Top-mounted power take-off control system and method and engineering equipment
Through parallel solenoid valve sets and alternating electricity, the problem of solenoid valve burnout in the transfer box force-taking control system is solved, the reliability and safety of the system are improved, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202411372154.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-10
AI Technical Summary
In the existing transfer box force-taking control system, the solenoid valve is prone to burn out due to large heat generation after working for a long time, resulting in failure.
Use at least two sets of solenoid valves to control the transfer box force-taking cylinder and shift cylinder, and reduce the working time of each solenoid valve by alternating electricity, and use position self-locking function and indication signals to ensure that the cylinder is in the correct position. gear position to avoid misoperation.
It effectively reduces the probability of solenoid valve burnout, improves the reliability and safety of the system, and extends the service life of the equipment.
Smart Images
Figure CN119283622A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of engineering equipment, and in particular to a bodywork power take-off control system, method and engineering equipment. Background Art
[0002] In today's engineering construction, various types of construction machinery play an important role, especially construction machinery using automobile chassis, which has been widely used due to its outstanding advantages in mobility. Construction machinery using automobile chassis, such as concrete pump trucks and truck cranes, are mostly composed of two parts: automobile chassis and special upper parts. The output power of the engine of the automobile chassis is taken out through the power take-off device to drive the special upper parts to work. There are two ways to take power from the automobile chassis. One is to take power directly from the engine; the other is to use a transfer case to take power. The transfer case power take-off is to switch the automobile chassis from the "driving mode" to the "upper part power take-off" mode through the transfer case, so that the power of the engine is transmitted to the special upper part through the clutch, gearbox, and drive shaft through the transfer case.
[0003] In the existing transfer case power take-off control system, the transfer case power take-off cylinder is usually controlled by a two-position three-way solenoid valve Y4, and the transfer case shift cylinder is controlled by two two-position three-way solenoid valves Y5 and Y6. Since the power take-off device (spring reset) of the chassis transfer case requires a power gas source to maintain the power take-off state, the two-position three-way solenoid valve Y4 is always in the energized state when the upper body is taking power. When the working duration is long, it is easy to burn out due to the high heat generation. Therefore, it is necessary to design a upper body power take-off control system that can reduce the probability of the power take-off solenoid valve burning out when the upper body is working for a long time. Summary of the invention
[0004] In response to the above-mentioned problems in the prior art, the present application proposes a bodywork power take-off control system, method and engineering equipment, which can reduce the probability of the power take-off solenoid valve burning out when the bodywork lasts for a long time.
[0005] One aspect of the present invention provides a bodywork power take-off control system, which includes a transfer case power take-off cylinder and a transfer case shift cylinder. The transfer case power take-off cylinder is controlled by air supply of at least two sets of solenoid valve groups arranged in parallel. The solenoid valve groups include a first solenoid valve and a second solenoid valve. Any of the first solenoid valves can be energized to control the transfer case power take-off cylinder to a power take-off gear position, and any of the second solenoid valves can be energized to control the transfer case power take-off cylinder to a stop power take-off gear position. Each of the first solenoid valves can be energized alternately.
[0006] As a further improvement of the above technical solution:
[0007] The above-mentioned upper-mounted power take-off control system, further, the transfer case shift cylinder is controlled by the third solenoid valve and the fourth solenoid valve to supply air, the transfer case shift cylinder has a position self-locking function, the third solenoid valve is energized to control the transfer case shift cylinder to be in the driving gear position and locked, the fourth solenoid valve is energized to control the transfer case shift cylinder to be in the neutral gear position and locked.
[0008] In the above-mentioned bodywork power take-off control system, further, the first solenoid valve, the third solenoid valve and the fourth solenoid valve are all two-position three-way solenoid valves, and the second solenoid valve is a two-position two-way solenoid valve.
[0009] The above-mentioned upper-mounted power take-off control system, further, the transfer case power take-off cylinder is connected to a first indication signal, and the transfer case shift cylinder is connected to a second indication signal, the first indication signal can indicate that the transfer case power take-off cylinder is in a power take-off gear or a stop power take-off gear, and the second indication signal can indicate that the transfer case shift cylinder is in a driving gear or a neutral gear.
[0010] Another aspect of the present invention provides a method for controlling a body load power take-off. Based on the body load power take-off control system as described above, the method for controlling a body load power take-off comprises the following steps:
[0011] Start the engine and turn on the power take-off switch;
[0012] Detect the gear position of the transfer case power take-off cylinder and the transfer case shift cylinder;
[0013] Determining whether the transfer case power take-off cylinder is in a power take-off gear position and whether the transfer case shift cylinder is in a neutral gear position;
[0014] If the transfer case power take-off cylinder is in the power take-off gear and the transfer case shift cylinder is in the neutral gear, the clutch is closed and the power take-off indicator light is on; if the transfer case shift cylinder is in the driving gear, the fourth solenoid valve is energized to control the transfer case shift cylinder to be in the neutral gear and locked; if the transfer case power take-off cylinder is in the stop power take-off gear, each first solenoid valve is alternately energized to control the transfer case power take-off cylinder to be in the power take-off gear until the power take-off indicator light is on;
[0015] Perform upper load power take-off operation.
[0016] As a further improvement of the above technical solution:
[0017] The above-mentioned upper load power take-off control method further comprises the following steps: each of the first solenoid valves is energized and works for a first preset time in sequence, and two of the first solenoid valves are energized and works for a second preset time in sequence when they are alternating, and the duration of the first preset time is greater than the duration of the second preset time.
[0018] The above-mentioned upper-mounted power take-off control method further comprises the following steps: when the transfer case power take-off cylinder needs to stop taking power, each first solenoid valve loses power, and at the same time each second solenoid valve is energized and loses power after a third preset time.
[0019] The above-mentioned upper-mounted power take-off control method further, after turning on the power take-off switch, when it is detected that the transfer case shift cylinder is in the neutral position, the fourth solenoid valve loses power; after turning off the power take-off switch, when it is detected that the transfer case shift cylinder is in the driving gear position, the third solenoid valve loses power.
[0020] Another aspect of the present invention provides an engineering equipment, the engineering equipment comprising the above-mentioned bodywork power take-off control system.
[0021] Another aspect of the present invention provides an engineering equipment, wherein the engineering equipment comprises the above-mentioned upper load force take-off control method.
[0022] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the present invention can be achieved.
[0023] A power take-off control system, method and engineering equipment provided by the present invention have at least the following beneficial effects compared with the prior art: since the transfer case power take-off cylinder is controlled by at least two sets of solenoid valve groups arranged in parallel to control the air supply, the solenoid valve group includes a first solenoid valve and a second solenoid valve, any first solenoid valve being energized can control the transfer case power take-off cylinder to be in a power take-off gear position, and any second solenoid valve being energized can control the transfer case power take-off cylinder to be in a stop power take-off gear position, and each first solenoid valve can be energized alternately to continuously realize that the transfer case power take-off cylinder is in a power take-off gear position, thereby shortening the working time of each first solenoid valve, thereby reducing the probability of the power take-off solenoid valve burning out when the upper body works for a long time.
[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.
[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:
[0027] Figure 1 The schematic diagram of the structure of the bodywork power take-off control system provided by an embodiment of the present invention is shown.
[0028] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.
[0029] Description of reference numerals:
[0030] 100- upper body power take-off control system, 110- transfer case power take-off cylinder, 111- first indication signal, 120- transfer case shift cylinder, 121- second indication signal, 130- first solenoid valve, 131- second solenoid valve, 140- third solenoid valve, 141- fourth solenoid valve, 150- power take-off switch, 160- controller, 170- CAM main circuit, 180- air tank. DETAILED DESCRIPTION
[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0036] The present invention will be further described below in conjunction with the accompanying drawings.
[0037] The embodiment of the present invention provides a bodywork power take-off control system, which can reduce the probability of a power take-off solenoid valve being burned out when the bodywork works for a long time.
[0038] See also Figure 1 The upper body power take-off control system 100 provided in an embodiment of the present invention comprises a transfer case power take-off cylinder 110 and a transfer case shift cylinder 120. The transfer case power take-off cylinder 110 is controlled by air supply of at least two sets of solenoid valve groups arranged in parallel. The solenoid valve groups comprise a first solenoid valve 130 and a second solenoid valve 131. When any first solenoid valve 130 is energized, the transfer case power take-off cylinder 110 can be controlled to be in a power take-off gear position. When any second solenoid valve 131 is energized, the transfer case power take-off cylinder 110 can be controlled to be in a stop power take-off gear position. Each first solenoid valve 130 can be energized alternately.
[0039] Since the transfer case power cylinder 110 is controlled by air supply of at least two groups of solenoid valve groups arranged in parallel, the solenoid valve groups include a first solenoid valve 130 and a second solenoid valve 131. Any first solenoid valve 130 can be energized to control the transfer case power cylinder 110 to be in a power take-off position, and any second solenoid valve 131 can be energized to control the transfer case power cylinder 110 to be in a stop power take-off position. The first solenoid valves 130 can be energized alternately to continuously realize that the transfer case power cylinder 110 is in a power take-off position, thereby shortening the working time of each first solenoid valve 130, thereby reducing the probability of burning out of the power take-off solenoid valve when the upper installation works for a long time.
[0040] The upper load power take-off control system 100 provided in the embodiment of the present invention is further described in detail. Figure 1 , the transfer case shift cylinder 120 is controlled by the third solenoid valve 140 and the fourth solenoid valve 141 to supply air. The transfer case shift cylinder 120 has a position self-locking function. The third solenoid valve 140 can control the transfer case shift cylinder 120 to be in the driving gear position and locked when it is powered on. The fourth solenoid valve 141 can control the transfer case shift cylinder 120 to be in the neutral position and locked when it is powered on. The transfer case shift cylinder 120 has a position self-locking function. The solenoid valve controls the transfer case shift cylinder 120 to be in the driving gear position or the neutral position and then locks. The solenoid valve is disconnected and remains in a power-off state, which can solve the problem that the solenoid valve is prone to burnout due to a long working duration. In this embodiment, the first solenoid valve 130, the third solenoid valve 140 and the fourth solenoid valve 141 are all two-position three-way solenoid valves, and the second solenoid valve 131 is a two-position two-way solenoid valve.
[0041] The upper load power take-off control system 100 provided in the embodiment of the present invention is further described in detail. Figure 1 The transfer case power take-off cylinder 110 is connected to a first indication signal 111, and the transfer case shift cylinder 120 is connected to a second indication signal 121. The first indication signal 111 can indicate that the transfer case power take-off cylinder 110 is in a power take-off gear or a stop power take-off gear, and the second indication signal 121 can indicate that the transfer case shift cylinder 120 is in a driving gear or a neutral gear. By detecting the first indication signal 111 and the second indication signal 121, it is ensured that the states of the transfer case power take-off cylinder 110 and the transfer case shift cylinder 120 meet the requirements, avoiding destructive problems caused by misoperation or when the states do not meet the requirements, and also improving the convenience of power take-off operation.
[0042] Press the remote control engine start button, and when the power take-off switch 150 signal is detected, the first indication signal 111 of the transfer case power take-off cylinder 110 is a power take-off indication signal, and the second indication signal 121 of the transfer case shift cylinder 120 is a neutral indication signal, the remote control indicator light turns green; press the remote control engine start button again, the engine starts, the clutch is disconnected, the gearbox executes the lock specified gear command, the clutch is disconnected, the power take-off indicator light turns on, and the upper load power take-off operation is resumed. After the upper load power take-off operation is remotely shut down, the upper load power take-off operation can be directly resumed by pressing the remote control start button.
[0043] The embodiment of the present invention further provides a method for controlling a load-taking force. Based on the load-taking force control system 100 provided in the above embodiment, the method for controlling a load-taking force includes the following steps:
[0044] S100: Start the engine and turn on the power take-off switch.
[0045] S200: Detect the gear position of the transfer case power take-off cylinder and the transfer case shift cylinder.
[0046] S300: Determine whether the transfer case power take-off cylinder is in the power take-off gear position and whether the transfer case shift cylinder is in the neutral gear position.
[0047] S400: If the transfer case power take-off cylinder is in the power take-off gear and the transfer case shift cylinder is in the neutral position, the clutch is closed and the power take-off indicator light is on; if the transfer case shift cylinder is in the driving gear, the fourth solenoid valve is energized to control the transfer case shift cylinder to the neutral position and lock it; if the transfer case power take-off cylinder is in the stop power take-off gear, the first solenoid valves are alternately energized to control the transfer case power take-off cylinder to the power take-off gear until the power take-off indicator light is on.
[0048] S500: Perform the upper body power taking operation.
[0049] The upper-mounted power take-off control method provided by the embodiment of the present invention further comprises the following steps: each first solenoid valve is energized to work for a first preset time in sequence, and two first solenoid valves are energized to work for a second preset time in sequence when alternating, and the duration of the first preset time is greater than the duration of the second preset time. When the transfer case power take-off cylinder needs to stop taking power, each first solenoid valve loses power, and at the same time, each second solenoid valve is energized and loses power after a third preset time. After turning on the power take-off switch, when it is detected that the transfer case shift cylinder is in the neutral position, the fourth solenoid valve loses power; after turning off the power take-off switch, when it is detected that the transfer case shift cylinder is in the driving gear position, the third solenoid valve loses power.
[0050] In this example, see Figure 1 Two two-position three-way solenoid valves Y1 and Y4 and two two-position two-way solenoid valves Y2 and Y3 are used to supply air to the transfer box power cylinder 110. The two-position three-way solenoid valve Y1 and the two-position two-way solenoid valve Y2 are a group, and the two-position three-way solenoid valve Y4 and the two-position two-way solenoid valve Y3 are a group. The transfer box power cylinder 110 is supplied with air in parallel. When the transfer box power cylinder 110 is in the power take-off gear, the two two-position two-way solenoid valves Y2 and Y3 are in a power-off state, and the two-position three-way solenoid valve Y1 and the two-position three-way solenoid valve Y3 are in a power-off state. The magnetic valve Y4 is energized and works alternately, and the two-position three-way solenoid valve Y1 and the two-position three-way solenoid valve Y4 are energized and work for 120 minutes in sequence, and the two-position three-way solenoid valve Y1 and the two-position three-way solenoid valve Y4 are energized and work for 3 minutes at the same time when alternating; when the transfer case power take-off cylinder 110 is in the stop power take-off gear position, the two-position three-way solenoid valve Y1 and the two-position three-way solenoid valve Y4 are de-energized, and at the same time, the two two-position two-way solenoid valves Y2 and Y3 are energized and de-energized after 10 seconds to ensure that the air pressure of the transfer case power take-off cylinder 110 is released.
[0051] The embodiment of the present invention further provides an engineering device, which includes a top load power take-off control system or a top load power take-off control method provided in any of the above embodiments. The specific structure of the top load power take-off control system or the top load power take-off control method refers to the above embodiments. Since the engineering device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0053] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.
Claims
1. A power take-off control system for a top load, characterized in that: The upper body power take-off control system includes a transfer case power take-off cylinder and a transfer case shift cylinder. The transfer case power take-off cylinder is controlled by air supply of at least two sets of solenoid valve groups arranged in parallel. The solenoid valve groups include a first solenoid valve and a second solenoid valve. Any of the first solenoid valves can be energized to control the transfer case power take-off cylinder to be in a power take-off gear position. Any of the second solenoid valves can be energized to control the transfer case power take-off cylinder to be in a stop power take-off gear position. Each of the first solenoid valves can be energized alternately.
2. The upper load power take-off control system according to claim 1, characterized in that: The transfer case shift cylinder is controlled by the third solenoid valve and the fourth solenoid valve for air supply. The transfer case shift cylinder has a position self-locking function. When the third solenoid valve is energized, it can control the transfer case shift cylinder to be in the driving gear position and lock it. When the fourth solenoid valve is energized, it can control the transfer case shift cylinder to be in the neutral position and lock it.
3. The upper load power take-off control system according to claim 2, characterized in that: The first solenoid valve, the third solenoid valve and the fourth solenoid valve are all two-position three-way solenoid valves, and the second solenoid valve is a two-position two-way solenoid valve.
4. The upper load power take-off control system according to claim 1, characterized in that: The transfer case power take-off cylinder is connected to a first indication signal, and the transfer case shift cylinder is connected to a second indication signal. The first indication signal can indicate that the transfer case power take-off cylinder is in a power take-off gear or a stop power take-off gear, and the second indication signal can indicate that the transfer case shift cylinder is in a driving gear or a neutral gear.
5. A method for controlling a bodywork power take-off, based on the bodywork power take-off control system according to any one of claims 1 to 4, characterized in that: The upper load power take-off control method comprises the steps of: Start the engine and turn on the power take-off switch; Detect the gear position of the transfer case power take-off cylinder and the transfer case shift cylinder; Determining whether the transfer case power take-off cylinder is in a power take-off gear position and whether the transfer case shift cylinder is in a neutral gear position; If the transfer case power take-off cylinder is in the power take-off gear and the transfer case shift cylinder is in the neutral gear, the clutch is closed and the power take-off indicator light is on; if the transfer case shift cylinder is in the driving gear, the fourth solenoid valve is energized to control the transfer case shift cylinder to be in the neutral gear and locked; if the transfer case power take-off cylinder is in the stop power take-off gear, each first solenoid valve is alternately energized to control the transfer case power take-off cylinder to be in the power take-off gear until the power take-off indicator light is on; Perform upper load power take-off operation.
6. The upper load force taking control method according to claim 5, characterized in that: Each of the first solenoid valves is powered on and works for a first preset time in sequence, and two of the first solenoid valves are powered on and works for a second preset time in sequence when they are alternating, and the duration of the first preset time is longer than the duration of the second preset time.
7. The upper load force taking control method according to claim 5, characterized in that: When the transfer case power take-off cylinder needs to stop taking power, each first solenoid valve loses power, and at the same time each second solenoid valve is energized and loses power after a third preset time.
8. The upper load force taking control method according to claim 5, characterized in that: After the power take-off switch is turned on, when it is detected that the transfer case shift cylinder is in the neutral position, the fourth solenoid valve loses power; after the power take-off switch is turned off, when it is detected that the transfer case shift cylinder is in the driving gear position, the third solenoid valve loses power.
9. An engineering equipment, characterized in that: The engineering equipment includes the bodywork power take-off control system as described in any one of claims 1 to 4.
10. An engineering equipment, characterized in that: The engineering equipment includes the upper load force taking control method as described in any one of claims 5 to 8.