Interval lubricating device for mortar vehicle

Abstract

The utility model relates to an interval lubricating device for a mortar vehicle. The interval lubricating device for the mortar vehicle comprises a lubricating grease pump and a control unit, the lubricating grease pump comprises an oil barrel, an oil cover, a plurality of grease outlets, a pressure gauge and a grease adding opening; the bottom end surface of the oil drum is fixedly connected with a communicating block; the communicating blocks are arranged in an annular array manner; the oil cover is arranged at the top of the oil drum; the grease outlet is formed in one side of the communicating block and communicates with the oil drum; the pressure gauge is fixedly connected to the upper surface of the communicating block; the grease adding opening is formed in the bottom end of the oil drum; the control unit is connected with the lubricating grease pump. According to the scheme, the bearing in the slurry storage tank can be automatically lubricated in time according to the working condition, the slurry leakage problem caused by abrasion due to insufficient lubrication of the bearing is effectively avoided, and the equipment utilization rate is increased. And a lubricating grease filling worker is not needed, so that the labor cost is effectively reduced. Meanwhile, by setting the dosage of the filled lubricating grease, waste is effectively reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication devices, in particular to an interval lubrication device for a mortar truck. Background Art

[0002] In the construction industry, mortar trucks are often needed to store and transport slurry for simultaneous grouting. Mortar trucks are specialized vehicles used to transport dry-mix mortar and are an integral component of dry-mix mortar logistics and construction systems. The slurry storage tank is a crucial component of the mortar truck, used to store mortar.

[0003] In the process of loading the mortar into the slurry tank and transporting it to the construction site, in order to avoid the problem of sedimentation and solidification of the mortar, a stirring shaft is provided in the slurry tank to stir the mortar in the slurry tank. In order to make the stirring shaft more stable when rotating, the bearings of the fixed stirring shaft in the slurry tank need to be lubricated. However, the lubrication method of the slurry tank in the existing mortar truck is generally to manually add lubricating grease to the bearings of the fixed stirring shaft. However, since the manual addition time is not fixed, it is necessary to frequently check the lubrication condition of the bearings, or set a fixed time to add grease. However, due to different working conditions, the lubricating grease cannot be lubricated to the bearings in time, which increases the friction between the slurry tank bearings and the stirring shaft, and then causes the bearing seals to wear, slurry to enter the bearings, and leakage. Production needs to be stopped for maintenance, which greatly affects efficiency.

[0004] Therefore, there is an urgent need to design an interval lubrication device for mortar trucks that can timely and automatically lubricate the bearings in the mortar storage tank according to the construction situation. This effectively avoids mortar leakage caused by wear and tear due to insufficient bearing lubrication and improves equipment utilization. This eliminates the need for a dedicated lubricant refill specialist, effectively reducing labor costs. Furthermore, by setting the amount of lubricant to be refilled, waste is effectively reduced, saving costs. Utility Model Content

[0005] To overcome the problems existing in the related art, the present application provides an interval lubrication device for a mortar truck. This device can timely and automatically lubricate the bearings in the mortar storage tank according to the construction situation, effectively avoiding mortar leakage caused by wear and tear due to insufficient bearing lubrication, thereby improving equipment utilization. It also eliminates the need for a lubricant filling specialist, effectively reducing labor costs. Furthermore, by setting the amount of lubricant to be filled, waste is effectively reduced, saving costs.

[0006] The first aspect of the present application is to provide an interval lubrication device for a mortar vehicle, comprising a lubricating grease pump and a control unit; the lubricating grease pump comprises an oil barrel, an oil cap, several grease outlets, a pressure gauge and a grease filling port; a connecting block is fixedly connected to the bottom surface of the oil barrel, and the connecting blocks are arranged in a circular array; the oil cap is arranged at the top of the oil barrel and fixedly connected to the oil barrel; any one of the grease outlets is arranged on one side of the connecting block and is connected to the oil barrel; the pressure gauge is fixedly connected to the upper surface of the connecting block and corresponds one-to-one to the connecting block; the grease filling port is arranged at the bottom end of the oil barrel; the control unit is connected to the lubricating grease pump, and is used to control the frequency and amount of grease added to the lubrication grease filling point by the lubricating grease pump.

[0007] In a preferred technical solution of the present application, an oil filter is further provided on the connecting block, and the oil filter is arranged at the grease outlet.

[0008] In a preferred technical solution of the present application, the lubricating grease pump further includes a constant temperature control mechanism; the constant temperature control mechanism is arranged inside the oil barrel and is used to heat the lubricating grease inside the oil barrel.

[0009] In a preferred technical solution of the present application, the constant temperature control mechanism includes a temperature sensor arranged inside the oil barrel; an electric heating ring is provided on the outer peripheral side of the temperature sensor; and the electric heating ring is fixedly connected to the oil barrel.

[0010] In a preferred technical solution of the present application, the electric heating ring is fixedly connected to a plurality of heat absorbing plates; a heating sleeve is fixedly connected to one side of any one of the heat absorbing plates; and the heating sleeve is sleeved on the surface of the connecting block.

[0011] In a preferred technical solution of the present application, the lubricating grease pump also includes a protective mechanism arranged on the surface of the connecting block; the protective mechanism includes a rotating plate, and the two rotating plates are respectively fixed on both sides of the surface of the heating sleeve by pins; the rotating plate is connected to an arc-shaped clamping plate, and the center of the inner arc surface of the arc-shaped clamping plate is on the same horizontal line as the oil filter.

[0012] In a preferred technical solution of the present application, the protective mechanism also includes a spring and a spring damper; the spring damper is fixedly connected to the rotating plate; the spring is sleeved on the spring damper, and one end of the spring is fixedly connected to the rotating plate, and the other end is fixedly connected to the connecting block.

[0013] In a preferred technical solution of the present application, the control unit includes an infinite cycle time relay and a contactor; the infinite cycle time relay is electrically connected to the contactor; and the contactor is connected to the motor of the lubricating grease pump.

[0014] In a preferred technical solution of the present application, a high-precision pressure sensor is provided inside the pressure gauge.

[0015] In a preferred technical solution of the present application, the lubricating grease pump further includes a plurality of safety valves; the plurality of safety valves are arranged at a plurality of the grease outlets and are connected to the pressure gauge.

[0016] The technical solution provided by this application may have the following beneficial effects:

[0017] (1) By installing the lubricating grease pump provided by the present application next to the agitator shaft, the grease outlet is connected to the lubrication grease injection point of the bearing through a hose, thereby automatically adding lubricating grease to the bearing on the agitator shaft, effectively avoiding the problems of seal wear of the slurry storage tank bearing, slurry entering the bearing, and leakage requiring shutdown for maintenance caused by untimely manual addition. Not only can the lubricating grease be automatically added, but it can also play a good sealing role, thereby improving equipment utilization, reducing equipment failures, and saving manpower and resource costs. At the same time, the output contact of the infinite loop time relay is used to control the contactor, intermittently control the lubricating grease pump (i.e., control the frequency of lubricating grease injection), and by adjusting the infinite loop relay time, the amount of lubricating grease can be controlled, which can not only ensure that the bearing is lubricated, but also control the amount of lubricating grease, reduce waste, and thus better save costs.

[0018] (2) By setting up an oil filter, the lubricating grease is filtered when it passes through the hose from the grease outlet to the lubrication grease injection point, which can effectively prevent the impurities in the lubricating grease from affecting the slurry tank bearing.

[0019] (3) By setting a temperature sensor and an electric heating ring, when it is detected that the temperature of the lubricating grease in the oil barrel is low, the electric heating ring is started to heat the lubricating grease, thereby avoiding the reduction of the fluidity of the lubricating grease due to low temperature. At the same time, through the heat transfer between the heat absorbing plate and the heating sleeve, the connecting block is heated synchronously, so that when the lubricating grease is input into the connecting block, the fluidity will not be reduced due to too rapid temperature drop, which will affect the normal use of the lubricating grease, further ensuring the smooth flow of the lubricating grease.

[0020] (4) By providing a protective mechanism, when the hose is installed, the hose can be clamped by the arc-shaped clamping plate, which further improves the stability of the hose installation, thereby effectively preventing the hose from falling due to vibration during transportation.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0023] Figure 1 1 is a schematic structural diagram of a mortar truck interval lubrication device according to an embodiment of the present application;

[0024] Figure 2 2. It is a schematic diagram of the positional relationship structure of the interval lubrication device for a mortar truck shown in an embodiment of the present application from a second perspective;

[0025] Figure 3 This is a schematic diagram of the disassembled structure of the oil drum and constant temperature control mechanism of the interval lubrication device for a mortar truck shown in an embodiment of the present application;

[0026] Figure 4 This is a schematic structural diagram of the positional relationship between the connecting block and the protective mechanism of the interval lubrication device for a mortar truck shown in an embodiment of the present application;

[0027] Figure 5 yes Figure 4 A in the middle is an enlarged structural diagram;

[0028] Figure 6 It is a schematic diagram of the circuit principle structure of the interval lubrication device for a mortar truck shown in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1. Oil drum; 2. Spring damper; 3. Oil cap; 4. Grease outlet; 5. Pressure gauge; 6. Grease filling port; 7. Connecting block; 8. Temperature sensor; 9. Electric heating ring; 10. Heat absorbing plate; 11. Heating jacket; 12. Rotating plate; 13. Arc clamping plate; 14. Oil filter; 15. Spring. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0032] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] The lubrication method of the slurry tank in the existing mortar truck is generally to manually add lubricating grease to the bearing of the fixed stirring shaft. However, since the manual addition time is not fixed, it is necessary to frequently check the lubrication condition of the bearing, or set a fixed time for addition. However, due to different working conditions, the lubricating grease cannot lubricate the bearing in time, which increases the friction between the slurry tank bearing and the stirring shaft, and causes the bearing seal to wear, slurry to enter the bearing, and leakage. Production needs to be stopped for maintenance, which greatly affects efficiency.

[0035] To address the above issues, the present invention provides an interval lubrication device for mortar trucks. This device can automatically and timely lubricate the bearings in the mortar storage tank according to the construction situation, effectively avoiding mortar leakage caused by wear and tear due to insufficient bearing lubrication, thereby improving equipment utilization. This eliminates the need for a dedicated lubricant filling specialist, effectively reducing labor costs. Furthermore, by controlling the amount of lubricant to be filled, waste is effectively reduced, saving costs.

[0036] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0037] Example

[0038] See also Figures 1-6 The mortar truck lubrication device of the present application includes a lubricating grease pump and a control unit. The lubricating grease pump includes an oil barrel 1, an oil cap 3, several grease outlets 4, a pressure gauge 5, and a grease filling port 6. The oil cap 3 is disposed on the top of the oil barrel 1 and is fixedly connected to the oil barrel 1. The grease outlet 4, the pressure gauge 5, and the grease filling port 6 are all disposed on the oil barrel.

[0039] Specifically, the material of the oil barrel 1 is preferably transparent resin. By adopting transparent resin, it is easy to observe the storage amount of lubricating grease. The oil cap 3 is fixedly connected to the oil barrel 1, and the oil cap 3 and the oil barrel 1 are of an integrated design, which is more convenient and quick. Several of the grease outlets are connected to the oil barrel 1 and the lubrication grease injection point of the slurry storage tank. Exemplarily, the grease outlet 4 is connected to the interior of the oil barrel 1, and is connected to the lubrication grease injection point of the slurry storage tank through a hose, which is used to transport the grease in the oil barrel 1 to the lubrication grease injection point. The grease filling port 6 is provided at the bottom end of the oil barrel 1, and is used to add lubricating grease to the inside of the oil barrel 1.

[0040] In order to facilitate the installation of the pressure gauge 5, a connecting block 7 is fixedly connected to the bottom surface of the oil barrel 1. The connecting blocks 7 are arranged in a circular array, that is, the connecting blocks are arranged in sequence along the circumferential direction of the oil barrel 1. The pressure gauge 5 is fixedly connected to the upper surface of the connecting block 7 and corresponds one-to-one with the connecting block 7. Exemplarily, the outer shell of the pressure gauge 5 is made of 304 stainless steel, and a high-precision pressure sensor is provided inside the pressure gauge 5, which further improves the accuracy of the pressure gauge 5. Any one of the grease outlets 4 is provided on one side of the connecting block 7. Exemplarily, the grease outlet is provided on the outside of the connecting block 7 and is connected to the oil barrel 1 through the connecting block 7.

[0041] Furthermore, in order to prevent impurities in the lubricating grease from affecting the performance of the slurry tank bearing, the connecting block 7 is provided with an oil filter 14, and the oil filter 14 is arranged at the grease outlet 4. Furthermore, in order to prevent the lubricating grease from having poor fluidity due to low temperature, Figures 2 to 3 As shown, the lubricating grease pump further includes a constant temperature control mechanism, which is disposed inside the oil barrel 1 and is used to heat the lubricating grease inside the oil barrel 1 .

[0042] Specifically, the constant temperature control mechanism includes a temperature sensor 8 disposed inside the oil barrel 1. The temperature sensor 8 is disposed at the bottom end of the oil barrel 1 and is fixedly connected to the oil barrel. An electric heating ring 9 is provided on the outer peripheral side of the temperature sensor 8, and the electric heating ring 9 is fixedly connected to the oil barrel 1. In order to achieve heat conduction, the electric heating ring 9 is fixedly connected to a plurality of heat absorbing plates 10. A heating sleeve 11 is fixedly connected to one side of any of the heat absorbing plates 10, and the heating sleeve 11 is sleeved on the surface of the connecting block 7. When the temperature sensor 8 detects that the temperature of the lubricating grease in the oil barrel 1 is too low, the electric heating ring 9 is activated to heat the lubricating grease inside the oil barrel 1, thereby accelerating the flow of the lubricating grease in the oil barrel 1. At the same time, the temperature of the electric heating ring 9 is absorbed by the heat absorbing plate 10 and transferred to the heating sleeve 11, thereby conducting heat to the connecting block 7, so that the temperature of the connecting block is close to the temperature of the lubricating grease. Therefore, when the lubricating grease flows through the connecting block 7, the fluidity of the lubricating grease will not be reduced due to excessive temperature drop, further ensuring the smoothness of the flow of the lubricating grease.

[0043] Furthermore, if Figures 4 and 5 As shown, the lubricating grease pump also includes a protective mechanism provided on the surface of the connecting block 7, and the protective mechanism is used to protect the installation of the hose, wherein the hose is used to connect the grease outlet 4 and the slurry storage tank. Specifically, the protective mechanism includes a rotating plate 12, and the two rotating plates are rotatably fixed on both sides of the surface of the heating sleeve 11 through pins. The rotating plate 12 is connected to an arc-shaped clamping plate 13, and the center of the inner arc surface of the arc-shaped clamping plate 13 is on the same horizontal line as the oil filter 14, and the distance between the two arc-shaped clamping plates 13 (that is, the diameter of the circle formed by the inner arc surface) is smaller than the diameter of the hose, so that when the hose is plugged into the oil filter 14 inside the two arc-shaped clamping plates 13, the arc-shaped clamping plate 13 can guide the hose, making the connection between the hose and the oil filter 14 more convenient. In order to enable the hose to be more firmly fixed on the oil filter 14, the protective mechanism also includes a spring 15 and a spring damper 2. The spring damper is fixedly connected to the rotating plate 12. The spring 15 is sleeved on the spring damper 2, and one end of the spring 15 is fixedly connected to the rotating plate 12, and the other end is fixedly connected to the connecting block.

[0044] When the hose is connected to the oil filter 14, one end of the hose passes through the middle of the two arc-shaped clamping plates 13 and is sleeved on the oil filter 14. In this process, since the diameter of the hose is larger than the distance between the arc-shaped clamping plates 13, the hose gives the two arc-shaped clamping plates 13 a stress to expand outward. Driven by the rotating plate, the two arc-shaped clamping plates 13 move away from each other. At this time, the spring 15 is in a stretched state. After the hose is connected to the oil filter 14, the spring 15 rebounds, driving the arc-shaped clamping plates 13 to move toward each other until the arc-shaped clamping plates 13 abut against the hose and tightly clamp the hose, thereby effectively avoiding the problem of the hose falling off due to the vibration generated by the movement of the mortar truck.

[0045] like Figure 6 As shown, the control unit is connected to the lubricating grease pump and is used to control the frequency and amount of grease added by the lubricating grease pump to the lubricating grease injection point. Specifically, the control unit includes an infinite cycle time relay and a contactor, the infinite cycle time relay is electrically connected to the contactor, and the electrical connector is connected to the motor of the lubricating grease pump. Exemplarily, the model of the infinite cycle time relay is 220V DH48S-S, and the model of the contactor is CJX2-1810. After power is turned on, when the infinite cycle time relay delay is completed, its output contacts will close, thereby controlling the coil of the contactor to start, and then controlling the motor of the lubricating grease pump to start, thereby transporting the lubricating grease in the oil barrel 1 to the grease outlet 4, and then transporting it to the lubricating grease injection point through the hose.

[0046] Furthermore, to achieve single-line control of multiple grease outlets 4, the grease pump also includes multiple safety valves; these safety valves are installed at multiple grease outlets 4 and connected to the pressure gauge 5. By providing multiple grease outlets 4, the system can be used in working environments requiring multi-point lubrication. The interaction between the safety valves and the pressure gauge 5 ensures that even if a component at a single grease outlet 4 fails, it will not affect the output of grease from other grease outlets 4.

[0047] In one embodiment, when the bearings of the slurry storage tank used to fix the stirring shaft are small and multiple points need to be lubricated, several grease outlets 4 can be directly connected to the lubrication grease injection points through a hose, so that the lubricating grease can reach the lubrication grease injection points directly from the grease outlet, which has a simple structure, fast grease output and low cost.

[0048] In one embodiment, when facing a working condition where single-point lubrication is required and grease injection is required during operation, several grease outlets 4 can be equipped with progressive distribution valves, and the grease outlets 4 can be connected to the lubrication grease injection points. When the equipment is running, the lubricating grease can be automatically and sequentially distributed to each lubrication grease injection point, ensuring that each lubrication point can obtain an appropriate amount of grease, avoiding the problem of over-lubrication or under-lubrication.

[0049] In one embodiment, when the bearings of the slurry storage tank used to fix the stirring shaft are large and multiple points need to be lubricated, several of the grease outlets 4 can be equipped with motor distributors, and the grease outlets 4 can be connected to the lubrication grease injection points. Driven by the motor distributor, the distribution amount and distribution time of the grease can be accurately controlled, ensuring that each lubrication point can obtain sufficient grease, and the lubrication cycle (frequency) and the amount of grease can be flexibly set according to actual working conditions, effectively reducing waste and lowering costs.

[0050] Working principle:

[0051] In actual application scenarios, the lubricating grease pump is installed next to the agitator shaft of the slurry storage tank, the grease outlet 4 is connected and fixed to one end of the hose, and the other end of the hose is connected to the lubrication grease injection point of the agitator shaft. When the bearing needs to be lubricated, the lubricating grease pump is turned on, and under the control of the control unit, the lubricating grease is injected into the bearing on the agitator shaft, and the bearing of the agitator shaft can be automatically lubricated. The whole process does not require human intervention.

[0052] In this embodiment, by installing the lubricating grease pump provided by this application next to the agitator shaft, the grease outlet is connected to the bearing lubrication grease injection point through a hose, thereby automatically adding lubricating grease to the bearing on the agitator shaft, effectively avoiding the problems of seal wear of the slurry storage tank bearing, slurry entering the bearing, and leakage requiring production suspension and maintenance caused by manual addition in a timely manner. Not only can the lubricating grease be automatically added, but it can also play a good sealing role, thereby improving equipment utilization, reducing equipment failures, and saving manpower and resource costs. At the same time, the output contact of the infinite loop time relay controls the contactor to intermittently control the lubricating grease pump, and by adjusting the infinite loop relay time, the amount of lubricating grease is controlled (i.e., the frequency of lubricating grease injection), which can not only ensure that the bearing is lubricated, but also control the amount of lubricating grease, reduce waste, and thus better save costs. By providing an oil filter, the lubricating grease is filtered when the lubricating grease passes through the hose from the grease outlet to the lubricating grease injection point, which can effectively avoid the impact of impurities in the lubricating grease on the slurry storage tank bearing. By installing a temperature sensor and an electric heating ring, when the lubricating grease in the oil barrel is detected to be at a low temperature, the electric heating ring is activated to heat the lubricating grease, preventing the lubricating grease from losing fluidity due to low temperatures. Simultaneously, heat transfer between the heat absorbing plate and the heating jacket synchronizes the temperature of the connecting block, preventing the lubricating grease from losing fluidity due to a rapid drop in temperature when entering the connecting block, which could affect its normal use and further ensure smooth flow of the lubricating grease. The protective mechanism allows the curved clamping plate to clamp the hose during installation, further improving the stability of the hose installation and effectively preventing the hose from falling due to vibration during transportation.

[0053] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A mortar truck interval lubrication device, characterized in that: Includes lubricating grease pump and control unit; The lubricating grease pump comprises an oil barrel (1), an oil cover (3), a plurality of grease outlets (4), a pressure gauge (5) and a grease filling port (6); The bottom surface of the oil barrel (1) is fixedly connected with a communication block (7), and the communication blocks (7) are arranged in a ring array; The oil cover (3) is arranged on the top of the oil barrel (1) and is fixedly connected to the oil barrel (1); Any one of the grease outlets (4) is arranged on one side of the communication block (7) and is connected to the oil barrel (1); The pressure gauge (5) is fixedly connected to the upper surface of the communication block (7) and corresponds one-to-one with the communication block (7); The grease filling port (6) is arranged at the bottom end of the oil barrel (1); The control unit is connected to the lubricating grease pump and is used to control the frequency and amount of grease added by the lubricating grease pump to the lubricating grease injection points.

2. The interval lubrication device for mortar truck according to claim 1, characterized in that: The communication block (7) is also provided with an oil filter (14), and the oil filter (14) is arranged at the grease outlet (4).

3. The interval lubrication device for mortar truck according to claim 2, characterized in that: The lubricating grease pump further includes a constant temperature control mechanism; The constant temperature control mechanism is arranged inside the oil barrel (1) and is used to heat the lubricating grease inside the oil barrel (1).

4. The interval lubrication device for mortar truck according to claim 3, characterized in that: The constant temperature control mechanism includes a temperature sensor (8) arranged inside the oil barrel (1); An electric heating ring (9) is provided on the outer peripheral side of the temperature sensor (8); The electric heating ring (9) is fixedly connected to the oil drum (1).

5. The interval lubrication device for mortar truck according to claim 4, characterized in that: The electric heating ring (9) is fixedly connected to a plurality of heat absorbing plates (10); A heating jacket (11) is fixedly connected to one side of any one of the heat absorbing plates (10); The heating sleeve (11) is sleeved on the surface of the connecting block (7).

6. The interval lubrication device for mortar truck according to claim 5, characterized in that: The lubricating grease pump further comprises a protective mechanism arranged on the surface of the connecting block (7); The protection mechanism comprises a rotating plate (12), and the two rotating plates (12) are respectively fixed to both sides of the surface of the heating sleeve (11) through pins; The rotating plate (12) is connected to an arc-shaped clamping plate (13), and the center of the inner arc surface of the arc-shaped clamping plate (13) and the oil filter (14) are on the same horizontal line.

7. The interval lubrication device for a mortar truck according to claim 6, characterized in that: The protection mechanism further comprises a spring (15) and a spring damper (2); The spring damper (2) is fixedly connected to the rotating plate (12); The spring (15) is sleeved on the spring damper (2), and one end of the spring (15) is fixedly connected to the rotating plate (12), and the other end is fixedly connected to the connecting block (7).

8. The interval lubrication device for a mortar truck according to claim 1, characterized in that: The control unit includes an infinite cycle time relay and a contactor; The infinite cycle time relay is electrically connected to the contactor; The contactor is connected to the motor of the lubricating grease pump.

9. The interval lubrication device for a mortar truck according to claim 1, characterized in that: A high-precision pressure sensor is provided inside the pressure gauge (5).

10. The interval lubrication device for a mortar truck according to claim 1, characterized in that: The lubricating grease pump also includes several safety valves; The plurality of safety valves are arranged at the plurality of grease outlets (4) and are connected to the pressure gauge (5).

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