Shock Absorber and Refrigerated Truck

Abstract

The present invention provides a shock absorber and a refrigerated truck, relating to the technical field of shock absorption, and solving the technical problem in the prior art that in the installation of a traditional overhead refrigeration unit for a refrigerated truck, a rubber block shock absorption structure is adopted, and the rubber shock absorption block can usually meet the vertical shock absorption of the unit through compression deformation, but has a poor shock absorption effect in the horizontal direction. The shock absorber includes an intermediate shock absorption structure, a vertical shock absorption structure, and a horizontal shock absorption structure. Both the vertical shock absorption structure and the horizontal shock absorption structure are connected to the intermediate shock absorption structure. The vertical shock absorption structure and the horizontal shock absorption structure are both primary shock absorption structures, and the intermediate shock absorption structure is a secondary shock absorption structure. When one of the primary shock absorption structures deforms and absorbs shock until the intermediate shock absorption structure also deforms and absorbs shock, the intermediate shock absorption structure can drive the other primary shock absorption structure to deform and absorb shock. The present invention can achieve shock absorption in both the vertical and horizontal directions, and due to the setting of two-stage shock absorption, the shock absorption effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping, and more particularly to a shock absorber and a refrigerated truck provided with the shock absorber. Background Art

[0002] The operating environment conditions of the refrigerating machine of the refrigerated truck are harsh. The internal structure of the refrigerating machine is affected by vibration sources such as compressors and fans, and at the same time is impacted by inertial forces during vehicle driving. Especially during sharp turns, sudden brakes, and bumps caused by rough roads, the requirements for shock absorption of the unit are relatively high.

[0003] The applicant of the present invention has found that the prior art has at least the following technical problems:

[0004] The installation of the traditional top-mounted refrigerating machine of the refrigerated truck still uses a rubber block shock absorption structure. The rubber shock absorption block can usually meet the vertical shock absorption of the unit through compression deformation, but has a poor shock absorption effect in the horizontal direction. In addition, the rubber block has large wear and short service life. Summary of the Invention

[0005] The purpose of the present invention is to provide a shock absorber and a refrigerated truck, which solve the technical problem in the prior art that the installation of the traditional top-mounted refrigerating machine of the refrigerated truck uses a rubber block shock absorption structure, and the rubber shock absorption block can usually meet the vertical shock absorption of the unit through compression deformation, but has a poor shock absorption effect in the horizontal direction. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A shock absorber provided by the present invention includes an intermediate shock absorption structure, a vertical shock absorption structure, and a horizontal shock absorption structure. Among them, the vertical shock absorption structure and the horizontal shock absorption structure are both connected to the intermediate shock absorption structure. The vertical shock absorption structure and the horizontal shock absorption structure are both primary shock absorption structures, and the intermediate shock absorption structure is a secondary shock absorption structure. When one of the primary shock absorption structures deforms and absorbs shock until the intermediate shock absorption structure also deforms and absorbs shock, the intermediate shock absorption structure can drive the other primary shock absorption structure to deform and absorb shock.

[0008] Further, the horizontal shock absorption structure includes a first-direction shock absorption structure and a second-direction shock absorption structure. The first-direction shock absorption structure and the second-direction shock absorption structure are both connected to the intermediate shock absorption structure and are arranged along the circumferential direction of the intermediate shock absorption structure.

[0009] Further, the intermediate damping structure includes a first intermediate part and a second intermediate part. The second intermediate part is disposed outside the first intermediate part. The first intermediate part and the second intermediate part are connected by the vertical damping structure. The first intermediate part is connected to the first-direction damping structure, and the second intermediate part is connected to the second-direction damping structure.

[0010] Further, both the first-direction damping structure and the second-direction damping structure include two horizontal damping parts. Two ends of the first intermediate part are respectively connected to the two horizontal damping parts of the first-direction damping structure, and two ends of the second intermediate part are respectively connected to the two horizontal damping parts of the second-direction damping structure.

[0011] Further, the horizontal damping part includes a horizontal guide rod and a lateral elastic member. The lateral elastic member is sleeved on the horizontal guide rod. One end of the horizontal guide rod is connected to the first intermediate part or the second intermediate part. A horizontal limit nut is provided on the horizontal guide rod, and the horizontal limit nut is located on a side of the lateral elastic member away from the intermediate damping structure.

[0012] Further, the horizontal damping part further includes a horizontal adjusting nut. The horizontal adjusting nut is located on the horizontal guide rod, and the horizontal limit nut is located on a side of the lateral elastic member close to the intermediate damping structure.

[0013] Further, the first intermediate part includes two first leaf springs. Both of the two first leaf springs are arc-shaped plates. The two first leaf springs are disposed oppositely, and one of the first leaf springs is located above the other first leaf spring. Two ends of one first leaf spring are respectively connected to two ends of the other first leaf spring through a connection structure.

[0014] Further, the second intermediate part includes two second leaf springs. Both of the two second leaf springs are arc-shaped plates. The two second leaf springs are disposed oppositely, and one of the second leaf springs is located above the other second leaf spring. Two ends of one second leaf spring are respectively connected to two ends of the other second leaf spring through a connection structure. The two second leaf springs are located outside the first intermediate part.

[0015] Further, the connection structure includes a connecting rod and connecting tubes. The two connecting tubes are respectively located at one ends of the two arc-shaped plates arranged up and down. The two connecting tubes are spaced apart in the horizontal direction, and the connecting rod passes through the two connecting tubes. Limit nuts are respectively provided at two ends of the connecting rod, and a middle region of the connecting rod is connected to the first-direction damping structure or the second-direction damping structure.

[0016] Further, a connecting plate is provided on a side of the connecting pipe away from the arc-shaped plate, and the connecting plate on the connecting pipe and the arc-shaped plate are on the same arc surface.

[0017] Further, the vertical damping structure includes an upper damping part and a lower damping part. The upper damping part is arranged above the lower damping part. The lower damping part passes through the bottom of the second middle part and is connected to the first middle part, and the upper damping part passes through the top of the second middle part and is connected to the first middle part.

[0018] Further, the upper damping part and the lower damping part have the same structure.

[0019] Further, the upper damping part includes a vertical rod and a first vertical elastic member. One end of the vertical rod passing through the second middle part is connected to the first middle part. The outer section of the vertical rod located in the second middle part is sleeved with the first vertical elastic member, and a connecting nut is arranged at the free end of the vertical rod.

[0020] Further, the upper damping part further includes a vertical adjusting nut. The outer section of the vertical rod located in the second middle part is provided with the vertical adjusting nut, and the vertical adjusting nut is located on a side of the first vertical elastic member close to the second middle part.

[0021] Further, the upper damping part further includes a second vertical elastic member. The inner section of the vertical rod located in the second middle part is sleeved with the second vertical elastic member.

[0022] Further, the vertical rod is connected to the second middle part through the middle plate, and the middle plate is in fit with the second middle part.

[0023] A refrigerated truck includes a refrigerating machine, a mounting bottom plate, a shock-absorbing fixing frame, and the shock absorber. The vertical damping structure of the shock absorber connects the refrigerating machine and the mounting bottom plate. The shock-absorbing fixing frame is arranged on the mounting bottom plate, and the horizontal damping structure of the shock absorber is connected to the shock-absorbing fixing frame.

[0024] Further, there is more than one shock absorber. The shock-absorbing fixing frame includes a plurality of shock-absorbing fixing blocks, and the plurality of shock-absorbing fixing blocks are distributed along the circumferential direction of the corresponding shock absorber.

[0025] Further, a rubber shock-absorbing block is further arranged between the refrigerating machine and the mounting bottom plate.

[0026] The present invention can achieve the following technical effects: The present invention provides a shock absorber that can be applied to a refrigerated truck for damping of a refrigerating machine. The vertical damping structure can achieve damping of the refrigerating machine in the vertical direction, and the horizontal damping structure can achieve damping of the refrigerating machine in the horizontal direction. In addition, both the vertical damping structure and the horizontal damping structure are primary damping structures, and the intermediate damping structure is a secondary damping structure. When the shock absorber exerts its damping effect, first, mainly the primary damping structures play the main damping role, and then the secondary damping structure (i.e., the intermediate damping structure) plays the damping role. The shock absorber provided by the present invention can further improve the damping effect due to its ability to achieve two-stage damping. Secondly, the structure of the shock absorber provided by the present invention can achieve that when one of the primary damping structures deforms and damps until the intermediate damping structure also deforms, the intermediate damping structure can drive the other primary damping structure to deform and damp, thereby further improving the damping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of the shock absorber provided by an embodiment of the present invention;

[0029] Figure 2 is an exploded view of the shock absorber provided by an embodiment of the present invention;

[0030] Figure 3 is a front view schematic diagram of the shock absorber installed on a refrigerated truck provided by an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the connection between the shock absorber and the shock fixing block provided by an embodiment of the present invention.

[0032] In the figure: 1 - the first-direction shock-absorbing structure; 2 - the second-direction shock-absorbing structure; 12 - the horizontal shock-absorbing part; 121 - the horizontal guiding rod; 122 - the lateral elastic member; 123 - the horizontal limiting nut; 124 - the horizontal adjusting nut; 3 - the first intermediate part; 31 - the first leaf spring; 4 - the second intermediate part; 41 - the second leaf spring; 5 - the connecting structure; 51 - the connecting rod; 52 - the connecting pipe; 53 - the limiting nut; 54 - the connecting plate; 6 - the upper shock-absorbing part; 61 - the vertical rod; 62 - the first vertical elastic member; 63 - the connecting nut; 64 - the intermediate plate; 65 - the vertical adjusting nut; 66 - the second vertical elastic member; 7 - the lower shock-absorbing part; 8 - the cold machine mounting base plate; 9 - the shock-absorbing fixing block; 10 - the rubber shock-absorbing block; 11 - the refrigerating machine; 111 - the cold machine fixing chassis. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present invention.

[0034] The installation of traditional overhead refrigeration units for refrigerated trucks still uses a rubber block shock absorption structure. The rubber shock absorption blocks can usually meet the vertical shock absorption of the unit through compression deformation, but the shock absorption effect in the horizontal direction is poor. Based on this, the present invention provides a shock absorber that can be applied to refrigerated trucks for the shock absorption of refrigeration units. The specific structure is as follows: It includes an intermediate shock absorption structure, a vertical shock absorption structure, and a horizontal shock absorption structure. Among them, both the vertical shock absorption structure and the horizontal shock absorption structure are connected to the intermediate shock absorption structure. The vertical shock absorption structure and the horizontal shock absorption structure are both primary shock absorption structures, and the intermediate shock absorption structure is a secondary shock absorption structure. When one of the primary shock absorption structures deforms and absorbs shock until the intermediate shock absorption structure also deforms and absorbs shock, the intermediate shock absorption structure can drive the other primary shock absorption structure to deform and absorb shock. The vertical shock absorption structure can achieve the shock absorption of the refrigeration unit in the vertical direction, and the horizontal shock absorption structure can achieve the shock absorption of the refrigeration unit in the horizontal direction. In addition, both the vertical shock absorption structure and the horizontal shock absorption structure are primary shock absorption structures, and the intermediate shock absorption structure is a secondary shock absorption structure. When the shock absorber exerts its shock absorption effect, first, mainly the primary shock absorption structures play the main shock absorption role, and then the secondary shock absorption structure (i.e., the intermediate shock absorption structure) plays the shock absorption role. That is, for relatively small impact energy, the primary shock absorption structures can meet the energy absorption requirements. When the primary shock absorption structures cannot meet the requirements, the energy is transmitted to the intermediate shock absorption structure, and the intermediate shock absorption structure deforms and absorbs shock again to absorb the impact energy, realizing the secondary adjustment of the shock absorber. The shock absorber provided by the present invention can further improve the shock absorption effect because it can achieve two-stage shock absorption. Secondly, the structure of the shock absorber provided by the present invention can achieve that when one of the primary shock absorption structures deforms and absorbs shock until the intermediate shock absorption structure deforms and absorbs shock, the intermediate shock absorption structure can drive the other primary shock absorption structure to deform and absorb shock. In this way, the shock absorption effect can be further improved. For example, the vibration impact in the horizontal direction causes the horizontal shock absorption structure to deform and absorb shock. When the intermediate shock absorption structure also deforms and absorbs shock, it can be transmitted to the vertical shock absorption structure, thus quickly realizing the absorption of the vibration impact energy.

[0035] Regarding the horizontal shock absorption structure, the horizontal shock absorption structure includes a first-direction shock absorption structure 1 and a second-direction shock absorption structure 2. Both the first-direction shock absorption structure 1 and the second-direction shock absorption structure 2 are connected to the intermediate shock absorption structure and are arranged along the circumferential direction of the intermediate shock absorption structure. Preferably, the first-direction shock absorption structure 1 is an X-direction shock absorption structure, and the second-direction shock absorption structure 2 is a Y-direction shock absorption structure, realizing the X-direction shock absorption and Y-direction shock absorption of the shock absorber in terms of spatial position. At this time, the vertical shock absorption structure is the Z-direction shock absorption. The three-direction shock absorption provided by the present invention can solve the impact of inertial forces on the unit during sharp turns, sudden brakes, and in harsh road conditions of the vehicle.

[0036] Regarding the intermediate vibration damping structure, the intermediate vibration damping structure includes a first intermediate portion 3 and a second intermediate portion 4, the second intermediate portion 4 is arranged on the outside of the first intermediate portion 3, the first intermediate portion 3 and the second intermediate portion 4 are connected through a vertical vibration damping structure, the first intermediate portion 3 is connected to the first-direction vibration damping structure 1, and the second intermediate portion 4 is connected to the second-direction vibration damping structure 2. Specifically, when the first-direction vibration damping structure 1 undergoes deformation and vibration damping to a certain extent, the first intermediate portion 3 may undergo deformation and vibration damping, and after the first intermediate portion 3 undergoes deformation and vibration damping, the vertical vibration damping structure may undergo deformation and vibration damping. When the second-direction vibration damping structure 2 undergoes deformation and vibration damping to a certain extent, the second intermediate portion 4 may undergo deformation and vibration damping, and after the second intermediate portion 4 undergoes deformation and vibration damping, the vertical vibration damping structure may undergo deformation and vibration damping. When the vertical vibration damping structure undergoes deformation and vibration damping to a certain extent, the first intermediate portion 3 and the second intermediate portion 4 may undergo deformation and vibration damping, and then, the first-direction vibration damping structure 1 and the second-direction vibration damping structure 2 may undergo deformation and vibration damping.

[0037] Regarding the first-direction vibration damping structure 1 and the second-direction vibration damping structure 2, the first-direction vibration damping structure 1 and the second-direction vibration damping structure 2 each include two horizontal vibration damping parts 12, the two ends of the first middle part 3 are respectively connected to the two horizontal vibration damping parts 12 of the first-direction vibration damping structure 1, and the two ends of the second middle part 4 are respectively connected to the two horizontal vibration damping parts 12 of the second-direction vibration damping structure 2. Figure 1 , illustrating that the two horizontal vibration damping parts 12 of the first direction vibration damping structure 1 are respectively connected to the two ends of the first middle part 3, and the two horizontal vibration damping parts 12 of the second direction vibration damping structure 2 are respectively connected to the two ends of the second middle part 4.

[0038] The structure of the horizontal vibration reduction part 12 is preferably as follows. Figure 1 and Figure 2 The horizontal vibration-damping part 12 includes a horizontal guide rod 121 and a transverse elastic member 122. The transverse elastic member 122 is preferably a spring. The transverse elastic member 122 is sleeved on the horizontal guide rod 121. One end of the horizontal guide rod 121 is connected to the first middle part 3 or the second middle part 4. A horizontal limit nut 123 is provided on the horizontal guide rod 121. The horizontal limit nut 123 is located on the side of the transverse elastic member 122 away from the middle vibration-damping structure. In addition, as mentioned above, the horizontal vibration-damping structure undergoes deformation and vibration-damping. At this time, it refers to the deformation and vibration-damping of the transverse elastic member 122 on the horizontal vibration-damping part 12.

[0039] Preferably, the horizontal vibration damping part 12 further includes a horizontal adjustment nut 124 , which is located on the horizontal guide rod 121 , and the horizontal limit nut 123 is located on a side of the transverse elastic member 122 close to the middle vibration damping structure.

[0040] See also Figure 1 and Figure 2, the horizontal shock-absorbing part 12 on the left side of the second-direction shock-absorbing structure 2 is specifically explained as follows: The horizontal guiding rod 121 of the horizontal shock-absorbing part 12 is connected to the second intermediate part 4. One end of the horizontal guiding rod 121 can be arranged on the connecting rod 52, that is, the horizontal guiding rod 121 and the corresponding connecting rod 52 can be an integral structure, and the two form a "T" shape. The free end of the horizontal guiding rod 121 passes through the support frame (such as Figure 3 the shock-absorbing fixing block 9 in Figure 3 ). The horizontal adjusting nut 124 on the horizontal guiding rod 121 close to the connecting rod 52 side can adjust the pre-tightening state (that is, make the lateral elastic member 122 in a compressed state) of the lateral elastic member 122 on the horizontal guiding rod 121 by adjusting the position of the horizontal adjusting nut 124 on the horizontal guiding rod 121. For the horizontal limiting nut 123 on the horizontal guiding rod 121 far from the connecting rod 52 side, it is mainly used to connect the horizontal guiding rod 121 to the support frame (such as

[0041] See Figure 1 . For the two horizontal shock-absorbing parts 12 of the second-direction shock-absorbing structure 2, the impact energy brought by the vehicle during left and right sharp turns can be absorbed by the compression of the lateral elastic members 122 on the two horizontal shock-absorbing parts 12, thereby reducing the vibration of the unit. For the two horizontal shock-absorbing parts 12 of the first-direction shock-absorbing structure 1, the flushing energy brought by the vehicle during sudden braking and sudden acceleration in the front and back directions can be absorbed by the compression of the lateral elastic members 122 on the two horizontal shock-absorbing parts 12, thereby reducing the vibration of the unit.

[0042] See Figure 4 . S2 is the threaded length on the horizontal guiding rod 121, L1 is the length when the lateral elastic member 122 is pre-tightened (pre-compressed). The pre-compression amount of the lateral elastic member 122 can be adjusted according to the actual situation, and L1 does not exceed the length of the lateral elastic member 122 in the natural state at most. L2 is the length when the lateral elastic member 122 is compressed to the maximum, and it is required that (L1 - L2) > S2.

[0043] Regarding the structure of the first intermediate part 3, it is preferably as follows: The first intermediate part 3 includes two first leaf springs 31. Both of the two first leaf springs 31 are arc-shaped plates. The two first leaf springs 31 are arranged oppositely and one of the first leaf springs 31 is located above the other first leaf spring 31. The two ends of one first leaf spring 31 are respectively connected to the two ends of the other first leaf spring 31 through the connecting structure 5. See Figure 1 and Figure 2, which shows two first plate springs 31. The two first plate springs 31 are buckled to form an oval shape. When one end of the first middle part 3 is squeezed inward, the curvature of the two first plate springs 31 increases (i.e., changes in the direction of tending to be circular). When the top or the top of the first middle part 3 is squeezed inward, the curvature of the two first plate springs 31 decreases (i.e., changes in the direction of tending to be flat).

[0044] Preferably, the structure of the second middle part 4 is the same as that of the first middle part 3. The second middle part 4 includes two second plate springs 41. The two second plate springs 41 are both arc-shaped plates. The two second plate springs 41 are arranged oppositely, and one of the second plate springs 41 is located above the other second plate spring 41. The two ends of one second plate spring 41 are respectively connected to the two ends of the other second plate spring 41 through a connection structure 5. The two second plate springs 41 are located outside the first middle part 3. Refer to Figure 1 and Figure 2 , which shows two second plate springs 41. The two second plate springs 41 are buckled to form an oval shape. When one end of the second middle part 4 is squeezed inward, the curvature of the two second plate springs 41 increases (i.e., changes in the direction of tending to be circular). When the top or the top of the second middle part 4 is squeezed inward, the curvature of the two second plate springs 41 decreases (i.e., changes in the direction of tending to be flat).

[0045] Regarding the connection structure 5, the following is preferred: The connection structure 5 includes a connecting rod 51 and connecting pipes 52. The two connecting pipes 52 are respectively located at one end of the two arc-shaped plates arranged up and down. The two connecting pipes 52 are arranged at intervals in the horizontal direction, and the connecting rod 51 passes through the two connecting pipes 52. Limit nuts 53 are respectively arranged at both ends of the connecting rod 51. The middle area of the connecting rod 51 is connected to the first lateral damping structure 1 or the second lateral damping structure 2.

[0046] Refer to Figure 1 and Figure 2 , taking the connection structure 5 on the left side of the first middle part 3 as an example, the connection structure 5 is further explained: A connecting pipe 52 is arranged at the left end of the first plate spring 31 arranged above, and this connecting pipe 52 is close to the rear side of the first plate spring 31. A connecting pipe 52 is arranged at the left end of the first plate spring 31 arranged below, and this connecting pipe 52 is close to the front side of the first plate spring 31. Refer to Figure 1, the two first leaf springs 31 are arranged vertically and buckled. The connecting rod 51 passes through the connecting pipe 52 at the left end of the upper first leaf spring 31 and the connecting pipe 52 at the left end of the lower first leaf spring 31. Limit nuts 53 are arranged at both ends of the connecting rod 51, and the connection of the left ends of the two first leaf springs 31 can be realized. Similarly, the connection of the right ends of the two first leaf springs 31 and the connection between the two second leaf springs 41. In addition, as introduced above, the connecting rod 52 and the corresponding horizontal guide rod 121 can be of an integral structure, and the two form a "T" shape.

[0047] See Figure 1 and Figure 2 , a connecting plate 54 can be arranged on the side of the connecting pipe 52 away from the arc plate (the first leaf spring 31 or the second leaf spring 41). The connecting plate 54 on the connecting pipe 52 and the arc plate are on the same arc surface. Taking the first leaf spring 31 as an example, the specific description is as follows: See Figure 1 and Figure 2 , the left and right ends of the first leaf spring 31 are provided with connecting pipes 52, the connecting pipes 52 are provided with connecting plates 54, and the first leaf spring 31 and the connecting plates 54 on its left and right sides are on the same arc surface. Similarly, the second leaf spring 41 and the connecting plates 54 on its left and right sides are on the same arc surface.

[0048] Regarding the vertical vibration damping structure, see Figure 1 , the vertical vibration damping structure includes an upper vibration damping part 6 and a lower vibration damping part 7. The upper vibration damping part 6 is arranged above the lower vibration damping part 7. The lower vibration damping part 7 passes through the bottom of the second intermediate part 4 and is connected to the first intermediate part 3. The upper vibration damping part 6 passes through the top of the second intermediate part 4 and is connected to the first intermediate part 3. See Figure 3 , when the shock absorber is applied to a refrigerated truck, the upper vibration damping part 6 can be connected to the fixed chassis 2 of the refrigerating machine, and the lower vibration damping part 7 can be connected to the installation bottom plate 5 of the refrigerating machine. The upper vibration damping part 6 and the lower vibration damping part 7 absorb the impact energy brought by the vehicle when the vehicle bumps up and down, thereby reducing the vibration of the unit.

[0049] Preferably, the structures of the upper vibration damping part 6 and the lower vibration damping part 7 are the same. Of course, the structures of the two can also be different.

[0050] Regarding the upper vibration damping part 6, the specific structure is preferably as follows: See Figure 1 and Figure 2, the upper shock-absorbing part 6 includes a vertical rod 61 and a first vertical elastic member 62. The first vertical elastic member 62 is preferably a spring. One end of the vertical rod 61 passes through the second intermediate part 4 and is connected to the first intermediate part 3. A first vertical elastic member 62 is sleeved on the outer section of the vertical rod 61 located in the second intermediate part 4, and a connecting nut 63 is provided at the free end of the vertical rod 61. The specific use is as follows: When the shock absorber is applied to a refrigerated truck, the upper shock-absorbing part 6 can be connected to the fixed chassis 2 of the refrigerating machine, that is, the vertical rod 61 of the upper shock-absorbing part 6 is inserted into the hole on the fixed chassis 2 of the refrigerating machine and connected to the fixed chassis 2 of the refrigerating machine through the connecting nut 63. The structure of the upper shock-absorbing part 6 is the same as that of the lower shock-absorbing part 7. The lower shock-absorbing part 7 can be connected to the installation bottom plate 5 of the refrigerating machine, that is, the vertical rod of the lower shock-absorbing part 7 is inserted into the hole on the installation bottom plate 5 of the refrigerating machine and connected to the installation bottom plate 5 of the refrigerating machine through the connecting nut. Through the compression deformation of the spring member on the upper shock-absorbing part 6 and the spring member of the lower shock-absorbing part 7, the shock-absorbing effect is achieved.

[0051] Preferably, the upper shock-absorbing part 6 further includes a vertical adjusting nut 65. The vertical rod 61 is provided with a vertical adjusting nut 65 on the outer section located in the second intermediate part 4. The vertical adjusting nut 65 is located on one side of the first vertical elastic member 62 close to the second intermediate part 4. By rotating the vertical adjusting nut 65, the position of the vertical adjusting nut 65 on the vertical rod 61 can be adjusted.

[0052] Preferably, the upper shock-absorbing part 6 further includes a second vertical elastic member 66. A second vertical elastic member 66 is sleeved on the inner section of the vertical rod 61 located in the second intermediate part 4. The second vertical elastic member 66 is preferably a spring. See Figure 1 and Figure 2 , to improve the shock-absorbing effect, a second vertical elastic member 66 is provided in the section of the vertical rod 61 located between the first leaf spring 31 and the second leaf spring 41.

[0053] Regarding the connection between the vertical rod 61 and the first intermediate part 3, specifically as follows: The vertical rod 61 is connected to the first intermediate part 3 through an intermediate plate 64 and the intermediate plate 64 is in contact with the first intermediate part 3. The intermediate plate 64 is in contact with the first leaf spring 31. Preferably, the intermediate plate 64 is welded to the first leaf spring 31, and the vertical rod 61 is welded to the intermediate plate 64.

[0054] A refrigerated truck includes a refrigerating machine 11, an installation bottom plate 8 of the refrigerating machine, a shock-absorbing fixing frame, and a shock absorber. The vertical shock-absorbing structure of the shock absorber connects the refrigerating machine 11 and the installation bottom plate 8 of the refrigerating machine. The shock-absorbing fixing frame is arranged on the installation bottom plate 8, and the horizontal shock-absorbing structure of the shock absorber is connected to the shock-absorbing fixing frame. Regarding the structure and technical effects of the shock absorber, specific descriptions have been made above and will not be repeated here.

[0055] The number of shock absorbers is one or more, that is, according to the actual situation, a reasonable number of shock absorbers are arranged on the installation bottom plate 8 of the refrigerating machine and the fixed chassis of the refrigerating machine 11.

[0056] Regarding the shock-absorbing fixing bracket, the shock-absorbing fixing bracket includes a plurality of shock-absorbing fixing blocks 9, and the plurality of shock-absorbing fixing blocks 9 are distributed along the circumferential direction of the corresponding shock absorber. Since both the first-direction shock-absorbing structure 1 and the second-direction shock-absorbing structure 2 include two horizontal shock-absorbing portions 12, four shock-absorbing fixing blocks 9 can be provided, and each horizontal shock-absorbing portion 12 is respectively connected to the corresponding shock-absorbing fixing block 9.

[0057] Preferably, to improve the shock-absorbing effect, a rubber shock-absorbing block 10 is further provided between the refrigerator 11 and the mounting base plate 8.

[0058] As described above, only the specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A shock absorber, characterized in that, It includes an intermediate vibration reduction structure, a vertical vibration reduction structure and a horizontal vibration reduction structure, wherein: The vertical vibration reduction structure and the horizontal vibration reduction structure are both connected to the intermediate vibration reduction structure, the vertical vibration reduction structure and the horizontal vibration reduction structure are both primary vibration reduction structures, and the intermediate vibration reduction structure is a secondary vibration reduction structure, when one of the primary vibration reduction structures undergoes deformation and vibration reduction until the intermediate vibration reduction structure also undergoes deformation and vibration reduction, the intermediate vibration reduction structure can drive the other primary vibration reduction structure to undergo deformation and vibration reduction; The horizontal vibration damping structure comprises a first-direction vibration damping structure (1) and a second-direction vibration damping structure (2), wherein the first-direction vibration damping structure (1) and the second-direction vibration damping structure (2) are both connected to the intermediate vibration damping structure, and the first-direction vibration damping structure (1) and the second-direction vibration damping structure (2) are arranged along the circumferential direction of the intermediate vibration damping structure; The intermediate vibration damping structure comprises a first intermediate portion (3) and a second intermediate portion (4), the second intermediate portion (4) being arranged outside the first intermediate portion (3), the first intermediate portion (3) and the second intermediate portion (4) being connected via the vertical vibration damping structure, the first intermediate portion (3) being connected to the first-direction vibration damping structure (1), and the second intermediate portion (4) being connected to the second-direction vibration damping structure (2).

2. The shock absorber according to claim 1, characterized in that, The first-direction vibration damping structure (1) and the second-direction vibration damping structure (2) both comprise two horizontal vibration damping parts (12), the two ends of the first middle part (3) are respectively connected to the two horizontal vibration damping parts (12) of the first-direction vibration damping structure (1), and the two ends of the second middle part (4) are respectively connected to the two horizontal vibration damping parts (12) of the second-direction vibration damping structure (2).

3. The shock absorber according to claim 2, characterized in that The horizontal vibration damping part (12) comprises a horizontal guide rod (121) and a transverse elastic member (122), wherein the transverse elastic member (122) is sleeved on the horizontal guide rod (121), one end of the horizontal guide rod (121) is connected to the first middle part (3) or the second middle part (4), and a horizontal limiting nut (123) is provided on the horizontal guide rod (121), wherein the horizontal limiting nut (123) is located on a side of the transverse elastic member (122) away from the middle vibration damping structure.

4. The shock absorber according to claim 3, characterized in that, The horizontal vibration damping part (12) further comprises a horizontal adjustment nut (124), wherein the horizontal adjustment nut (124) is located on the horizontal guide rod (121), and the horizontal adjustment nut (124) is located on a side of the transverse elastic member (122) close to the intermediate vibration damping structure.

5. The shock absorber according to claim 1, characterized in that, The first intermediate portion (3) comprises two first leaf springs (31), both of which are arc-shaped plates, the two first leaf springs (31) are arranged opposite to each other and one of the first leaf springs (31) is located above the other first leaf spring (31), and the two ends of one of the first leaf springs (31) are respectively connected to the two ends of the other first leaf spring (31) via a connecting structure (5).

6. The shock absorber according to claim 1, characterized in that, The second intermediate part (4) includes two second leaf springs (41). Both of the two second leaf springs (41) are arc-shaped plates. The two second leaf springs (41) are arranged oppositely, and one of the second leaf springs (41) is located above the other second leaf spring (41). Two ends of one second leaf spring (41) are respectively connected to two ends of the other second leaf spring (41) through a connection structure (5). The two second leaf springs (41) are located outside the first intermediate part (3).

7. The shock absorber according to claim 5 or 6, characterized in that, The connection structure (5) includes a connecting rod (51) and connecting pipes (52). The two connecting pipes (52) are respectively located at one ends of the two arc-shaped plates arranged vertically. The two connecting pipes (52) are arranged at intervals in the horizontal direction, and the connecting rod (51) passes through the two connecting pipes (52). Limit nuts (53) are respectively arranged at two ends of the connecting rod (51). The middle region of the connecting rod (51) is connected to the first-direction shock absorption structure (1) or the second-direction shock absorption structure (2).

8. The shock absorber according to claim 7, characterized in that, A connecting plate (54) is arranged on a side of the connecting pipe (52) away from the arc-shaped plate. The connecting plate (54) on the connecting pipe (52) and the arc-shaped plate are on the same arc surface.

9. The shock absorber according to claim 1, characterized in that, The vertical shock absorption structure includes an upper shock absorption part (6) and a lower shock absorption part (7). The upper shock absorption part (6) is arranged above the lower shock absorption part (7). The lower shock absorption part (7) passes through the bottom of the second intermediate part (4) and is connected to the first intermediate part (3). The upper shock absorption part (6) passes through the top of the second intermediate part (4) and is connected to the first intermediate part (3).

10. The shock absorber according to claim 9, characterized in that, The structures of the upper shock absorption part (6) and the lower shock absorption part (7) are the same.

11. The shock absorber according to claim 9 or 10, characterized in that, The upper shock absorption part (6) includes a vertical rod (61) and a first vertical elastic member (62). One end of the vertical rod (61) passing through the second intermediate part (4) is connected to the first intermediate part (3). The first vertical elastic member (62) is sleeved on an outer side section of the vertical rod (61) located in the second intermediate part (4). A connection nut (63) is arranged at a free end of the vertical rod (61).

12. The shock absorber according to claim 11, characterized in that, The upper shock absorption part (6) further includes a vertical adjusting nut (65). The vertical adjusting nut (65) is arranged on an outer side section of the vertical rod (61) located in the second intermediate part (4). The vertical adjusting nut (65) is located on a side of the first vertical elastic member (62) close to the second intermediate part (4).

13. The shock absorber according to claim 11, characterized in that, The upper shock absorption part (6) further includes a second vertical elastic member (66). The second vertical elastic member (66) is sleeved on an inner side section of the vertical rod (61) located in the second intermediate part (4).

14. The shock absorber according to claim 11, characterized in that, The vertical rod (61) is connected to the first intermediate part (3) through an intermediate plate (64), and the intermediate plate (64) is in fit with the first intermediate part (3).

15. A refrigerated truck, characterized in that, It includes a refrigerator (11), a refrigerator installation bottom plate (8), a shock absorption fixing frame, and a shock absorber according to any one of claims 1-14. The vertical shock absorption structure of the shock absorber connects the refrigerator (11) and the refrigerator installation bottom plate (8). The shock absorption fixing frame is arranged on the refrigerator installation bottom plate (8), and the horizontal shock absorption structure of the shock absorber is connected to the shock absorption fixing frame.

16. The refrigerated truck according to claim 15, wherein, There is more than one shock absorber. The shock absorption fixing frame includes a plurality of shock absorption fixing blocks (9), and the plurality of shock absorption fixing blocks (9) are distributed along the circumferential direction of the corresponding shock absorber.

17. The refrigerated truck according to claim 15, wherein, A rubber shock absorption block (10) is further arranged between the refrigerator (11) and the refrigerator installation bottom plate (8).

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