, the limiting device further includes a second shock absorbing member, which is sleeved on the first fastening member and arranged on the top of the first connecting member.

[0009] Optionally, a first gasket is provided between the top of the second shock absorbing member and the head of the first fastening member.

[0010] Optionally, the second shock absorbing member includes a first body and a second body connected to each other;

[0011] The diameter of the first body is larger than the diameter of the first connecting hole, and the diameter of the second body is smaller than the diameter of the first connecting hole;

[0012] The top surface of the first body abuts against the head of the first fastener, and the second body passes through the first connecting hole and abuts against the first shock absorbing member.

[0013] Optionally, a second inclined surface is provided on the bottom outer edge of the second body.

[0014] Optionally, a second inclined surface is provided on the bottom outer edge of the first shock-absorbing member.

[0015] Optionally, the distance of the gap is 4 to 8 mm.

[0016] Optionally, the first connecting member includes a first plate body, a second plate body and a third plate body connected to each other;

[0017] The second plate body is arranged obliquely, and reinforcing ribs are arranged at the bottom of the first plate body and the second plate body.

[0018] Optionally, the second connecting hole is a strip hole or a round hole.

[0019] In a second aspect, the utility model further proposes a fire truck, comprising a first compartment, a liquid tank compartment and any one of the above-mentioned limiting devices, wherein at least two of the limiting devices are arranged at intervals between the first compartment and the liquid tank compartment;

[0020] The second end of the first connecting member is connected to the first compartment;

[0021] The second end of the second connecting member is connected to the liquid tank body.

[0022] The beneficial effects of the embodiments of the utility model are:

[0023] The limit device achieves buffering of the first connecting member and the second connecting member in the vertical direction by setting the first shock-absorbing member and the gap between the first connecting member and the head of the first fastener, that is, buffering of the liquid tank body and the first body; at the same time, it also reduces the external impact of the follow-up second connecting member on the first connecting member and the first fastener, ensuring that the limit device as a whole will not be obviously deformed or broken.

[0024] The fire truck has two spaced-apart limiting devices between the first compartment and the liquid tank compartment to ensure the connection stability between the two when the liquid tank compartment sways or tilts, thereby limiting the liquid tank compartment and ensuring that the liquid tank compartment does not have obvious displacement or tilt. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of a fire truck according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A partial schematic diagram of the middle part;

[0028] Figure 3 This is a schematic diagram of the structure of the limit device of the embodiment of the utility model;

[0029] Figure 4 This is a cross-sectional view of a position limiting device according to an embodiment of the utility model;

[0030] Figure 5 This is a first schematic diagram of a first shock absorbing member and a second shock absorbing member according to an embodiment of the utility model;

[0031] Figure 6 This is a second schematic diagram of the first shock absorbing component and the second shock absorbing component of the embodiment of the utility model.

[0032] Icons: 010-fire truck; 011-first compartment; 012-liquid tank compartment; 013-gap; 100-limiting device; 110-first connecting member; 111-first plate; 112-second plate; 113-third plate; 114-reinforcing ribs; 115-third fastener; 116-first elastic gasket; 120-second connecting member; 121-fourth fastener; 122-second elastic gasket; 130-first shock absorber; 131-first inclined plane; 140-first fastener; 141-second fastener; 142-first gasket; 150-second shock absorber; 151-first body; 152-second body; 153-second inclined plane; 160-gap. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] A limit device 100 is set between adjacent compartments of the fire truck 010. When the adjacent compartments sink or jump, the limit device 100 is used to achieve vertical buffering by utilizing the gap 160 of the limit device 100. When the adjacent compartments sway or tilt, the limit device 100 is used as a whole to achieve horizontal buffering.

[0040] When the liquid tank compartment 012 of the fire truck 010 is unloaded, it is assumed that the top of the first compartment 011 and the top of the liquid tank compartment 012 are flush.

[0041] When the liquid tank body 012 of the fire truck 010 is overloaded, there will be a significant height difference between the top of the first body 011 and the top of the liquid tank body 012; at the same time, during the driving of the fire truck 010, the liquid tank body 012 may sway and jump, which may cause friction with other parts of the vehicle; at the same time, even if the fire truck 010 is in a stationary state, the liquid tank body 012 may be skewed. The skewness or displacement of the liquid tank body 012 will generate a pulling torque, which will directly act on the liquid tank body 012 or the limiting device 100 between the first body 011 and the liquid tank body 012, which may cause damage or deformation of the limiting device 100 and the vehicle body.

[0042] Therefore, please refer to Figure 1 The utility model proposes a limit device 100 and a fire truck 010, which can effectively limit the displacement of the fire liquid tank when it is overloaded, especially the situation of swinging and tilting, and at the same time have a buffering effect to avoid damage.

[0043] Please refer to Figure 1The utility model proposes a fire truck 010, comprising a first body 011, a liquid tank body 012 and a limiting device 100, wherein at least two limiting devices 100 are arranged at intervals between the first body 011 and the liquid tank body 012; the second end of the first connecting member 110 is connected to the first body 011; and the second end of the second connecting member 120 is connected to the liquid tank body 012.

[0044] It can be understood that the two spaced-apart limiting devices 100 can ensure the connection stability between the first compartment 011 and the liquid tank compartment 012, and limit the liquid tank compartment 012, thereby ensuring that the liquid tank compartment 012 will not be significantly displaced or skewed.

[0045] In this embodiment, the fire truck 010 includes a first compartment 011 and at least one liquid tank compartment 012 .

[0046] Optionally, refer to Figure 1-Figure 2 When the fire truck 010 includes a plurality of liquid tank compartments 012 , at least one limiting device 100 is provided between the top of the last liquid tank compartment 012 and the top of the first compartment 011 .

[0047] Optionally, the fire truck 010 may also include a first compartment 011 and a liquid tank compartment 012 , and at least one limiting device 100 is directly disposed between the top of the first compartment 011 and the top of the liquid tank compartment 012 .

[0048] In this embodiment, please refer to Figure 1-Figure 2 Two limiting devices 100 are arranged between the top of the first compartment 011 and the top of the liquid tank compartment 012, and the two limiting devices 100 are arranged at intervals.

[0049] Optionally, the two limiting devices 100 are respectively arranged near the left and right edges of the two compartments, and one limiting device 100 is arranged at the left edge and the other is arranged at the right edge. For example, when the width of the first compartment 011 and the tank compartment 012 is 2.5m, the interval distance between the two limiting devices 100 ranges from 1.8m to 1.9m; ​​of course, if there are other components within this distance range and the other components cannot be moved, the distance range of the left and right intervals can be appropriately shortened.

[0050] Of course, in other embodiments, a limiting device 100 is provided between the top of the first compartment 011 and the top of the liquid tank compartment 012, or three, four, or other equal number of limiting devices 100 are provided at intervals, and the number of limiting devices 100 can be selected and set according to specific needs.

[0051] In this embodiment, the fire truck 010 includes a limiting device 100 .

[0052] Please refer to Figure 2-Figure 3 A limiting device 100 provided in this embodiment includes a first connecting member 110, a second connecting member 120, a first shock absorber 130 and a first fastener 140; a first connecting hole is provided at the first end of the first connecting member 110, and the first connecting member 110 is used to connect to the first compartment 011; a second connecting hole is provided at the second end of the second connecting member 120, and the second connecting member 120 is used to connect to the liquid tank compartment 012; the first shock absorber 130 is arranged between the first connecting hole and the second connecting hole; the first fastener 140 passes through the first connecting hole, the first shock absorber 130 and the second connecting hole in sequence and is connected to the second fastener 141; a gap 160 is provided between the top surface of the first connecting member 110 and the head of the first fastener 140.

[0053] The first connecting member 110 is connected to the first compartment 011 , the second connecting member 120 is connected to the liquid tank compartment 012 , and the first connecting member 110 and the second connecting member 120 are connected via a first fastener 140 and a second fastener 141 .

[0054] It is understandable that when the tank body 012 sinks or bounces, the tank body 012 drives the second connector 120 to sink or bounce together. By setting the first shock absorber 130 and the gap 160 between the first connector 110 and the first fastener 140 head, the first connector 110 and the second connector 120 are buffered in the vertical direction, and the external impact on the first connector 110 and the second connector 120 is reduced, ensuring that the limiting device 100 as a whole will not be significantly deformed or broken. In addition, it is ensured that when the tank body 012 is skewed or displaced, the damage or deformation of the limiting device 100 body, the tank body 012 and the first body 011 caused by the pulling torque generated by it is avoided.

[0055] In this embodiment, please refer to Figure 3-Figure 4 The limiting device 100 includes a first connecting member 110 .

[0056] In this embodiment, the first connecting member 110 includes a first plate 111, a second plate 112, and a third plate 113 connected to each other. The first plate 111, the second plate 112, and the third plate 113 are integrally formed plates; after the first connecting member 110 is bent twice, the first plate 111 and the second plate 112, as well as the second plate 112 and the third plate 113 are bent; wherein the two bendings cause the second plate 112 to be tilted, so that the height of the first plate 111 is higher than the third plate 113 and the second connecting member 120, so that a certain height is formed between the first plate 111 and the second connecting member 120 and used to install the first shock absorber 130.

[0057] Specifically, please refer to Figure 3, the first end of the first connecting member 110 is the end of the first plate 111, and the second end is the end of the third plate 113. The first plate 111 is provided with a first connecting hole, and the aperture of the first connecting hole is larger than the diameter of the second body 152 of the second shock absorber 150. The third plate 113 is provided with a plurality of first mounting holes, so that the first connecting member 110 is fixedly connected to the first compartment 011 through a plurality of third fasteners 115 passing through the plurality of first mounting holes. It is understood that, please refer to Figure 2 When fixing the first connecting member 110 , the third plate 113 is fixed on the first body 011 , and the first plate 111 is extended and located at the gap 013 between the first body 011 and the liquid tank body 012 .

[0058] Optionally, the third fastener 115 may be a fastener such as a matching hexagonal head bolt and hexagonal nut, or a screw.

[0059] Optionally, a first elastic gasket 116 is provided between the head of the third fastener 115 and the liquid tank body 012 .

[0060] Optionally, refer to Figure 3-Figure 4 A reinforcing rib 114 is provided at the bottom of the first plate body 111 and the second plate body 112. The reinforcing rib 114 can strengthen the overall strength of the first connecting member 110 to prevent the first connecting member 110 from being damaged or deformed when impacted.

[0061] In this embodiment, the first connecting member 110 is an integrally formed sheet metal structure.

[0062] In this embodiment, please refer to Figure 2-Figure 4 The limiting device 100 includes a second connecting member 120 .

[0063] In this embodiment, please refer to Figure 2 The second connecting member 120 is a rectangular plate; a second connecting hole is set at the first end of the second connecting member 120; a plurality of second mounting holes are set at the second end of the second connecting member 120, so that the second connecting member 120 is fixedly connected to the liquid tank body 012 through a plurality of fourth fasteners 121 passing through the plurality of second mounting holes.

[0064] It can be understood that when fixing the second connecting member 120, the second end of the second connecting member 120 is fixed on the liquid tank body 012, and the first end of the second connecting member 120 is extended and located in the gap 013 between the first body 011 and the liquid tank body 012; wherein, when installing the first connecting member 110 and the second connecting member 120, it is necessary to align the center of the first connecting hole and the center of the second connecting hole.

[0065] Optionally, the fourth fastener 121 may be a fastener such as a matching hexagonal head bolt, a hexagonal nut, or a screw.

[0066] Optionally, a second elastic gasket 122 is provided between the head of the fourth fastener 121 and the liquid tank body 012 .

[0067] In this embodiment, the second connection hole is a strip hole. It is understandable that when the tank body 012 is swayed and tilted, the second connection member 120 and the first fastener 140 will be driven to sway and tilt together; the provision of the strip-shaped second connection hole allows the second connection member 120 and the first fastener 140 to still have a certain tendency to move, thereby preventing accidental damage.

[0068] Of course, in other embodiments, the second connecting hole may also be a round hole.

[0069] In this embodiment, please refer to Figure 3-Figure 4 The limiting device 100 includes a first fastener 140 and a second fastener 141. The first fastener 140 includes a stem and a head; wherein the stem of the first fastener 140 passes through the second shock absorber 150, the first connecting hole, the first shock absorber 130 and the second connecting hole in sequence and then is connected to the second fastener 141.

[0070] Optionally, the first fastener 140 may be a fastener such as a hexagonal bolt or a screw, and the second fastener 141 may be a hexagonal locking nut or a nut that matches the first fastener 140 .

[0071] In this embodiment, please refer to Figure 4-Figure 6 The limiting device 100 includes a first shock absorbing member 130 .

[0072] In this embodiment, the first shock absorbing member 130 is a cylindrical structure, and the center of the circle is provided with a first through hole for passing the first fastener 140. The first shock absorbing member 130 is disposed between the bottom surface of the first body 151 and the top surface of the second connecting member 120, and is used to buffer the second connecting member 120 that sinks or bounces together with the tank body 012.

[0073] Optionally, refer to Figure 5-Figure 6 The bottom outer edge of the first shock absorber 130 is provided with a first inclined surface 131; such a configuration enables the first shock absorber 130 to have good fatigue resistance and impact resistance, and can effectively extend the service life.

[0074] In this embodiment, please refer to Figure 4 The second shock absorbing member 150 is disposed in the gap 160 between the first connecting member 110 and the first fastening member 140. Of course, in other embodiments, the second shock absorbing member 150 may not be disposed.

[0075] Optionally, the distance of the gap 160 is 4 to 8 mm. In this embodiment, the distance of the gap 160 is preferably 5 mm.

[0076] In this embodiment, please refer to Figure 4-Figure 6 The limiting device 100 includes a second shock absorbing member 150 , which is sleeved on the first fastening member 140 and disposed on the top of the first connecting member 110 .

[0077] Optionally, refer to Figure 5-Figure 6 The second shock absorber 150 includes a first body 151 and a second body 152 connected to each other, and the integrated first body 151 and second body 152 are provided with a second through hole for sleeve connection with the first fastener 140; wherein the diameter of the first body 151 is larger than the diameter of the first connecting hole, the top surface of the first body 151 abuts against the head of the first fastener 140, and the bottom surface of the first body 151 is connected to the top surface of the second body 152; wherein the diameter of the second body 152 is smaller than the diameter of the first connecting hole, the second body 152 passes through the first connecting hole and abuts against the first shock absorber 130.

[0078] It can be understood that the second shock absorber 150 is sleeved on the first fastener 140 through the second through hole, and is arranged in the first connecting hole through the second body 152, so that the first plate of the first connecting member 110 is clamped between the first shock absorber 130 and the first body 151 of the second shock absorber 150; such an arrangement can provide good buffering for the second connecting member 120 that sinks or jumps together with the liquid tank body 012, thereby avoiding damage or deformation of the first connecting member 110; even if the amplitude of the settlement or jump of the liquid tank body 012 exceeds the reserved gap 160, the second shock absorber 150 can also reduce the external impact on the first connecting member 110 and the second connecting member 120, thereby ensuring that the limiting device 100 as a whole will not be obviously deformed or broken.

[0079] Optionally, a second inclined surface 153 is provided on the bottom outer edge of the second body 152; such a configuration enables the second shock-absorbing member 150 to have good fatigue resistance and impact resistance, and can effectively extend the service life.

[0080] In this embodiment, the first body 151 and the second body 152 are integrally formed. Of course, in other embodiments, the first body 151 and the second body 152 may also be separate structures.

[0081] Optionally, a first gasket 142 is disposed between the top of the second body 152 of the second shock absorber 150 and the head of the first fastener 140 .

[0082] In this embodiment, the first shock absorbing member 130 and the second shock absorbing member 150 are both rubber shock absorbers made of rubber material. Of course, in other embodiments, they may also be structures such as springs.

[0083] The working principle of the limiting device 100 in this embodiment is:

[0084] The first connecting member 110 is arranged on the first compartment 011, and the second connecting member 120 is arranged on the tank compartment 012; when the tank compartment 012 sinks or bounces, the tank compartment 012 drives the second connecting member 120 to sink or bounce together, and by providing the first shock absorber 130 and the gap 160 between the first connecting member 110 and the head of the first fastener 140, the first connecting member 110 and the second connecting member 120 are buffered in the vertical direction, that is, the tank compartment 012 and the first compartment are buffered; at the same time, the external impact caused by the second connecting member 120 to the first connecting member 110 and the first fastener 140 is reduced, ensuring that the limiting device 100 as a whole will not be significantly deformed or broken. Even if the amplitude of the sinking or jumping of the tank compartment 012 exceeds the reserved gap 160, the second shock absorber 150 can also reduce the external impact on the first connecting member 110 and the second connecting member 120.

[0085] When the tank body 012 is swaying or tilting, two spaced limiting devices 100 are provided between the first body 011 and the tank body 012 to ensure the connection stability between the two, limit the tank body 012, and ensure that the tank body 012 will not be significantly displaced or tilted; thus, when the tank body 012 is tilted or displaced, the damage or deformation of the limiting device 100 body, the tank body 012, and the first body 011 caused by the pulling torque generated by the limiting device 100 is avoided. At the same time, the second connecting hole of the second connecting member 120 provides a certain movement tendency between the second connecting member 120 and the first fastener 140, thereby preventing accidental damage.

[0086] In summary, the limiting device 100 proposed in the utility model realizes buffering of the first connecting member 110 and the second connecting member 120 in the vertical direction, that is, buffering of the liquid tank body 012 and the first body, by setting the first shock absorber 130 and the gap 160 between the first connecting member 110 and the head of the first fastener 140; at the same time, it also reduces the external impact of the following second connecting member 120 on the first connecting member 110 and the first fastener 140, ensuring that the limiting device 100 as a whole will not be obviously deformed or broken.

[0087] The fire truck 010 proposed in the utility model has two spaced-apart limiting devices 100 between the first compartment 011 and the liquid tank compartment 012, so as to ensure the connection stability between the two when the liquid tank compartment 012 is swayed or skewed, thereby limiting the liquid tank compartment 012 and ensuring that the liquid tank compartment 012 will not be obviously displaced or skewed.

[0088] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A limiting device, characterized in that: include: A first connecting member, wherein a first end of the first connecting member is provided with a first connecting hole, and the first connecting member is used to connect to the first compartment; A second connecting member, a second end of which is provided with a second connecting hole, and the second connecting member is used to connect to the liquid tank body; A first shock absorbing member, wherein the first shock absorbing member is disposed between the first connecting hole and the second connecting hole; a first fastener, the first fastener sequentially passing through the first connecting hole, the first shock absorbing member, and the second connecting hole and connected to the second fastener; A gap is provided between the top surface of the first connecting member and the head of the first fastening member.

2. The limiting device according to claim 1, characterized in that: The limiting device also includes a second shock absorbing member, which is sleeved on the first fastening member and arranged on the top of the first connecting member.

3. The limiting device according to claim 2, characterized in that: A first gasket is arranged between the top of the second shock absorbing member and the head of the first fastening member.

4. The limiting device according to claim 2, characterized in that: The second shock absorbing member comprises a first body and a second body connected to each other; The diameter of the first body is larger than the diameter of the first connecting hole, and the diameter of the second body is smaller than the diameter of the first connecting hole; The top surface of the first body abuts against the head of the first fastener, and the second body passes through the first connecting hole and abuts against the first shock absorbing member.

5. The limiting device according to claim 4, characterized in that: A second inclined surface is disposed on the outer edge of the bottom of the second body.

6. The limiting device according to claim 1, characterized in that: A second inclined surface is disposed on the bottom outer edge of the first shock absorbing member.

7. The limiting device according to claim 1, characterized in that: The distance of the gap is 4 to 8 mm.

8. The limiting device according to claim 1, characterized in that: The first connecting member includes a first plate body, a second plate body and a third plate body connected to each other; The second plate body is arranged obliquely, and reinforcing ribs are arranged at the bottom of the first plate body and the second plate body.

9. The limiting device according to claim 1, characterized in that: The second connecting hole is a strip hole or a round hole.

10. A fire truck, characterized in that: It comprises a first compartment, a liquid tank compartment and the limiting device according to any one of claims 1 to 9, wherein at least two limiting devices arranged at intervals are arranged between the first compartment and the liquid tank compartment; The second end of the first connecting member is connected to the first compartment; The second end of the second connecting member is connected to the liquid tank body.

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