Multifunctional temperature control food display vehicle

Abstract

The invention relates to the technical field of temperature control devices, in particular to a multifunctional temperature control food display vehicle. The temperature control exhibition stand is fixedly connected to the frame; the temperature control exhibition stand comprises an installation box fixedly connected to the vehicle frame; the platform is fixedly connected to the mounting box; the housing is arranged on the mounting box and is used for sealing and covering the platform; the regulation and control pipe is fixedly connected into the mounting box; the control columns are connected to the other two pipe heads of the regulation and control pipe in a sliding mode, and through openings are formed in the control columns. Each temperature control exhibition stand can be switched to supply cold / heat according to the requirements of dishes, so that each exhibition stand can be flexibly applied, each exhibition stand can be effectively used, and compared with dishes applicable equipment in the prior art, the equipment is applicable to dishes, the limitation of using the prior art is broken, and the application range of the equipment is widened. The use effect of the device is improved, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of temperature control devices, in particular to a multifunctional temperature-controlled food display vehicle. Background Art

[0002] In some large-scale outdoor activities, there is often a need to display food / dishes for consumption or viewing. Dishes can be roughly divided into two categories: cold dishes and hot dishes. In other words, dishes generally have two temperature requirements: cold and hot. Therefore, the display equipment currently used generally has both heating and refrigeration functions to meet the needs of different dishes.

[0003] Although the above-mentioned display equipment can meet the temperature requirements of dishes, it has some limitations in practical application. Specifically, the division of cold and hot areas inside the equipment is fixed, that is, the display space is pre-set and difficult to adjust flexibly. However, in actual display, the number and type of dishes required to be displayed each time are not fixed. Sometimes there are more cold dishes and fewer hot dishes, and sometimes the opposite. This fixed area division makes the equipment unable to fully meet the changing needs of the number of dishes when in use, thereby limiting the flexibility and applicability of the equipment. Summary of the invention

[0004] In view of the limitations of existing equipment, the present invention provides a multifunctional temperature-controlled food display vehicle capable of freely adjusting the temperature, so as to facilitate use.

[0005] The technical solution includes: a vehicle frame; a refrigeration device fixedly connected to the vehicle frame; a heating device fixedly connected to the vehicle frame; a temperature control booth fixedly connected to the vehicle frame; an inlet pipe fixedly connected to the vehicle frame, the inlet pipe connecting the temperature control booth with the refrigeration device, and the temperature control booth with the heating device respectively;

[0006] The temperature-controlled booth includes: an installation box fixedly connected to a vehicle frame; a platform fixedly connected to the installation box; a cover shell arranged on the installation box for sealing the platform; a control tube fixedly connected to the installation box, the control tube being arranged with three tube heads, the three tube heads being interconnected, one of the tube heads leading to the platform; a control column slidably connected to the other two tube heads of the control tube, the control column being provided with a through opening.

[0007] Its further technical solution is that the temperature-controlled booth also includes: an installation frame fixedly connected to the installation box; two plug-ins slidably connected to the installation frame, the control column and the plug-ins are transmission-coordinated, and the two plug-ins are connected as one piece; a plug-in hole is opened on the control column, and the plug-in block can be inserted into the plug-in hole; an elastic member A fixedly connected between the installation frame and the control column; an elastic member B fixedly connected between the installation frame and the plug-in block; an access pipe A fixedly connected to the installation box, and the access pipe A is connected to and communicates with the control pipe and the inlet pipe.

[0008] A further technical solution is that a cavity is provided in the middle of the platform, and the head of the regulating pipe is connected to the cavity; a circle of diffusion holes is provided on the platform, and the diffusion holes lead to the cavity.

[0009] Its further technical solution is that the cover shell is rotatably connected to the installation box, and the temperature-controlled booth also includes: a control shaft fixedly connected to the cover shell; a gear A fixedly connected to the control shaft; a guide frame fixedly connected to the installation box; a rack A slidably connected to the guide frame, the rack A meshing with the gear A; a pull rod fixedly connected to the rack A, and the end of the pull rod is arranged outside the installation box.

[0010] A further technical solution is that the temperature-controlled booth also includes: a connecting frame fixedly connected to the plug block; a contact head fixedly connected to the end of the connecting frame, the contact head being slidably connected to the pull rod; a triangular block fixedly connected to the pull rod, the triangular block being arranged within the moving range of the contact head.

[0011] Its further technical solution is that the temperature-controlled booth also includes: a recovery pipe fixedly connected in the cover shell; an access pipe B fixedly connected in the installation box, the access pipe B is fixedly connected to and connects the recovery pipe and the inlet pipe, and two access pipes B are provided; a switch plate rotatably connected in each access pipe B; a gear B rotatably connected outside the access pipe B, the gear B is coaxially fixed with the switch plate; a guide rod fixedly connected in the installation box; a rack B slidably connected to the guide rod, the rack B meshes with the gear B; an elastic member C fixedly connected between the rack B and the guide rod; and a pull rope fixedly connected between the rack B and the control column.

[0012] A further technical solution is that the temperature-controlled booth further comprises: a wiping block fixedly connected to the installation box.

[0013] A further technical solution is that the temperature-controlled booth further comprises: a sensor fixedly connected to the installation box, the sensor being arranged below the control column, and the sensor being connected to the refrigeration equipment and the heating equipment via electrical signals.

[0014] A further technical solution is that N×N temperature-controlled booths are arranged on the frame, and the positions of the temperature-controlled booths on each layer are arranged in a progressive manner from top to bottom.

[0015] Beneficial effects of the present invention:

[0016] The present invention sets each temperature-controlled booth to switch between cooling and heating according to the needs of dishes, so that the present invention can flexibly use each booth and make each booth on the present invention effectively used. Compared with the equipment applicable to dishes in the prior art, the present invention is equipment applicable to dishes, breaking the limitations of the use of prior art, improving the use effect of the present invention, and facilitating use.

[0017] The present invention arranges a cover to open and close by rotating, which facilitates the storage of the cover to prevent the cover from being confused or even lost; the present invention arranges a linkage mode between the opening and closing of the cover and the start of cooling / heating to reduce the loss of cold / heat flow, and arranges a mode for recovering cold and hot flow to reduce waste and save energy consumption; the present invention arranges a sensor to control and change the cooling power of the refrigeration equipment and the heating power of the heating equipment according to the need for heating / cooling of the temperature-controlled booth, so that the display vehicle can effectively consume energy while ensuring the cooling / heating effect of the dishes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the flow direction of the fluid entering the pipe in the present invention.

[0020] Figure 3 It is a schematic diagram of the connection structure of the temperature-controlled booth in the present invention.

[0021] Figure 4 It is a cross-sectional view of the position structure of the placement components and the control components in the present invention.

[0022] Figure 5 It is a connection structure diagram of the control components in the present invention.

[0023] Figure 6 It is a schematic diagram of the connection structure of the opening and closing components in the present invention.

[0024] Figure 7 It is a schematic diagram of the position structure of the cover shell after being transferred into the installation frame shell in the present invention.

[0025] Figure 8 It is a schematic diagram of the connection structure of the connection component in the present invention.

[0026] Fig. 9 It is a cross-sectional view of the connection structure between the connection assembly and the pull rod in the present invention.

[0027] Fig.10 This is a cross-sectional view of the position structure of the recovery component in the present invention.

[0028] Fig.11 It is a cross-sectional view of the connection structure of the recycling component in the present invention.

[0029] Fig.12 for Fig.11 A partial enlarged view of point A in the middle.

[0030] Fig.13 for Fig.11 A partial enlarged view of point B in the middle.

[0031] The marks in the attached drawings are: 1: frame; 101: air inlet window; 102: support leg; 2: refrigeration equipment; 3: heating equipment; 4: inlet pipe; 5: temperature control stand; 5101: installation box; 5102: platform; 5103: cavity; 5104: scattering hole; 5105: cover; 5106: abutment ring; 5201: control pipe; 5202: control column; 5203: opening; 5204: installation frame; 5205: plug block; 5206: plug hole; 5207: elastic member A; 5208: elastic member B; 5209: elastic member C; 5210: elastic member D; 5211: elastic member A; 5212: elastic member B; 5213: elastic member C; 5214: elastic member B; 5215: elastic member C; 5216: elastic member A; 5217: elastic member B; 5218: elastic member C; 5219: elastic member A; 5220: elastic member B; 5221: elastic member A; 5222: elastic member B; 5223: elastic member C; 5224: elastic member A; 5225: elastic member B; 5226: elastic member C; 5227: elastic member A; 5228: elastic member B; 5229: elastic member C; 5230: elastic member A; 5231: elastic member B; 5232: elastic member C; 5233: elastic member A; 5234: elastic member B; 5235: elastic member C; 5236: elastic member A; 5237: elastic member A; 5238: elastic member B; 5239: elastic member A; 5240: elastic member B; 52 9: Access tube A; 5301: Control shaft; 5302: Gear A; 5303: Guide frame; 5304: Rack A; 5305: Pull rod; 5401: Connecting frame; 5402: Contact head; 5403: Triangle block; 5501: Recovery tube; 5502: Access tube B; 5503: Switch plate; 5504: Gear B; 5505: Guide rod; 5506: Rack B; 5507: Elastic part C; 5508: Guide ring; 5509: Pull rope; 5510: Guide shaft; 56: Wiping block; 57: Sensor. DETAILED DESCRIPTION

[0032] 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.

[0033] Example: See Figure 1-Figure 2 , including: a frame 1; air inlet windows 101 fixedly installed on the left and right sides of the bottom of the frame 1; a support leg 102 fixedly installed on the bottom of the frame 1, the support leg 102 is provided with a retractable moving wheel, so that the frame 1 can switch between two states of stable placement and free movement; a refrigeration device 2 fixedly installed in the frame 1; a heating device 3 fixedly installed in the frame 1, the refrigeration device 2 is on the right, and the heating device 3 is on the left; a temperature-controlled booth 5 fixedly installed on the frame 1, the temperature-controlled booth 5 is used to place dishes, and a total of nine temperature-controlled booths 5 are arranged in a 3×3 pattern on the frame 1. The positions of the three-layer temperature-controlled booths 5 are progressively forward from top to bottom, so that the upper part of each temperature-controlled booth 5 is unobstructed; an inlet pipe 4 fixedly installed in the frame 1, the inlet pipe 4 connects the temperature-controlled booth 5 with the refrigeration device 2, and the temperature-controlled booth 5 with the heating device 3, so that each inlet pipe 4 independently passes hot / cold flow to the temperature-controlled booth 5.

[0034] See also Figure 3-Figure 4The temperature-controlled booth 5 includes: a placement component for placing dishes, the placement component includes: an installation box 5101 fixedly mounted on the frame 1; a platform 5102 fixedly mounted on the installation box 5101, the platform 5102 is used to place dishes; a cavity 5103 is provided in the middle of the platform 5102, and the cold / hot flow supplied by the confluence pipe 4 will be input into the cavity 5103; a circle of scattering holes 5104 is provided on the platform 5102, and the scattering holes 5104 lead to the cavity 5103 to evenly guide the cold / hot flow in the cavity 5103 The liquid flows onto the platform 5102, thereby achieving uniform cooling / heating of the dishes; the cover shell 5105 installed on the installation box 5101 is rotated, and when the cover shell 5105 is rotated to above the platform 5102, the platform 5102 will be closed, and the cover shell 5105 can also be rotated to be stored in the installation box 5101, so that the platform 5102 is completely open and convenient storage is achieved; a retaining ring 5106 is arranged on the front part of the platform 5102, and the retaining ring 5106 is used to limit the rotation position of the cover shell 5105, so that the cover shell 5105 can be stably sealed on the platform 5102.

[0035] See also Figure 3-Figure 5The temperature control booth 5 also includes: a control component arranged in the placement component, the control component is used to switch the cold / hot flow supplied to the cavity 5103, and the control component includes: a control tube 5201 fixedly installed on the front side of the installation box 5101, the control tube 5201 is set to a three-tube head type, the three tube heads are connected, one of which is fixed to the platform 5102 and connected to the cavity 5103; two control columns 5202 slidably installed on the control tube 5201, and the two control columns 5202 are respectively arranged on the control tube 5 On the other two pipe heads of 201, the control column 5202 is provided with a through hole 5203, and the control column 5202 can close the regulating tube 5201, while the through hole 5203 makes the regulating tube 5201 unobstructed, so the regulating tube 5201 can be controlled to be open or closed by operating the control column 5202 to move; the installation frame 5204 is fixedly installed in the installation box 5101, and the installation frame 5204 is located below the regulating tube 5201; two plug blocks 5205 are slidably installed on the installation frame 5204, and the two plug blocks 5205 are between The two plug blocks 5205 are fixed as a whole, and the two control columns 5202 are matched with each other. The plug blocks 5205 are provided with inclined surfaces, so that the plug blocks 5205 and the control columns 5202 can be transmitted through the inclined surfaces; the control columns 5202 are provided with plug holes 5206, and the plug blocks 5205 can be inserted into the plug holes 5206 to fix the positions of the control columns 5202; the elastic member A5207 fixedly installed between the mounting frame 5204 and the control columns 5202, and the elastic member A5207 is a compression spring used to reset the control columns 5 202; an elastic member B5208 fixedly mounted between the mounting frame 5204 and the plug block 5205, the elastic member B5208 being a compression spring for resetting the plug block 5205; two access pipes A5209 fixedly mounted in the mounting box 5101, the access pipes A5209 connecting and communicating with the two pipe heads of the regulating pipe 5201 and the inlet pipe 4 respectively connected to the refrigeration device 2 / heating device 3, so that the inlet pipe 4 respectively passes the hot / cold flow into the two pipe heads of the regulating pipe 5201 through the two access pipes A5209.

[0036] See also Figure 3 , Figure 6 and Figure 7The temperature-controlled booth 5 also includes: an opening and closing component arranged in the installation box 5101, the opening and closing component is connected to the cover shell 5105, and is used to conveniently control the opening and closing of the cover shell 5105, and the opening and closing component includes: a control shaft 5301 fixedly installed on the cover shell 5105, and the control shaft 5301 is located on the rotation axis of the cover shell 5105; a gear A5302 fixedly installed on the control shaft 5301; a guide frame 5303 fixedly installed in the installation box 5101; a rack A5304 slidably installed on the guide frame 5303, and the rack A5304 is engaged with the gear A5302, so that by moving the rack A5304 back and forth, the cover shell 5105 can be controlled to rotate forward and reverse; a pull rod 5305 fixedly installed on the rack A5304, and the pull rod 5305 is slidably installed with the installation box 5101, and the front end of the pull rod 5305 is located outside the installation box 5101.

[0037] See also Figure 3 , Figure 8 and Fig. 9 The temperature control booth 5 also includes: a connecting component arranged between the pull rod 5305 and the plug block 5205, the connecting component enables the pull rod 5305 to simultaneously control the movement of the plug block 5205, and the connecting component includes: a connecting frame 5401 fixedly installed on the plug block 5205; a contact head 5402 fixedly installed at the end of the connecting frame 5401, and the contact head 5402 is slidably installed on the pull rod 5305; a triangular block 5403 fixedly installed on the pull rod 5305, and the triangular block 5403 is arranged within the moving range of the contact head 5402, so that the pull rod 5305 moves forward and backward, and the plug block 5205 can be controlled to move to the right through the squeezing of the contact head 5402 by the triangular block 5403.

[0038] See also Figure 3 , Fig.10 , Fig.11 , Fig.12 and Fig.13The temperature control booth 5 also includes: a recovery component arranged in the installation box 5101, the recovery component is used to recover the cold / hot flow, and the recovery component includes: a recovery pipe 5501 fixedly installed in the cover 5105, the end of the recovery pipe 5501 is arranged on the inner surface of the cover 5105, the control shaft 5301 is hollow, and the control shaft 5301 is connected to the recovery pipe 5501; two access pipes B5502 fixedly installed in the installation box 5101, the access pipes B5502 Connect and communicate the control shaft 5301 and the inlet pipe 4 to return the recovered cold / hot flow to the refrigeration equipment 2 / heating equipment 3 respectively; rotate the switch plate 5503 installed in each access pipe B5502, and the rotation of the switch plate 5503 can control the opening and closing of the access pipe B5502; rotate the gear B5504 installed outside the access pipe B5502, and the gear B5504 is coaxially fixed with the switch plate 5503; fix the guide rod 5505 in the installation box 5101; The rack B5506 is slidably mounted on the guide rod 5505, and the rack B5506 is meshed with the gear B5504. Therefore, the reciprocating movement of the rack B5506 can control the positive and negative rotation of the switch plate 5503; the elastic member C5507 is fixedly mounted between the rack B5506 and the guide rod 5505, and the elastic member C5507 is a compression spring for resetting the rack B5506; the guide ring 5508 is fixedly mounted in the installation box 5101; the guide ring 5508 is slidably mounted on the guide ring 5508 A pull rope 5509 is provided in the middle, one end of the pull rope 5509 is fixed to the control column 5202, and the other end is fixed to the rack B5506, so that the movement of the control column 5202 can control the movement of the rack B5506; a guide shaft 5510 is fixedly installed in the installation box 5101, and the pull rope 5509 passes around the guide shaft 5510. The guide shaft 5510 is used to change the moving direction of the pull rope 5509 so that the control column 5202 can smoothly control the movement of the rack B5506 through the pull rope 5509.

[0039] See also Figure 3 , Figure 6 and Figure 7 The temperature control booth 5 also includes: a wiping block 56 fixedly installed at the lower part of the platform 5102. When the cover 5105 rotates into the installation box 5101, the wiping block 56 will be able to contact the inner surface of the cover 5105. The wiping block 56 is used to wipe and remove water droplets on the inner surface of the cover 5105; a sensor 57 fixedly installed in the installation box 5101. The sensor 57 is arranged below the control column 5202 and is used to sense the movement of the control column 5202. The sensor 57 is electrically connected to the refrigeration device 2 and the heating device 3 to transmit the sensing data, so that the refrigeration device 2 / heating device 3 can adjust the cooling / heating power according to the sensing data.

[0040] Using the demo car:

[0041] Start the refrigeration equipment 2 and the heating equipment 3, pull the pull rod 5305 forward, and transfer the transmission control cover 5105 through the gear A5302 and the gear B5504 into the installation box 5101, thereby opening the platform 5102. Subsequently, place the dishes on the platform 5102, and select refrigeration / heating according to product requirements. If it is refrigeration, press the control column 5202 on the right, otherwise press the control column 5202 on the left.

[0042] Assuming that the dish needs to be refrigerated, the right control column 5202 is pressed downwards. During the process: ① the opening 5203 of the right control column 5202 opens the right pipe head of the control pipe 5201, so that the refrigeration device 2 can pass the cold flow into the control pipe 5201 through the inlet pipe 4 and the right access pipe A5209. The cold flow will enter the cavity 5103 and then be evenly dispersed from the outlet hole 5104, so as to keep the dish cold; ② the right control column 5202 moves downwards to pull the pull rope 55 09 moves, the pull rope 5509 controls the rack B5506 to move downward, and the control gear B5504 and the switch plate 5503 rotate, so that the switch plate 5503 opens the access pipe B5502, and the cold flow recovered by the recovery pipe 5501 is returned to the refrigeration equipment 2 through the access pipe B5502 on the right. The separate reflux method is used to prevent the cross-flow of hot and cold. After the dishes are placed, push the pull rod 5305 back and re-seal the platform 5102 with the cover shell 5105.

[0043] During the use of the display cart, dishes may be taken at any time. In this case, the pull rod 5305 can be directly pulled to open the cover shell 5105. During this process, the pull rod 5305 moves forward, and the contact head 5402 is squeezed to the right by the triangular block 5403, so that both plug blocks 5205 move to the right, and the control column 5202 is reset upward by the elastic member A5207, so no matter what the usage situation is, it will be closed immediately. In this way, when the cover shell 5105 is opened, the temperature control booth 5 will no longer supply cooling / heating. In this way, the display cart can reduce the energy waste of the refrigeration equipment 2 and the heating equipment 3 by reducing the loss of cold / heat flow, thereby achieving the effect of energy saving.

[0044] When the cover 5105 is transferred into the installation box 5101, the wiping block 56 can wipe off the water droplets generated by the temperature difference in the cover 5105 to prevent the water droplets from affecting the dishes; the sensor 57 enables the display vehicle to count the number of cooling / heating conditions selected by the temperature-controlled booth 5, thereby automatically adjusting the operating power of the refrigeration equipment 2 / heating equipment 3. For example, if the number of cooling conditions selected is much greater than the number of heating conditions selected, the refrigeration equipment 2 can increase the cooling power according to the sensing data transmitted by the sensor 57, so that each temperature-controlled booth 5 can effectively keep cold, and the heating equipment 3 reduces the heating power, so that the display vehicle can effectively consume energy while ensuring the cooling / heating effect of the dishes.

[0045] Finally, when the display cart is no longer needed, pull the pull rod 5305 to take out the dishes. Under the transmission of the connecting assembly, the plug block 5205 is disengaged from the socket 5206, and the control column 5202 that is pressed downward can reset and close the control tube 5201. After completion, turn off the refrigeration equipment 2 and the heating equipment 3.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A multifunctional temperature-controlled food display vehicle, characterized in that: include: A vehicle frame (1); a refrigeration device (2) fixedly connected to the vehicle frame (1); A heating device (3) fixedly connected to the frame (1); a temperature control stand (5) fixedly connected to the frame (1), the temperature control stand (5) being used to place dishes; an inlet pipe (4) fixedly connected to the frame (1), the inlet pipe (4) respectively connecting the temperature control stand (5) and the refrigeration device (2), and the temperature control stand (5) and the heating device (3), so that each inlet pipe (4) independently passes a hot / cold flow to the temperature control stand (5); The temperature-controlled exhibition stand (5) comprises: an installation box (5101) fixedly connected to the vehicle frame (1); A platform (5102) fixedly connected to the installation box (5101) for placing dishes; a cover shell (5105) arranged on the installation box (5101) for covering the platform (5102); a control tube (5201) fixedly connected to the installation box (5101), the control tube (5201) being arranged in a three-tube head type, the three tube heads being interconnected, one of the tube heads leading to the platform (5102); a control column (5202) slidably connected to the other two tube heads of the control tube (5201), a through hole (5203) being provided on the control column (5202), and the movement of the control column (5202 controls whether the control tube (5201) is open or closed.

2. A multifunctional temperature-controlled food display vehicle according to claim 1, characterized in that: The temperature control booth (5) further comprises: an installation frame (5204) fixedly connected to the installation box (5101); two plug blocks (5205) slidably connected to the installation frame (5204); the control column (5202) and the plug blocks (5205) are in driving cooperation, and the two plug blocks (5205) are connected as one body; a plug hole (5206) is provided on the control column (5202), and the plug block (5205) can be inserted into the plug hole (5206) to fix the position of the control column (5202). ; an elastic member A (5207) fixedly connected between the mounting frame (5204) and the control column (5202); an elastic member B (5208) fixedly connected between the mounting frame (5204) and the plug (5205); an access pipe A (5209) fixedly connected in the mounting box (5101), the access pipe A (5209) being connected and communicating with the regulating pipe (5201) and the confluence pipe (4), so that the cold flow and the hot flow are respectively supplied thereto from the two pipe heads of the regulating pipe (5201).

3. The multifunctional temperature-controlled food display vehicle according to claim 2, characterized in that: A cavity (5103) is provided in the middle of the platform (5102), and the head of the regulating tube (5201) is connected to the cavity (5103); a circle of scattering holes (5104) for diversion is provided on the platform (5102), and the scattering holes (5104) lead to the cavity (5103).

4. The multifunctional temperature-controlled food display vehicle according to claim 3, characterized in that: The cover (5105) is rotatably connected to the installation box (5101), and the temperature-controlled booth (5) further comprises: a control shaft (5301) fixedly connected to the cover (5105); a gear A (5302) fixedly connected to the control shaft (5301); a guide frame (5303) fixedly connected to the installation box (5101); a rack A (5304) slidably connected to the guide frame (5303), the rack A (5304) meshing with the gear A (5302); and a pull rod (5305) fixedly connected to the rack A (5304), the end of the pull rod (5305) being arranged outside the installation box (5101).

5. The multifunctional temperature-controlled food display vehicle according to claim 4, characterized in that: The temperature-controlled booth (5) further comprises: a connecting frame (5401) fixedly connected to the plug block (5205); a contact head (5402) fixedly connected to the end of the connecting frame (5401), the contact head (5402) being slidably connected to the pull rod (5305); and a triangular block (5403) fixedly connected to the pull rod (5305), the triangular block (5403) being arranged within the moving range of the contact head (5402), so that the movement of the pull rod (5305) can control the movement of the contact head (5402).

6. The multifunctional temperature-controlled food display vehicle according to claim 5, characterized in that: The temperature-controlled booth (5) further comprises: a recovery pipe (5501) fixedly connected to the housing (5105); an access pipe B (5502) fixedly connected to the installation box (5101), the access pipe B (5502) fixedly connected to and communicating with the recovery pipe (5501) and the confluence pipe (4), two access pipes B (5502) being provided for circulating cold / hot flow respectively; a switch plate (5502) rotatably connected to each access pipe B (5502) for opening and closing the access pipe B (5502); 03); a gear B (5504) rotatably connected to the outside of the access pipe B (5502), the gear B (5504) being coaxially fixed with the switch plate (5503); a guide rod (5505) being fixedly connected to the installation box (5101); a rack B (5506) being slidably connected to the guide rod (5505), the rack B (5506) being meshed with the gear B (5504); an elastic member C (5507) being fixedly connected between the rack B (5506) and the guide rod (5505); A pull rope (5509) is fixedly connected between the rack B (5506) and the control column (5202) so that the control column (5202) moves to control the movement of the rack B (5506).

7. The multifunctional temperature-controlled food display vehicle according to claim 6, characterized in that: The temperature-controlled booth (5) further comprises: a wiping block (56) fixedly connected to the installation box (5101), wherein when the cover shell (5105) rotates, the position of the wiping block (56) enables it to contact the inner surface of the cover shell (5105).

8. The multifunctional temperature-controlled food display vehicle according to claim 7, characterized in that: The temperature control booth (5) further comprises: a sensor (57) fixedly connected to the installation box (5101); the sensor (57) is arranged below the control column (5202) and is used to sense the movement of the control column (5202); the sensor (57) is electrically connected to the refrigeration device (2) and the heating device (3) to transmit sensing data.

9. The multifunctional temperature-controlled food display vehicle according to claim 8, characterized in that: N×N temperature-controlled booths (5) are arranged on the vehicle frame (1), and the positions of the temperature-controlled booths (5) on each layer are progressively arranged from top to bottom, so that the upper part of each temperature-controlled booth (5) is not blocked.

Images