CN111660439A - Motor control device for concrete mixer truck - Google Patents
Motor control device for concrete mixer truck Download PDFInfo
- Publication number
- CN111660439A CN111660439A CN202010548881.6A CN202010548881A CN111660439A CN 111660439 A CN111660439 A CN 111660439A CN 202010548881 A CN202010548881 A CN 202010548881A CN 111660439 A CN111660439 A CN 111660439A
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- Prior art keywords
- spring
- valve
- sleeve
- section
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
- B28C5/421—Drives
- B28C5/4213—Hydraulic drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0668—Sliding valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a motor control device for a concrete mixer truck, which comprises: a valve housing; a valve core; a valve body; a threaded sleeve; a first spring; a coil; an armature; a second spring. The motor control device of the concrete mixer truck has a cut-off function and a protection function.
Description
Technical Field
The invention belongs to the technical field of concrete mixer trucks, and particularly relates to a motor control device of a concrete mixer truck.
Background
In current construction, in order to reduce the amount of building materials stored at a construction site, a large amount of building materials need to be placed at a place far from the construction site. The concrete mixer truck can realize the mixing operation of building materials in the transportation process, so the concrete mixer truck is more and more widely used. When a mixer truck performs a mixing operation, a hydraulic motor is generally used to drive a mixing tank to rotate, and a protection mechanism is generally provided in a hydraulic oil path in order to limit the maximum operating pressure of the hydraulic motor. The existing protection mechanism performs overflow shunting when the pressure of the inlet of the hydraulic motor exceeds the limited pressure of the hydraulic motor, thereby playing a role of safety protection; although the existing protection mechanism can limit the maximum working pressure of the hydraulic motor, the hydraulic motor drives the stirring tank to have larger starting torque in a static state, and when the hydraulic motor is started, the flow of the inlet of the hydraulic motor is also shunted, so that the starting speed is too slow, and the working efficiency is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, it is an object of the invention to provide a motor control device for a concrete mixer truck with a shut-off function and a protection function.
According to the embodiment of the invention, the motor control device for the concrete mixer comprises:
the valve comprises a valve sleeve, a valve body and a valve seat, wherein a first oil port is formed in the side wall of the valve sleeve, and a second oil port is formed in the bottom of the valve sleeve;
the valve core is arranged in the valve sleeve in a manner of moving up and down;
the lower end of the valve body is connected with the valve sleeve;
the thread insert is arranged in the valve body to seal the upper end of the valve body and comprises a main body section and a reducing section positioned below the main body section, the lower end of the reducing section downwards penetrates through the valve core, a thread insert through hole which is communicated up and down is formed in the thread insert, the thread insert through hole comprises a thread insert upper through hole section positioned in the main body section and a thread insert lower through hole section positioned in the reducing section, the hole diameter of the thread insert upper through hole section is larger than that of the thread insert lower through hole section, and a communication hole which is communicated with the thread insert upper through hole section and the lower surface of the main body section is formed in the main body section;
the first spring is sleeved on the reducing section, the lower end of the first spring abuts against the upper end of the valve core, the upper end of the first spring abuts against the threaded sleeve, and the first spring normally pushes the lower end of the valve core downwards to extend into the second oil port so as to disconnect the first oil port from the second oil port;
the coil is arranged at the upper end of the threaded sleeve, and a magnetic conduction pipe coaxial with the threaded sleeve is arranged in the coil;
the armature is arranged in the magnetic conduction pipe in a vertically movable mode, and an extension rod of the armature is matched in the through hole section on the threaded sleeve;
the second spring is sleeved on the extension rod, the lower end of the second spring abuts against the threaded sleeve, the upper end of the second spring abuts against the armature, when the coil is electrified, the armature overcomes the elastic force of the second spring to move downwards so that the extension rod closes the communication hole, and when the coil is not electrified, the second spring pushes the armature upwards so that the extension rod opens the communication hole.
Advantageously, the motor control device for a concrete mixer truck further comprises an adjusting assembly, wherein the adjusting assembly is arranged in the valve body and used for adjusting the set pressure of the first spring.
Advantageously, the adjustment assembly comprises:
the adjusting sleeve is sleeved on the reducing section, the section of the adjusting sleeve is in an inverted T shape, the outer peripheral wall of a horizontal limb of the adjusting sleeve is in threaded connection with the inner peripheral wall of the valve body, an adjusting sleeve through hole which is communicated up and down is formed in the horizontal limb of the adjusting sleeve, and the upper end of the first spring abuts against the lower end face of the horizontal limb of the adjusting sleeve;
the turbine is sleeved on the vertical limb of the adjusting sleeve and fixedly connected with the vertical limb of the adjusting sleeve, a step surface is arranged on the inner peripheral wall of the valve body, the lower end surface of the turbine abuts against the step surface, and a turbine through hole which is communicated up and down is formed in the turbine;
the worm is arranged on the valve body and meshed with the turbine;
the positioning ring is sleeved on the vertical limb of the adjusting sleeve, and the upper end of the positioning ring is abutted against the main body segment and the lower end of the positioning ring is abutted against the turbine.
Advantageously, the motor control device for the concrete mixer truck further comprises a spring seat, and the spring seat is arranged between the valve core and the lower end of the first spring.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a motor control apparatus for a concrete mixer vehicle according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line C-C of FIG. 1;
fig. 3 is a schematic diagram of a motor control apparatus for a concrete mixer truck according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A motor control apparatus for a concrete mixer truck according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a motor control apparatus for a concrete mixer truck according to an embodiment of the present invention includes: the valve comprises a valve sleeve 1, a valve core 2, a valve body 4, a threaded sleeve 3, a first spring 13, a coil 7, an armature 6 and a second spring 5.
Specifically, the side wall of the valve housing 1 has a first oil port a and the bottom of the valve housing 1 has a second oil port B. It will be appreciated that, in use, the first port a communicates with the hydraulic motor inlet and the second port B communicates with the oil tank.
The valve core 2 is arranged in the valve sleeve 1 in a way that the valve core can move up and down.
The lower end of the valve body 4 is connected to the valve housing 1.
The threaded sleeve 3 is arranged in the valve body 4 to close the upper end of the valve body 4. The thread insert 3 comprises a main body section and a reducing section located below the main body section, the lower end of the reducing section downwards penetrates through the valve core 2, a thread insert through hole which is communicated up and down is formed in the thread insert 3, the thread insert through hole comprises a thread insert upper through hole section 3c located in the main body section and a thread insert lower through hole section 3a located in the reducing section, the aperture of the thread insert upper through hole section 3c is larger than that of the thread insert lower through hole section 3a, and a communication hole 3b which is communicated with the thread insert upper through hole section 3c and the lower surface of the main body section is formed in the main body section.
The first spring 13 is sleeved on the reducing section, the lower end of the first spring 13 abuts against the upper end of the valve core 2, the upper end of the first spring 13 abuts against the threaded sleeve 3, and the first spring 13 normally pushes the lower end of the valve core 2 downwards to extend into the second oil port B so as to disconnect the first oil port A from the second oil port B. Advantageously, the motor control device for a concrete mixer truck further comprises a spring seat 14, and the spring seat 14 is arranged between the valve core 2 and the lower end of the first spring 13.
The coil 7 is arranged at the upper end of the threaded sleeve 3, and a magnetic conduction pipe 7a which is coaxial with the threaded sleeve 3 is arranged in the coil 7.
The armature 6 is arranged in the magnetic conduction pipe 7a in a way of moving up and down, and the extension rod 6a of the armature 6 is matched in the through hole section 3c on the screw sleeve.
The second spring 5 is sleeved on the extension rod 6a, the lower end of the second spring 5 abuts against the threaded sleeve 3, the upper end of the second spring 5 abuts against the armature 6, when the coil 7 is electrified, the armature 6 overcomes the elastic force of the second spring 5 to move downwards so that the extension rod 6a closes the communication hole 3b, and when the coil 7 is not electrified, the second spring 5 pushes the armature 6 upwards so that the extension rod 6a opens the communication hole 3 b.
Advantageously, the motor control device for concrete mixer vehicles further comprises an adjustment assembly provided in the valve body 4 for adjusting the set pressure of the first spring 13.
The cut-off function: when the coil 7 is electrified, as shown in fig. 3, the armature 6 overcomes the elastic force of the second spring 5 to be at the lower end position, and drives the extension bar 6a to be at the lower end position, at this time, the extension bar 6a seals the communication hole 3B, so that the hydraulic oil in the chamber where the first spring 13 is located is in a closed state, so that the valve core 2 cannot move upwards under the upward acting force of the pressurized oil, the valve port cannot be opened and kept to be closed, the first oil port a and the second oil port B are always closed and not communicated, the oil at the outlet of the hydraulic pump can completely enter the hydraulic motor, and the flow at the inlet of the hydraulic motor cannot be shunted, so that the hydraulic motor can be quickly started, and the stirring tank can be.
And (4) protection function: when the coil 7 loses power, as shown in fig. 1, the armature 6 drives the extension rod 6a to move upwards under the action of the second spring 5, the communication hole 3B is opened, when the pressure of the first oil port a is greater than the set pressure of the first spring 13, the pressure oil of the first oil port a pushes the valve core 2 to move upwards, the hydraulic oil in the chamber where the first spring 13 is located flows into the second oil port B through the communication hole 3B, the through hole section 3c on the screw sleeve and the through hole section 3a under the screw sleeve, the valve core 2 moves upwards, the valve port is opened, the oil of the first oil port a enters the second oil port B, the pressure at the inlet of the hydraulic motor is prevented from continuously rising, and the protection function of the hydraulic motor is achieved.
Advantageously, the adjustment assembly comprises: adjusting sleeve 10, worm wheel 9, worm 12, holding ring 8.
The adjusting sleeve 10 is sleeved on the reducing section, the section of the adjusting sleeve 10 is constructed into an inverted T shape, the outer peripheral wall of the horizontal limb of the adjusting sleeve 10 is in threaded connection with the inner peripheral wall of the valve body 4, an adjusting sleeve through hole 10a which is through up and down is formed in the horizontal limb of the adjusting sleeve 10, and the upper end of the first spring 13 abuts against the lower end face of the horizontal limb of the adjusting sleeve 10.
The turbine 9 is sleeved on the vertical limb of the adjusting sleeve 10 and fixedly connected with the vertical limb of the adjusting sleeve 10, the inner peripheral wall of the valve body 4 is provided with a step surface, the lower end surface of the turbine 9 abuts against the step surface, and the turbine 9 is provided with a turbine through hole 9a which is through up and down. Advantageously, the turbine 9 is fixedly connected to the vertical limb of the adjustment sleeve 10 by means of a flat key 11.
The worm 12 is arranged on the valve body 4 and is meshed with the worm wheel 9.
The positioning ring 8 is fitted over the vertical limb of the adjustment sleeve 10, the upper end of the positioning ring 8 abutting the main body segment and the lower end of the positioning ring 8 abutting the turbine 9.
Therefore, the set pressure of the first spring 13 can be conveniently adjusted by rotating the worm 12. For example, by rotating the worm 12 to move the adjustment sleeve 10 downward, the first spring 13 is compressed by an increased amount, and the set pressure is increased. Conversely, by rotating the worm 12 to move the adjustment sleeve 10 upward, the first spring 13 is compressed by a reduced amount, and the set pressure is reduced.
The motor control device for the concrete mixer truck has the following beneficial effects:
1. the invention has the stopping function and the protection function, when the hydraulic motor is started, the coil is electrified, the invention has the stopping function, the invention can not shunt the flow of the inlet of the hydraulic motor, and the hydraulic motor can be quickly started to drive the stirring tank to rotate; when the hydraulic motor is operated and needs to play a role of protection, the coil of the invention can play a role of a safety valve when the coil is powered off;
2. the invention has the advantages of high integration, compact volume, simple structure and low manufacturing cost.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A motor control device for a concrete mixer truck, comprising:
the valve comprises a valve sleeve, a valve body and a valve seat, wherein a first oil port is formed in the side wall of the valve sleeve, and a second oil port is formed in the bottom of the valve sleeve;
the valve core is arranged in the valve sleeve in a manner of moving up and down;
the lower end of the valve body is connected with the valve sleeve;
the thread insert is arranged in the valve body to seal the upper end of the valve body and comprises a main body section and a reducing section positioned below the main body section, the lower end of the reducing section downwards penetrates through the valve core, a thread insert through hole which is communicated up and down is formed in the thread insert, the thread insert through hole comprises a thread insert upper through hole section positioned in the main body section and a thread insert lower through hole section positioned in the reducing section, the hole diameter of the thread insert upper through hole section is larger than that of the thread insert lower through hole section, and a communication hole which is communicated with the thread insert upper through hole section and the lower surface of the main body section is formed in the main body section;
the first spring is sleeved on the reducing section, the lower end of the first spring abuts against the upper end of the valve core, the upper end of the first spring abuts against the threaded sleeve, and the first spring normally pushes the lower end of the valve core downwards to extend into the second oil port so as to disconnect the first oil port from the second oil port;
the coil is arranged at the upper end of the threaded sleeve, and a magnetic conduction pipe coaxial with the threaded sleeve is arranged in the coil;
the armature is arranged in the magnetic conduction pipe in a vertically movable mode, and an extension rod of the armature is matched in the through hole section on the threaded sleeve;
the second spring is sleeved on the extension rod, the lower end of the second spring abuts against the threaded sleeve, the upper end of the second spring abuts against the armature, when the coil is electrified, the armature overcomes the elastic force of the second spring to move downwards so that the extension rod closes the communication hole, and when the coil is not electrified, the second spring pushes the armature upwards so that the extension rod opens the communication hole.
2. The concrete mixer truck motor control apparatus of claim 1, further comprising an adjustment assembly disposed within the valve body for adjusting the set pressure of the first spring.
3. The concrete mixer truck motor control apparatus of claim 2, wherein the adjustment assembly comprises:
the adjusting sleeve is sleeved on the reducing section, the section of the adjusting sleeve is in an inverted T shape, the outer peripheral wall of a horizontal limb of the adjusting sleeve is in threaded connection with the inner peripheral wall of the valve body, an adjusting sleeve through hole which is communicated up and down is formed in the horizontal limb of the adjusting sleeve, and the upper end of the first spring abuts against the lower end face of the horizontal limb of the adjusting sleeve;
the turbine is sleeved on the vertical limb of the adjusting sleeve and fixedly connected with the vertical limb of the adjusting sleeve, a step surface is arranged on the inner peripheral wall of the valve body, the lower end surface of the turbine abuts against the step surface, and a turbine through hole which is communicated up and down is formed in the turbine;
the worm is arranged on the valve body and meshed with the turbine;
the positioning ring is sleeved on the vertical limb of the adjusting sleeve, and the upper end of the positioning ring is abutted against the main body segment and the lower end of the positioning ring is abutted against the turbine.
4. The concrete mixer truck motor control device of claim 3, wherein the turbine is fixedly connected to the vertical limb of the adjusting sleeve by a flat key.
5. The concrete mixer truck motor control apparatus according to any one of claims 1 to 4, further comprising a spring seat provided between the spool and a lower end of the first spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548881.6A CN111660439B (en) | 2020-06-16 | 2020-06-16 | Motor control device for concrete mixer truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548881.6A CN111660439B (en) | 2020-06-16 | 2020-06-16 | Motor control device for concrete mixer truck |
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| Publication Number | Publication Date |
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| CN111660439A true CN111660439A (en) | 2020-09-15 |
| CN111660439B CN111660439B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010548881.6A Active CN111660439B (en) | 2020-06-16 | 2020-06-16 | Motor control device for concrete mixer truck |
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