Preheating system for lower vehicle assembly and engineering equipment

Abstract

The invention provides a preheating system for a lower vehicle assembly and engineering equipment, the lower vehicle assembly comprises a walking mechanism, the walking mechanism comprises a plurality of supporting wheel shafts and supporting wheels correspondingly arranged on the supporting wheel shafts, and sealing rings are arranged at the two ends of each supporting wheel respectively; the preheating system comprises a preheating device used for providing a heat source, a central rotating piece connected with the preheating device and a preheating channel arranged on the supporting wheel shaft. The preheating channel is arranged in the axis direction of the thrust wheel shaft in a penetrating mode. One end of the preheating channel is hermetically connected with a liquid inlet branch pipe, and the other end is hermetically connected with a liquid outlet branch pipe; the plurality of liquid inlet branch pipes are arranged in parallel, and the plurality of liquid outlet branch pipes are arranged in parallel; the liquid inlet branch pipes connected in parallel are connected with a first liquid inlet connector of the central rotating piece through a first main liquid inlet pipe. The liquid outlet branch pipes connected in parallel are connected with a first liquid outlet connector of the central rotating piece through a first main liquid outlet pipe; the preheating system can be conveniently arranged on a lower vehicle assembly to preheat the lower vehicle assembly, and faults such as oil leakage and damage to sealing elements can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a preheating system and engineering equipment for an undercarriage assembly. Background Art

[0002] When engineering equipment (excavators) are working in extremely cold conditions, the power source needs to be preheated at low temperature before starting to ensure that the machine can be used normally. However, currently only low-temperature resistant seals are used for the chassis parts of the dismounted assembly for extremely cold conditions, and the chassis parts of the dismounted assembly are not sufficiently preheated; as a result, after the machine is started and working in extremely cold conditions, the sealing area of ​​the chassis parts is still in an extremely low temperature state, resulting in frequent oil leakage and deformation and damage of the seals. In extremely cold conditions, the chassis parts suffer from early wear, jump pins, large wheel system matching size gaps, and other abnormal wear of the four-wheel chassis parts, shortening the service life, and thus causing the dismounted assembly of the engineering equipment (excavator) to be unable to be transported normally.

[0003] Traditionally, in order to overcome the above defects, the entire dismounting assembly is improved to avoid oil leakage and seal deformation and damage caused by operating the equipment in an extremely cold environment; although the versatility of the dismounting assembly is reduced, and it is not applicable to existing engineering equipment that has been produced or sold to the market.

[0004] Therefore, there is an urgent need for a preheating system and engineering equipment for the get-off assembly, which can be conveniently arranged on the main frame of the standard walking mechanism to preheat the get-off assembly to reduce the probability of failures such as oil leakage and deformation and damage of seals. Summary of the invention

[0005] The purpose of the present invention is to provide a preheating system for an undercarriage assembly and engineering equipment, aiming to solve the technical problem that the undercarriage assembly of traditional engineering equipment is prone to malfunction when operating under extremely cold conditions.

[0006] To achieve the above-mentioned object, in a first aspect, the present invention provides a preheating system for an undercarriage assembly, wherein the undercarriage assembly includes a traveling mechanism, wherein the traveling mechanism includes a plurality of roller shafts and rollers correspondingly arranged on the roller shafts, and sealing rings are respectively arranged at both ends of the rollers;

[0007] The preheating system includes a preheating device for providing a heat source, a central rotating member connected to the preheating device, and a preheating channel arranged on the supporting wheel shaft;

[0008] The preheating channel is arranged through along the axial direction of the supporting wheel shaft; one end of the preheating channel is sealed connected to a liquid inlet branch pipe, and the other end is sealed connected to a liquid outlet branch pipe; a plurality of the liquid inlet branches are arranged in parallel, and a plurality of the liquid outlet branches are arranged in parallel;

[0009] A plurality of the liquid inlet branch pipes are connected to the first liquid inlet interface of the central rotating member through the first main liquid inlet pipe; a plurality of the liquid outlet branch pipes are connected to the first liquid outlet interface of the central rotating member through the first main liquid outlet pipe.

[0010] As a further improvement of the above solution, the central rotating member is used to be arranged at the rotation center of the lower vehicle assembly.

[0011] As a further improvement of the above solution, the central rotating member includes a rotating member body, and a liquid inlet channel and a liquid outlet channel are provided in the rotating member body;

[0012] The first liquid inlet interface is provided at one end of the liquid inlet channel, and the second liquid inlet interface is provided at the other end, and the second liquid inlet interface is connected to the liquid outlet of the preheating device;

[0013] The first liquid outlet interface is disposed at one end of the liquid outlet channel, and the second liquid outlet interface is disposed at the other end thereof, and the second liquid outlet interface is connected to the liquid inlet of the preheating device.

[0014] As a further improvement of the above scheme, the preheating device includes a preheating box for accommodating the preheating medium, a preheating pump for pumping the preheating medium, and a heating device arranged in the preheating box, and the liquid outlet of the preheating pump is connected to the liquid inlet channel of the rotating part body; the preheating box is also provided with a liquid inlet, and the liquid inlet is connected to the liquid outlet channel of the rotating part body.

[0015] As a further improvement of the above scheme, the preheating device includes an exhaust gas recovery device arranged at the rear end of the engine post-processing device, and a heat energy storage device connected to the exhaust gas recovery device.

[0016] The exhaust gas recovery device comprises a mesh-type heating liquid tank, a heat preservation layer wrapped around the outside of the mesh-type heating liquid tank, and an exhaust hood arranged at the end of the mesh-type heating liquid tank away from the engine exhaust gas connection end; the end of the mesh-type heating liquid tank away from the exhaust hood is used to connect with the rear end of the engine post-processing device to heat the liquid in the mesh-type heating liquid tank by the exhaust gas heat, and the mesh-type heating liquid tank is provided with a heating tank liquid inlet and a heating tank liquid outlet;

[0017] The thermal energy storage device includes a liquid storage tank and an energy storage water pump assembly for providing pumping power for the energy storage liquid in the liquid storage tank. The liquid storage tank is provided with a liquid storage tank inlet and a liquid storage tank outlet. The liquid storage tank inlet is connected to the liquid outlet of the heating box through a first liquid pipe, and the liquid storage tank outlet is connected to the liquid inlet of the heating box through a second liquid pipe.

[0018] As a further improvement of the above solution, the exhaust gas recovery device is connected to the rear end of the engine after-treatment device through an exhaust port connecting device.

[0019] As a further improvement of the above scheme, the exhaust port connecting device includes a flange pipe and an exhaust gas heat collection cavity, one end of the flange pipe is connected to the exhaust gas heat collection cavity, and the other end is connected to the rear end of the engine after-treatment device, the exhaust gas heat collection cavity has an opening, and the opening is connected to the air inlet end of the mesh type heating liquid tank through a clamp.

[0020] As a further improvement of the above solution, a temperature sensor is provided in the mesh type heating liquid tank for monitoring the temperature of the liquid in the mesh type heating liquid tank.

[0021] As a further improvement of the above scheme, the preheating device includes an exhaust gas recovery device arranged at the rear end of the engine post-processing device, and a heat energy storage device connected to the exhaust gas recovery device.

[0022] The exhaust gas recovery device includes a three-way valve and a steering control motor drivingly connected to the three-way valve, wherein the first interface of the three-way valve is used to connect to the rear end of the engine post-processing device, the second interface of the three-way valve is used to discharge the exhaust gas, and the third interface of the three-way valve is connected to a mesh-type heating liquid tank, and the mesh-type heating liquid tank is provided with a heating tank liquid inlet and a heating tank liquid outlet;

[0023] The steering control motor is used to control the valve core of the three-way valve to operably connect the first interface with the second interface, or connect the first interface with the third interface;

[0024] The thermal energy storage device includes a liquid storage tank and an energy storage water pump assembly for providing pumping power for the energy storage liquid in the liquid storage tank. The liquid storage tank is provided with a liquid storage tank inlet and a liquid storage tank outlet. The liquid storage tank inlet is connected to the liquid outlet of the heating box through a first liquid pipe, and the liquid storage tank outlet is connected to the liquid inlet of the heating box through a second liquid pipe.

[0025] As a further improvement of the above scheme, a temperature sensor is provided in the mesh type heating liquid tank, and the temperature sensor is communicatively connected with the steering control motor for monitoring the liquid temperature in the mesh type heating liquid tank so as to control the opening of the channel corresponding to the valve core of the three-way valve.

[0026] In a second aspect, the present invention further provides an engineering equipment, comprising the preheating system provided in the first aspect.

[0027] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0028] 1. The present invention provides a preheating system for an undercarriage assembly, wherein the undercarriage assembly comprises a traveling mechanism, wherein the traveling mechanism comprises a plurality of roller shafts and rollers correspondingly arranged on the roller shafts, and sealing rings are respectively arranged at both ends of the rollers; the preheating system comprises a preheating device for providing a heat source, a central rotating member connected to the preheating device, and a preheating channel arranged on the roller shaft; the preheating channel is arranged to penetrate along the axial direction of the roller shaft; one end of the preheating channel is sealedly connected to a liquid inlet branch pipe, and the other end is sealed A liquid outlet branch pipe is connected; several of the liquid inlet branch pipes are arranged in parallel, and several of the liquid outlet branch pipes are arranged in parallel; several of the liquid inlet branch pipes are connected to the first liquid inlet interface of the central rotating member through the first main liquid inlet pipe; several of the liquid outlet branch pipes are connected to the first liquid outlet interface of the central rotating member through the first main liquid outlet pipe; in the present invention, a preheating channel is arranged on the supporting wheel shaft, and the preheating channel is arranged through along its axial direction, so that the heat source medium generated by the preheating device can enter the corresponding preheating channel through the corresponding liquid inlet branch pipe in turn. In the embodiment of the present invention, the roller shaft is heated, and the roller shaft transfers heat to the corresponding roller and the sealing rings arranged at both ends thereof. Since the sealing rings are mostly made of rubber material, the rubber material will harden in a low-temperature and extremely cold environment, reducing its flexibility. Although the sealing rings made of low-temperature material improve its flexibility at low temperatures, they are far less than the flexibility at suitable temperatures. Under the action of the heat source medium, the ambient temperature of the sealing rings arranged at both ends of the roller is increased, so that the flexibility is also restored. Therefore, it is not easy to be damaged at the time of startup. Since it has good flexibility, it can play a good sealing role, thereby avoiding oil leakage and deformation and damage of the sealing ring. In addition, the structure adopted by the present invention is simple, and only the preheating channel needs to be opened on the original roller shaft, and there is no need to make changes to important components such as the main frame of the original dismounting assembly, which will not reduce the versatility of the dismounting assembly. Furthermore, in the present invention, the preheating channel is cleverly set along the axial direction of the roller shaft. Since the roller shaft is relatively fixed, the connection of the entire preheating pipeline is simple, and there is no need to set parts such as rotating joints at both ends of the preheating channel.

[0029] 2. The present invention provides a preheating system for an off-vehicle assembly, wherein the preheating device comprises an exhaust gas recovery device disposed at the rear end of an engine aftertreatment device, and a heat energy storage device connected to the exhaust gas recovery device, wherein the exhaust gas recovery device comprises a mesh-type heating liquid tank, a heat preservation layer wrapped around the outside of the mesh-type heating liquid tank, and an exhaust hood disposed at an end of the mesh-type heating liquid tank away from the engine exhaust gas connection end; the end of the mesh-type heating liquid tank away from the exhaust hood is used to be connected to the rear end of the engine aftertreatment device so as to heat the liquid in the mesh-type heating liquid tank by the exhaust gas heat, and the The mesh-type heating liquid tank is provided with a heating box liquid inlet and a heating box liquid outlet; the heat energy storage device includes a liquid storage tank and an energy storage water pump assembly for providing pumping power for the energy storage liquid in the liquid storage tank. With such a configuration, the heat of the engine exhaust gas is collected through the exhaust gas recovery device and stored in the heat energy storage device. When in use, it is only necessary to connect the heat energy storage device with the liquid inlet channel and the liquid outlet channel of the central rotating part, so that the heat of the engine exhaust gas can be used as the heat source of the preheating system. While realizing effective preheating of the getting-off assembly, it can also achieve the purpose of energy saving and environmental protection.

[0030] 3. The present invention provides a preheating system for a vehicle disembarking assembly, wherein the preheating device comprises an exhaust gas recovery device disposed at the rear end of an engine aftertreatment device, and a heat energy storage device connected to the exhaust gas recovery device, wherein the exhaust gas recovery device comprises a three-way valve and a steering control motor drivingly connected to the three-way valve, wherein a first interface of the three-way valve is used to connect to the rear end of the engine aftertreatment device, and a second interface of the three-way valve is used to discharge exhaust gas, and a third interface of the three-way valve is connected to a mesh-type heating liquid tank, wherein a heating tank inlet and a heating tank outlet are provided on the mesh-type heating liquid tank; the steering control motor is used to control the valve core of the three-way valve so as to operably connect the first interface with the second interface, or connect the first interface with the third interface; the heat energy storage device comprises a liquid storage tank and an energy storage water pump assembly for providing pumping power for energy storage liquid in the liquid storage tank; with such a configuration, the present invention arranges a three-way valve at the rear end of the engine aftertreatment device, and controls the connecting channel of the three-way valve through the steering control motor, such as With this setting, it is possible to choose to directly discharge the heat of the engine exhaust gas or to recycle the heat of the engine exhaust gas according to the environment in which the engineering equipment is located. Specifically, under a conventional operating environment, the steering control motor controls the valve core of the three-way valve to move so that the first interface is connected to the second interface, and the exhaust heat is directly discharged; under an extremely cold operating environment, the steering control motor controls the valve core of the three-way valve to move so that the first interface is connected to the third interface, and the heat of the engine exhaust gas is used as a heat source for the preheating system, which can not only achieve the effect of energy saving and environmental protection, but also preheat the relevant components on the engineering equipment. At the same time, the use of such a preheating device can also improve the versatility of the equipment, so that the performance of the engineering equipment will not be reduced due to the influence of the working environment; the user only needs to control the connecting channel of the three-way valve according to the ambient temperature; and in some preferred embodiments, an ambient temperature sensor can also be set on the equipment, and the ambient temperature sensor is communicatively connected to the three-way valve, so that the connecting channel of the three-way valve can be automatically controlled according to the ambient temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 It is a three-dimensional schematic diagram of a preheating system for an alighting assembly disclosed in the present invention installed on the alighting assembly;

[0033] Figure 2It is a three-dimensional schematic diagram of a preheating system for an alighting assembly disclosed in the present invention, in which the preheating system is not installed on the alighting assembly;

[0034] Figure 3 It is a partial cross-sectional schematic diagram of a preheating system for an exit assembly disclosed in the present invention;

[0035] Figure 4 A three-dimensional schematic diagram of a preheating device provided in Example 2 disclosed in the present invention;

[0036] Figure 5 for Figure 4 A three-dimensional schematic diagram of an exhaust gas recovery device;

[0037] Figure 6 A three-dimensional schematic diagram of a preheating system provided in Example 3 disclosed in the present invention;

[0038] Figure 7 It is a partial internal cross-sectional schematic diagram of the central rotating member disclosed in the present invention;

[0039] Figure 8 It is a front schematic diagram of the tail gas recovery device disclosed in the present invention.

[0040] Reference numerals:

[0041] 0. Lowering assembly; 01. Traveling mechanism; 02. Track roller shaft; 03. Track roller; 04. Sealing ring;

[0042] 1. Preheating device; 11a. Tail gas recovery device; 111a. Mesh type heating liquid tank; 112a. Insulation layer; 113a. Exhaust hood; 114a. Heating box liquid inlet; 115a. Heating box liquid outlet;

[0043] 12a, heat energy storage device; 121a, liquid storage tank; 122a, energy storage water pump assembly; 123a, liquid inlet of liquid storage tank; 124a, liquid outlet of liquid storage tank; 13a, first liquid pipe; 14a, second liquid pipe; 15a, discharge port connection device; 151a, flange pipe; 152a, exhaust gas heat collection cavity;

[0044] 11b, exhaust gas recovery device; 111b, three-way valve; 112b, first interface; 113b, second interface; 114b, third interface; 115b, steering control motor; 116b, mesh type heating liquid tank; 117b, heating tank liquid inlet; 118b, heating tank liquid outlet;

[0045] 12b, heat energy storage device; 121b, liquid storage tank; 122b, energy storage water pump assembly; 123b, liquid inlet of liquid storage tank; 124b, liquid outlet of liquid storage tank; 13b, first liquid pipe; 14b, second liquid pipe; 15b, exhaust pipe; 16b, air inlet pipe; 17b, exhaust hood;

[0046] 2. Central rotating member; 21. First liquid inlet interface; 22. First liquid outlet interface; 23. Rotating member body; 24. Liquid inlet channel; 25. Liquid outlet channel; 26. Second liquid inlet interface; 27. Second liquid outlet interface; 3. Preheating channel; 4. Liquid inlet branch pipe; 5. Liquid outlet branch pipe; 6. First main liquid inlet pipe; 7. First main liquid outlet pipe; 8. Engine after-treatment device.

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] 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.

[0049] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0051] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] Example 1

[0053] See also Figure 1-3 The present invention provides a preheating system for a dismounting assembly 0, wherein the dismounting assembly 0 comprises a traveling mechanism 01, wherein the traveling mechanism 01 comprises a plurality of roller shafts 02 and rollers 03 correspondingly arranged on the roller shafts 02, and sealing rings 04 are respectively arranged at both ends of the roller 03;

[0054] The preheating system comprises a preheating device 1 for providing a heat source, a central rotating member 2 connected to the preheating device 1, and a preheating channel 3 arranged on the supporting wheel shaft 02;

[0055] The preheating channel 3 is arranged to penetrate along the axial direction of the supporting wheel shaft 02; one end of the preheating channel 3 is sealedly connected to a liquid inlet branch pipe 4, and the other end is sealedly connected to a liquid outlet branch pipe 5; a plurality of the liquid inlet branch pipes 4 are arranged in parallel, and a plurality of the liquid outlet branch pipes 5 are arranged in parallel;

[0056] The plurality of liquid inlet branches 4 are connected to the first liquid inlet interface 21 of the central rotating member 2 through the first main liquid inlet pipe 6; the plurality of liquid outlet branches 5 are connected to the first liquid outlet interface 22 of the central rotating member 2 through the first main liquid outlet pipe 7; specifically, the central rotating member 2 is used to be arranged at the rotation center of the lower vehicle assembly 0; see Figure 7 The central rotating member 2 includes a rotating member body 23, in which a liquid inlet channel 24 and a liquid outlet channel 25 are provided; one end of the liquid inlet channel is provided with the first liquid inlet interface 21, and the other end is provided with a second liquid inlet interface 26, and the second liquid inlet interface 26 is connected to the liquid outlet of the preheating device 1; one end of the liquid outlet channel is provided with the first liquid outlet interface 22, and the other end is provided with a second liquid outlet interface 27, and the second liquid outlet interface 27 is connected to the liquid inlet of the preheating device 1;

[0057] In the present invention, a preheating channel 3 is provided on the supporting wheel shaft 02, and the preheating channel 3 is provided through along its axial direction, so that the heat source medium generated by the preheating device 1 can enter the corresponding preheating channel 3 through the corresponding liquid inlet branch pipe 4 in sequence to heat the supporting wheel shaft 02, and the supporting wheel shaft 02 transfers the heat to the corresponding supporting wheel 03 and the sealing ring 04 provided at both ends thereof. Since the sealing ring 04 is mostly made of rubber material, the rubber material will harden in a low-temperature and extremely cold environment, thereby reducing its flexibility; although the sealing ring 04 made of low-temperature material has improved its flexibility at low temperatures, it is far less than its flexibility at a suitable temperature; under the action of the heat source medium, the environment of the sealing ring 04 provided at both ends of the supporting wheel 03 The temperature is increased and the flexibility is restored, so it is not easy to be damaged when the dismounting assembly 0 is moving. Due to its good flexibility, it can play a good sealing role, thereby avoiding oil leakage and deformation and damage of the sealing ring 04; in addition, the structure adopted by the present invention is simple, and it is only necessary to open a preheating channel 3 on the original supporting wheel shaft 02, without making changes to important components such as the main frame of the original dismounting assembly 0, and will not reduce the versatility of the dismounting assembly 0; furthermore, in the present invention, the preheating channel 3 is cleverly set along the axial direction of the supporting wheel shaft 02. Since the supporting wheel shaft 02 is relatively fixed, the connection of the entire preheating pipeline is simple, and there is no need to set parts such as rotating joints at both ends of the preheating channel 3.

[0058] As a preferred embodiment, the preheating device 1 (not shown in the drawings) includes a preheating box for accommodating a preheating medium, a preheating pump for pumping the preheating medium, and a heating device arranged in the preheating box, wherein the liquid outlet of the preheating pump is connected to the liquid inlet channel 24 of the rotating body 23; the preheating box is also provided with a liquid inlet, which is connected to the liquid outlet channel 25 of the rotating body 23; for the setting of such a preheating device 1, it is only necessary to reasonably install the preheating device 1 on the lower assembly 0, but such a preheating device 1 requires additional heating. The device heats the preheating medium. Before the getting-off assembly 0 starts to move, the heating device can be started to heat the preheating medium. The preheating medium flows into the preheating channel 3 to heat each supporting wheel shaft 02 of the getting-off assembly 0, thereby increasing the temperature of the corresponding sealing ring 04 contact parts, thereby restoring the flexibility of the sealing ring 04; after the preheating time is reached, the getting-off assembly 0 can be started to perform the moving task; although the energy consumption of the preheating device 1 in this way is increased, it can effectively meet the preheating requirements of the getting-off assembly 0 and reduce the failure rate of the equipment.

[0059] Example 2

[0060] See also Figure 4 and Figure 5On the basis of effectively preheating the vehicle dismounting assembly 0, in order to reduce the energy consumption of engineering equipment, the present invention provides a preheating system for the vehicle dismounting assembly 0, and further improves the preheating device 1 (except the preheating device 1, other structures are the same as those in the embodiment 1, and will not be repeated here); specifically, the preheating device 1 includes an exhaust gas recovery device 11a arranged at the rear end of the engine post-processing device 8, and a heat energy storage device 12a connected to the exhaust gas recovery device 11a,

[0061] The exhaust gas recovery device 11a includes a mesh type heating liquid tank 111a, a heat preservation layer 112a wrapped around the outside of the mesh type heating liquid tank 111a, and an exhaust hood 113a arranged at the end of the mesh type heating liquid tank 111a away from the engine exhaust gas connection end; the end of the mesh type heating liquid tank 111a away from the exhaust hood 113a is used to connect with the rear end of the engine post-processing device 8 to heat the liquid in the mesh type heating liquid tank 111a by the exhaust gas heat, and the mesh type heating liquid tank 111a is provided with a heating tank liquid inlet 114a and a heating tank liquid outlet 115a;

[0062] The thermal energy storage device 12a includes a liquid storage tank 121a and an energy storage water pump assembly 122a for providing pumping power for the energy storage liquid in the liquid storage tank 121a. The liquid storage tank 121a is provided with a liquid storage tank inlet 123a and a liquid storage tank outlet 124a. The liquid storage tank inlet 123a is connected to the heating tank outlet 115a through a first liquid pipe 13a, and the liquid storage tank outlet 124a is connected to the heating tank inlet 114a through a second liquid pipe 14a.

[0063] With such a configuration, the heat of the engine exhaust gas is collected through the exhaust gas recovery device 11a and stored in the heat energy storage device 12a. When in use, it is only necessary to connect the heat energy storage device 12a with the liquid inlet channel and the liquid outlet channel of the central rotating member 2, so that the heat generated by the engine exhaust gas can be used as the heat source of the preheating system, which can achieve the purpose of energy saving and environmental protection while effectively preheating the lower assembly 0;

[0064] In addition, the preheating device 1 provided in this embodiment does not need to change the overall structure of the original engineering equipment, nor does it need to add a mounting bracket. It only needs to connect the mesh-type heating liquid tank 111a at the rear end of the engine after-treatment device 8, and fix the liquid storage tank 121a on the frame of the original engineering equipment. The installation method is simple and highly versatile, and can be applied to engineering equipment of different types and specifications.

[0065] As a preferred embodiment, the exhaust gas recovery device 11a is connected to the rear end of the engine after-treatment device 8 through an exhaust port connection device 15a; specifically, the exhaust port connection device 15a includes a flange pipe 151a and an exhaust gas heat collection cavity 152a, one end of the flange pipe 151a is connected to the exhaust gas heat collection cavity 152a, and the other end is connected to the rear end of the engine after-treatment device 8, and the exhaust gas heat collection cavity 152a has an opening, and the opening is connected to the air inlet end of the mesh type heating liquid tank 111a through a clamp;

[0066] In this embodiment, the flange pipe 151a includes a pipe body and a connecting flange arranged at one end of the pipe body, the other end of the pipe body is connected to the exhaust gas heat collection cavity 152a, and the connecting flange is used to connect to the rear end of the engine after-treatment device 8 to collect exhaust gas; the exhaust gas heat collection cavity 152a is a sphere with a hollow inner cavity; in some preferred embodiments, the discharge port connecting device 15a is also wrapped with an insulation layer 112a to reduce heat loss; the exhaust gas is transported to the mesh type heating liquid tank 111a through the discharge port connecting device 15a, which is convenient for arrangement on engineering equipment.

[0067] As a preferred embodiment, a temperature sensor is provided in the mesh-type heating liquid tank 111a for monitoring the temperature of the liquid in the mesh-type heating liquid tank 111a; preferably, electromagnetic switch valves are respectively provided on the first liquid pipe 13a and the second liquid pipe 14a. When the temperature sensor detects that the liquid in the mesh-type heating liquid tank 111a reaches a preset temperature, the corresponding electromagnetic switch valve on the first liquid pipe 13a is opened, and the liquid reaching the preset temperature enters the liquid storage tank 121a through the first liquid pipe 13a for storage so as to be used for the preheating system.

[0068] Example 3

[0069] See also Figure 6 and Figure 8 On the basis of effectively preheating the vehicle dismounting assembly 0, in order to reduce the energy consumption of engineering equipment and enable the engineering equipment to adapt to different working environments and flexibly switch according to the working environment, the present invention provides a preheating system for the vehicle dismounting assembly 0, and further improves the preheating device 1 (except for the preheating device 1, other structures are the same as those in the embodiment 1, which will not be repeated here); specifically, the preheating device 1 includes an exhaust gas recovery device 11b arranged at the rear end of the engine post-processing device 8, and a heat energy storage device 12b connected to the exhaust gas recovery device 11b,

[0070] The exhaust gas recovery device 11b includes a three-way valve 111b, a steering control motor 115b drivingly connected to the three-way valve 111b, a first interface 112b of the three-way valve 111b is used to connect to the rear end of the engine post-processing device 8, a second interface 113b of the three-way valve 111b is used to discharge exhaust gas, and a third interface 114b of the three-way valve 111b is connected to a mesh-type heating liquid tank 116b, and the mesh-type heating liquid tank 116b is provided with a heating tank liquid inlet 117b and a heating tank liquid outlet 118b;

[0071] The steering control motor 115b is used to control the valve core of the three-way valve 111b to operably connect the first interface 112b with the second interface 113b, or connect the first interface 112b with the third interface 114b;

[0072] The heat energy storage device 12b includes a liquid storage tank 121b and an energy storage water pump assembly 122b for providing pumping power for the energy storage liquid in the liquid storage tank 121b. The liquid storage tank 121b is provided with a liquid storage tank inlet 123b and a liquid storage tank outlet 124b. The liquid storage tank inlet 123b is connected to the heating tank outlet 118b through a first liquid pipe 13b, and the liquid storage tank outlet 124b is connected to the heating tank inlet 117b through a second liquid pipe 14b.

[0073] With such an arrangement, the present invention arranges a three-way valve 111b at the rear end of the engine after-treatment device 8, and controls the communication channel of the three-way valve 111b through the steering control motor 115b. With such an arrangement, it is possible to choose to directly discharge the heat of the engine exhaust gas or to recycle the heat of the engine exhaust gas according to the environment in which the engineering equipment is located. Specifically, in a conventional operating environment, the steering control motor 115b controls the valve core movement of the three-way valve 111b so that the first interface 112b is connected to the second interface 113b, and the exhaust heat is directly discharged; in an extremely cold operating environment, the steering control motor 115b controls the valve core movement of the three-way valve 111b so that the first interface 112b is connected to the second interface 113b, and the exhaust heat is directly discharged. The first interface 112b is connected to the third interface 114b, and the heat of the engine exhaust is used as the heat source of the preheating system, which can not only achieve the effect of energy saving and environmental protection, but also preheat the relevant components on the engineering equipment. At the same time, the use of this preheating device 1 can also improve the versatility of the equipment, so that the performance of the engineering equipment will not be reduced due to the influence of the working environment; the user only needs to control the communication channel of the three-way valve 111b according to the ambient temperature; and in some preferred embodiments, an ambient temperature sensor can also be set on the equipment, and the ambient temperature sensor is communicatively connected with the three-way valve 111b, so that the communication channel of the three-way valve 111b can be automatically controlled according to the ambient temperature.

[0074] As a preferred embodiment, a temperature sensor is provided in the mesh-type heating liquid tank 116b, and the temperature sensor is communicatively connected with the steering control motor 115b, and is used to monitor the liquid temperature in the mesh-type heating liquid tank 116b so as to control the opening of the channel corresponding to the valve core of the three-way valve 111b.

[0075] As a preferred embodiment, an exhaust pipe 15b is also provided at the end of the mesh heating liquid tank 116b away from the third interface 114b, and an intake pipe 16b is connected to the first interface 112b for connecting to the rear end of the engine after-treatment device 8; specifically, one end of the intake pipe 16b is connected to the rear end of the engine after-treatment device 8 through a flange, and the other end is connected to the first interface 112b. In some preferred embodiments, an insulation layer can also be wrapped around the intake pipe 16b to prevent heat loss; an exhaust hood 17b is connected to the second interface 113b to discharge the engine exhaust gas.

[0076] Example 4

[0077] The present invention further provides an engineering equipment, including a preheating system provided in Example 1 or Example 2 or Example 3; in this embodiment, an excavator is taken as an example for explanation, a preheating channel 3 is provided on each of the supporting wheel shafts 02 of the left and right two traveling mechanisms 01 of the lower vehicle assembly 0 of the excavator, and each of the preheating channels 3 is connected to the central rotating member 2 through a liquid outlet branch pipe 5 and a liquid inlet branch pipe 4 to form a preheating circuit;

[0078] The exhaust gas recovery device 11a / 11b in the preheating device 1 provided in Example 2 and Example 3 is arranged at the rear end of the engine after-treatment device 8 of the excavator's power assembly, and the heat storage device 12a / 12b is arranged on the front side of the right platform of the excavator's rotating platform. The first liquid pipe 13a / 13a and the second liquid pipe 14a / 14b are placed on the side of the rotating platform and the hydraulic oil tank and the fuel tank. The heat generated by the exhaust gas of the excavator engine can be recovered and stored through different energy conversion methods, thereby reducing energy damage; and the installation of the entire preheating system does not require changing the original overall structure of the excavator, does not require additional rotating supports, and its installation method is simple and highly versatile, and can be installed and applied to excavators of different specifications and models.

[0079] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A preheating system for a vehicle disembarking assembly, characterized in that: The dismounting assembly includes a traveling mechanism, and the traveling mechanism includes a plurality of supporting wheel shafts and supporting wheels correspondingly arranged on the supporting wheel shafts, and sealing rings are respectively arranged at both ends of the supporting wheel; The preheating system includes a preheating device for providing a heat source, a central rotating member connected to the preheating device, and a preheating channel arranged on the supporting wheel shaft; The preheating channel is arranged through along the axial direction of the supporting wheel shaft; one end of the preheating channel is sealed connected to a liquid inlet branch pipe, and the other end is sealed connected to a liquid outlet branch pipe; a plurality of the liquid inlet branches are arranged in parallel, and a plurality of the liquid outlet branches are arranged in parallel; A plurality of the liquid inlet branch pipes are connected to the first liquid inlet interface of the central rotating member through the first main liquid inlet pipe; a plurality of the liquid outlet branch pipes are connected to the first liquid outlet interface of the central rotating member through the first main liquid outlet pipe.

2. A preheating system for an off-vehicle assembly according to claim 1, characterized in that: The central rotating member comprises a rotating member body, and a liquid inlet channel and a liquid outlet channel are arranged in the rotating member body; The first liquid inlet interface is provided at one end of the liquid inlet channel, and the second liquid inlet interface is provided at the other end, and the second liquid inlet interface is connected to the liquid outlet of the preheating device; The first liquid outlet interface is disposed at one end of the liquid outlet channel, and the second liquid outlet interface is disposed at the other end thereof, and the second liquid outlet interface is connected to the liquid inlet of the preheating device.

3. A preheating system for an exit assembly according to claim 1 or 2, characterized in that: The preheating device includes a preheating box for accommodating a preheating medium, a preheating pump for pumping the preheating medium, and a heating device arranged in the preheating box, wherein the liquid outlet of the preheating pump is connected to the liquid inlet channel of the rotating member body; the preheating box is also provided with a liquid inlet, which is connected to the liquid outlet channel of the rotating member body.

4. A preheating system for an exit assembly according to claim 1 or 2, characterized in that: The preheating device includes an exhaust gas recovery device arranged at the rear end of the engine post-processing device, and a heat energy storage device connected to the exhaust gas recovery device. The exhaust gas recovery device comprises a mesh-type heating liquid tank, a heat preservation layer wrapped around the outside of the mesh-type heating liquid tank, and an exhaust hood arranged at the end of the mesh-type heating liquid tank away from the engine exhaust gas connection end; the end of the mesh-type heating liquid tank away from the exhaust hood is used to connect with the rear end of the engine post-processing device to heat the liquid in the mesh-type heating liquid tank by the exhaust gas heat, and the mesh-type heating liquid tank is provided with a heating tank liquid inlet and a heating tank liquid outlet; The thermal energy storage device includes a liquid storage tank and an energy storage water pump assembly for providing pumping power for the energy storage liquid in the liquid storage tank. The liquid storage tank is provided with a liquid storage tank inlet and a liquid storage tank outlet. The liquid storage tank inlet is connected to the liquid outlet of the heating box through a first liquid pipe, and the liquid storage tank outlet is connected to the liquid inlet of the heating box through a second liquid pipe.

5. A preheating system for an exit assembly according to claim 4, characterized in that: The exhaust gas recovery device is connected to the rear end of the engine post-processing device through an exhaust port connecting device.

6. A preheating system for an off-vehicle assembly according to claim 5, characterized in that: The exhaust port connecting device includes a flange pipe and an exhaust gas heat collection cavity, one end of the flange pipe is connected to the exhaust gas heat collection cavity, and the other end is connected to the rear end of the engine after-treatment device, the exhaust gas heat collection cavity has an opening, and the opening is connected to the air inlet end of the mesh type heating liquid tank through a clamp.

7. A preheating system for an exit assembly according to claim 4, characterized in that: A temperature sensor is provided in the mesh type heating liquid tank for monitoring the temperature of the liquid in the mesh type heating liquid tank.

8. A preheating system for an exit assembly according to claim 1 or 2, characterized in that: The preheating device includes an exhaust gas recovery device arranged at the rear end of the engine post-processing device, and a heat energy storage device connected to the exhaust gas recovery device. The exhaust gas recovery device includes a three-way valve and a steering control motor drivingly connected to the three-way valve, wherein the first interface of the three-way valve is used to connect to the rear end of the engine post-processing device, the second interface of the three-way valve is used to discharge the exhaust gas, and the third interface of the three-way valve is connected to a mesh-type heating liquid tank, and the mesh-type heating liquid tank is provided with a heating tank liquid inlet and a heating tank liquid outlet; The steering control motor is used to control the valve core of the three-way valve to operably connect the first interface with the second interface, or connect the first interface with the third interface; The thermal energy storage device includes a liquid storage tank and an energy storage water pump assembly for providing pumping power for the energy storage liquid in the liquid storage tank. The liquid storage tank is provided with a liquid storage tank inlet and a liquid storage tank outlet. The liquid storage tank inlet is connected to the liquid outlet of the heating box through a first liquid pipe, and the liquid storage tank outlet is connected to the liquid inlet of the heating box through a second liquid pipe.

9. A preheating system for an off-vehicle assembly according to claim 9, characterized in that: A temperature sensor is provided in the mesh-type heating liquid tank, and the temperature sensor is communicatively connected with the steering control motor and is used to monitor the liquid temperature in the mesh-type heating liquid tank so as to control the opening of the corresponding channel of the valve core of the three-way valve.

10. An engineering equipment, characterized in that: It comprises a preheating system as described in any one of claims 1-9.

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