WO2013082971A1

WO2013082971A1 - Spiral material distribution system, control device and control method therefor and engineering mechanical device

Info

Publication number: WO2013082971A1
Application number: PCT/CN2012/082184
Authority: WO
Inventors: 许辉; 刘兵华; 黄国勇; 许少铭; 罗海斌
Original assignee: 中联重科股份有限公司; 湖南中联重科专用车有限责任公司
Priority date: 2011-12-08
Filing date: 2012-09-27
Publication date: 2013-06-13
Also published as: CN102493319A; CN102493319B

Abstract

A spiral material distribution system comprises a spiral drive apparatus (1), a material distribution screw rod (2), a spreading groove (3) and a control device. The material distribution screw rod (2) is positioned in the spreading groove (3) and is driven by the spiral drive apparatus (1) to rotate. The control device comprises a receiving apparatus (10) and a controller (20). The controller (20) is connected to the receiving apparatus (10) and the spiral drive apparatus (1), and compares a detected material level value with a preset material level value, so as to control running of the spiral drive apparatus (1). Also provided are a method for controlling the spiral material distribution system and an engineering mechanical device configured with the spiral material distribution system. According to different material level situations, the control device controls, in different manners, the spiral drive apparatus (1) to work, so that a material is spread evenly.

Description

Spiral cloth system, control device and control method thereof, and engineering machinery equipment

The present invention relates to the field of construction machinery, and in particular to a spiral cloth system, a control device, a method, and an engineering machine. Background technique

Figure 1 is a schematic view of the structure of a spiral cloth system. As shown in Fig. 1, the system comprises a screw driving device 1, a cloth auger 2 and a paving groove 3, the cloth auger 2 is located in the paving groove 3, and is driven by the screw 1 The device 1 can include a hydraulic motor and a reducer to drive the rotation. Note that this figure only shows the structure of a spiral cloth system located on the left side of the paver. The right spiral fabric system is roughly the same. The rotation of the cloth apron 2 is driven by the screw driving device 1, and the material conveyed by the blade to the system can be conveyed to the paving width by a screw joint, that is, the material is transported to both ends of the paving groove, so that the material uniformly covers the booth. Paving, and falling from the paving to the ground to achieve uniform paving.

At present, the control of the auger system is mainly used for detecting the end of the paving groove (for the spiral cloth system on the left side of the paver, the end is the left end of the paving trough; In the case of the spiral cloth system on the right side of the paving machine, the end portion is the right end of the paving groove. The material level detecting device of the material level is realized. When the end material level is high, the cloth screw is controlled to rotate at a low speed or stop rotating. To prevent material from accumulating at the end; when the end level is low, control the cloth auger to rotate quickly to replenish the material.

However, in the actual construction process, for various reasons, there are often too many materials at the end of the paving tank instead of too few end materials. In this case, the level detecting device can only detect the level of the end material, and the system cannot control the non-end material too little. At this time, it can only be fed by manual operation. Therefore, there is a need for a material that can be evenly distributed throughout the paving trough. And a spiral cloth system that enables automatic control of the system < SUMMARY

It is an object of the present invention to provide a spiral cloth system, control apparatus, method and engineering machine apparatus. It allows the material to be evenly distributed throughout the paving tank and allows the system to be automatically controlled.

In order to achieve the above object, the present invention provides a control apparatus for a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, the cloth auger is located in the paving groove, and the spiral is The driving device drives the rotation, the device includes: a receiving device, configured to receive a material level of one end portion of the left end portion and the right side end portion of the paving groove, and between the end portion and the middle portion of the paving groove a material level at a non-end position; and a controller coupled to the receiving device and the screw driving device for comparing the material level of the end portion with a preset value of the end material level, The level at the end position is compared to a preset value of the non-end level, and the screw drive is controlled based on the comparison.

Correspondingly, the present invention also provides a method for controlling a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, wherein the cloth auger is located in the paving groove, and the screw driving device is Driving rotation, the method comprising: receiving a material level of one end portion of the left end portion and the right side end portion of the paving groove and a non-end portion between the end portion and the middle portion of the paving groove a material level; and comparing the material level of the end portion with a preset value of the end material level, comparing the material level at the non-end portion position with a preset value of the non-end material level, and according to the comparison result Controlling the screw drive.

Accordingly, the present invention also provides a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, the cloth auger is located in the paving groove, and is driven to rotate by the screw driving device, The system further includes: the above-mentioned control device; and a material level detecting device connected to the receiving device for detecting a material level of the one end portion of the left end portion and the right end portion of the paving groove and the end portion a level at a non-end position between the portion and the middle of the paving trough.

Accordingly, the present invention also provides an engineering machine apparatus including the above-described auger system. According to the above technical solution, the level of the one end portion of the left end portion and the right end portion of the paving groove can be detected, and the non-end portion between the end portion and the middle portion of the paving groove can be combined. The material level, in the case of the material position at the one end portion and the non-end portion of the left end portion and the right side end portion of the paving groove, the spiral driving device is controlled to work in a different manner, so that the paving can be performed. The materials in each part of the tank are replenished for automatic control.

Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are in the In the drawing:

Figure 1 is a schematic view showing the structure of a spiral cloth system;

2 is a schematic structural view of a control device of a spiral cloth system provided by the present invention

3 is a control flow chart of a control device for a spiral cloth system provided by the present invention; and FIG. 4 is a schematic structural view of a spiral cloth system provided by the present invention. Description of the reference numerals

1 screw drive 2 cloth auger

3 paving trough 10 receiving device

20 Controller 30 Level detection assembly Detailed implementation

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 2 is a schematic structural view of a control device of a spiral cloth system provided by the present invention. As shown in FIG. 2, the present invention provides a control device for a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, wherein the cloth auger is located in the paving groove, and The screw driving device drives the rotation, and the device comprises: a receiving device 10, configured to receive a material level of one end portion of the left end portion and the right side end portion of the paving groove, and the end portion and the middle portion of the paving groove a level between a non-end position (which may include the middle of the paving groove); and a controller 20 coupled to the receiving device 10 and the screw drive for leveling the end and the end The material level preset value is compared, the material level at the non-end position is compared with the non-end material level preset value, and the screw driving device is controlled according to the comparison result. Thereby, the operation of the screw driving device can be controlled in different ways for the material position of the non-end portion and the end portion of the paving groove, and the material of the non-end portion of the paving groove can be supplemented to realize automatic control.

It should be noted that the paver generally has two independent spiral cloth systems on the left and right sides thereof, and the two independent spiral cloth systems share a paving groove, and the left side and the right side of the paving groove are respectively used. When the auger system is used as a spiral cloth system on the left side of the paver, the material level of the end is the level of the left end of the paving groove; when the auger system is used as a paver In the case of the spiral cloth system on the right side, the material level of the end portion is the level of the right end of the paving groove.

3 is a control flow chart of a control device for a spiral cloth system provided by the present invention. As shown in FIG. 3, preferably, when the material level at the end portion is greater than or equal to the end material level preset value and the material level at the non-end portion position is smaller than the non-end material level preset value (ie, the end is not short of material, the end is short), the screw drive is controlled to work in an intermittent manner, that is, to control the rotation of the cloth auger, then pause, then rotate, then pause, and the like. This avoids excessive packing of the end material when replenishing the non-end material.

Preferably, the controller 20 controls the rotational speed of the cloth auger to rotate at 40-70 rpm when the screw drive is controlled to operate in an intermittent manner. Thereby, the segregation phenomenon (that is, the separation of the aggregate and the powder) caused by the rapid rotation of the spiral blade can be avoided, and the load is prevented during the startup of the screw drive device due to the limitation of the rotation speed. It is difficult to start too much.

The controller 20 is further configured to: when the material level of the end portion is less than the preset value of the end material level and the material level at the non-end position is less than the preset value of the non-end material level (ie, both the end and the end are missing), controlling the cloth auger to rotate in a higher speed range (for example, 80-130 rpm), the speed is v _h = v _hmix + wide ~ ^Ld * (V _hmax - v _hm or h = _hm ^ ^Ld ^ ~ ^Lddle Hv _hmax -v _hm ; the material level at the end is less than the preset value of the end material level and the material level at the non-end position is greater than or When the non-end material level is equal to the preset value (ie, the end is short and the end is not short), the cloth auger is controlled to rotate within a medium speed range (for example,

40-79 revolutions / minute), the speed is _{_{^{v m = v mma + l _}}} d * (v mmax -v mmix); and at the end of the filling level is greater than or equal to the filling level of the predetermined value and the end portion When the material level at the non-end position is greater than or equal to the preset value of the non-end material level (ie, the end portion and the non-end portion are not short), the cloth auger is controlled to be in a lower rotation speed range ( For example, 0-39 rpm, the rotation is v _t = v _lma + ~ ^Lddle * (V _lmax - V _lma ). v _3⁄4m „ and v _3⁄4 _; _ respectively for the minimum speed and maximum speed of the higher speed range, v _mmi ^Pv _m respectively the minimum and maximum speeds of the medium speed range, V _3⁄4 „ and respectively The minimum speed and the maximum speed of the higher speed range are the level of the end, which is the preset value of the end level, / _m ^ _fe is the level at the non-end position, _ is The non-end material level preset value.

In this way, stepless proportional control can be realized. For example, in the case where the end is short and the end is not short, when the end is very short, the cloth can be controlled at a large speed in the medium speed range. When the auger rotates, when the end is short, the rotation of the cloth auger can be controlled at a small speed in the medium speed range, thereby achieving stepless proportion feeding, so that the material of the paving end is quickly replenished.

The control strategy given above is to control the cloth auger at different speed ranges according to different working conditions. In the inner rotation, the invention can also control the rotation of the cloth auger at different rotation speeds according to different working conditions. Specifically, when the material level of the end portion is less than the preset value of the end material level and the material level at the non-end position is less than the preset value of the non-end material level, the cloth auger is controlled. At higher speeds

(eg, 100 rpm) rotation; the level at the end is less than the end level preset and the level at the non-end position is greater than or equal to the non-end level preset Controlling the cloth auger to rotate at a medium rotation speed (for example, 60 rpm); and the material at the end portion is greater than or equal to the end material level preset value and the non-end position When the bit is greater than or equal to the non-end material level preset value, the cloth auger is controlled to rotate or stop rotating at a lower rotation speed (for example, 20 revolutions/minute).

It should be noted that the preset value of the non-end material level and the preset value of the end material level can be set according to actual material level requirements, and the present invention is not limited to the specific value thereof, and the non-end material level is pre-predetermined. The set value can be the same as the preset value of the end material level, or it can be different.

Correspondingly, the present invention also provides a method for controlling a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, wherein the cloth auger is located in the paving groove and driven by the screw The device drives the rotation, the method comprising: receiving a material level of one end portion of the left end portion and the right side end portion of the paving groove and a non-end portion between the end portion and the middle portion of the paving groove And comparing the material level of the end portion with the preset value of the end material level, comparing the material level at the non-end position with the preset value of the non-end material level, and comparing according to As a result, the screw drive is controlled.

Wherein, when the material level of the end portion is greater than or equal to the preset value of the end material level and the material level at the non-end position is smaller than the preset value of the non-end material level, the spiral driving device is controlled to be interrupted. Way to work.

Wherein, the method further comprises: controlling, when the material level of the end portion is less than a preset value of the end material level and the material level at the non-end position is less than the preset value of the non-end material level The cloth auger rotates at a higher speed range, with a speed of V _h = V _hmix + ^{L d} ~ ^Ld * (V _hmax - V _hm or edesired v _h =v _{hma +} - _d -ι n , . The material level at the end is less than the end material level preset value and the material level at the non-end position is greater than or equal to the non-end material level When the preset value is controlled, the cloth auger is controlled to rotate in a medium speed range, and the rotation speed is

VU — H −v _mm ; and the material level at the end is greater than or equal to the end material level preset value and the material level at the non-end position is greater than or equal to the non-end material level preset value And controlling the cloth auger to rotate in a lower speed range, the speed is v _t = v _lma + ^Lde J ^d ~ ^Lddle * (V _lmax - V _lma ), wherein v _3⁄4m „ and v _3⁄4 _; _ are respectively The minimum and maximum speeds of the higher speed range, v _mmi ^Pv _m are the minimum and maximum speeds of the medium speed range, respectively, ν _3⁄4 „ and the minimum and maximum speeds of the higher speed range, respectively , l _end is the material level of the end portion, _SiW is the preset value of the end material level, / _m; is the material level at the non-end position, and I is the non-end material level pre- Set the value.

Wherein, the method may further include: when the material level of the end portion is less than the preset value of the end material level and the material level at the non-end position is less than the preset value of the non-end material level, the control station The cloth auger rotates at a higher rotation speed; the material level at the end is smaller than the end material preset value and the material level at the non-end position is greater than or equal to the non-end material level preset value Controlling the cloth auger to rotate at a medium speed; and the material level at the end is greater than or equal to the end level preset value and the material level at the non-end position is greater than or equal to the non-end When the material level is preset, the cloth auger is controlled to rotate or stop rotating at a lower speed.

Correspondingly, FIG. 4 is a schematic structural view of a spiral cloth system provided by the present invention. As shown in FIG. 4, the present invention further provides a spiral cloth system, which comprises a screw driving device, a cloth auger and a paving groove, a cloth auger is located in the paving groove and is driven to rotate by the screw driving device, the system further comprising: the above-mentioned control device; a material level detecting device 30 connected to the receiving device 10 for detecting the booth a material level at one end portion of the left end portion and the right side end portion of the groove and a material level at a non-end portion between the end portion and the middle portion of the paving groove. The level check The detecting device 30 can be a detecting device capable of simultaneously detecting the material level at one end portion and the non-end portion of the left end portion and the right end portion of the paving groove, or separately detecting the two A detection device for the material level at the one end portion and the non-end portion of the left end portion and the right end portion of the paving groove.

Accordingly, the present invention also provides an engineering machine apparatus comprising the above-described spiral cloth system.

For specific details and benefits of the control method of the auger system, the auger system, and the construction machinery provided by the present invention, please refer to the previous description of the control device for the auger system, and details are not described herein.

Through the above technical solution of the invention, the automatic control of the spiral cloth system for all working conditions can be realized, and the segregation phenomenon caused by the high-speed rotation of the spiral blade can be avoided, and the material can be uniformly distributed in the entire paving groove.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations.

In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and should also be regarded as the disclosure of the invention.

Claims

Rights request

A control device for a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, wherein the cloth auger is located in the paving groove and driven to rotate by the screw driving device, wherein the feature In that, the device includes:

a receiving device, configured to receive a material level of one end portion of the left end portion and the right end portion of the paving groove and a material level at a non-end portion between the end portion and the middle portion of the paving groove ; as well as

a controller, connected to the receiving device and the screw driving device, for comparing the material level of the end portion with the preset value of the end material level, and the material level and the non-end portion at the non-end portion position The fill level preset values are compared, and the screw drive is controlled based on the comparison result.

2. The apparatus according to claim 1, wherein the controller is further configured to: at the end, the material level is greater than or equal to the end material level preset value and the non-end position When the bit is smaller than the preset value of the non-end material level, the screw driving device is controlled to operate in an intermittent manner.

The device according to claim 1 or 2, wherein the controller is further configured to: at a position where the material level of the end portion is smaller than an end material level preset value and the non-end position When the material level is less than the preset value of the non-end material level, controlling the cloth auger to rotate in a higher rotation speed range,

^^ ^ T τ _|_ * /τ ― τ \ pi/ τ τ , I * /τ ― τ \ .

Jj, controlling the cloth auger when the material level of the end portion is less than the preset value of the end material level and the material level at the non-end position is greater than or equal to the preset value of the non-end material level Rotate in the medium speed range, the speed and speed are -V .);

Controlling the cloth apron when the material level of the end portion is greater than or equal to the end material level preset value and the material level at the non-end portion position is greater than or equal to the non-end material level preset value At lower speeds The range of the rotation speed of ^m f * n), _where, v _¾m; Pv _¾ respectively the higher speed range of the minimum speed and maximum speed, v _mm "and v is the minimum speed of the medium speed range and The maximum rotational speeds, v _lma and v _lm are respectively the minimum rotational speed and the maximum rotational speed of the higher rotational speed range, which are the level of the end, l _edesired is the preset value of the end material level, / _Μ is the The material level at the non-end position, /^^ is the preset value of the non-end material level.

The device according to claim 1 or 2, wherein the controller is further configured to: at the end, the material level is smaller than the end material level preset value and the non-end position When the material level is less than the preset value of the non-end material level, controlling the cloth auger to rotate at a higher rotation speed;

Controlling the cloth apron to be medium when the material level of the end portion is less than the end material level preset value and the material level at the non-end position is greater than or equal to the non-end material level preset value Rotational speed; and

Controlling the cloth apron when the material level of the end portion is greater than or equal to the end material level preset value and the material level at the non-end portion position is greater than or equal to the non-end material level preset value Rotate or stop at a lower speed.

5. A method for controlling a spiral cloth system, the system comprising a screw driving device, a cloth auger and a paving groove, wherein the cloth auger is located in the paving groove, and is driven to rotate by the screw driving device, and characterized In that, the method includes:

Receiving a material level of one end portion of the left end portion and the right side end portion of the paving groove and a material level at a non-end portion between the end portion and the middle portion of the paving groove;

Comparing the material level of the end portion with the preset value of the end material level, comparing the material level at the non-end portion position with a preset value of the non-end material level, and controlling the Screw drive Straight.

6. The method according to claim 5, wherein the material level at the end portion is greater than or equal to the end material level preset value and the material level at the non-end portion position is smaller than the non-end material level At the preset value, the screw drive is controlled to operate in an intermittent manner.

The method according to claim 5 or 6, wherein the method further comprises: the material level at the end is less than a preset value of the end material level and the material level at the non-end position is less than Controlling the cloth auger to rotate in a higher speed range when the non-end material level is preset

^^ ^ T τ _|_ * /τ ― τ pi τ τ + I * /τ ― τ .

Jj ^ , controlling the cloth spiral when the material level of the end portion is less than the end material level preset value and the material level at the non-end position is greater than or equal to the non-end material level preset value The rod rotates in the medium speed range, and the speed and speed are -v and

Controlling the cloth apron when the material level of the end portion is greater than or equal to the end material level preset value and the material level at the non-end portion position is greater than or equal to the non-end material level preset value in the low speed range of the rotation speed of _{^{^{^{VV lmix + Lde J d ~ Lddle}}}} * (V lmax - V lmix), _wherein, v _¾m; Pv _¾ respectively the minimum speed and maximum speed of the higher speed range, v _Mm „ and v are the minimum and maximum speeds of the medium speed range, respectively, v _lma and v _lm are the minimum and maximum speeds of the higher speed range, respectively, for the level of the end, l _edesired The end material level preset value, / _Μ is the material level at the non-end position, and /^^ is the non-end material level preset value.

The method according to claim 5 or 6, wherein the method further comprises: Controlling the cloth apron at a higher speed when the material level of the end portion is less than the preset value of the end material level and the material level at the non-end position is less than the preset value of the non-end material level Rotate

9. A spiral cloth system, comprising: a screw driving device, a cloth auger, and a paving groove, wherein the cloth auger is located in the paving groove and driven to rotate by the screw driving device, wherein The system also includes:

A control device according to any one of claims 1 to 4;

a material level detecting device connected to the receiving device for detecting a material level of one end portion of the left end portion and the right side end portion of the paving groove and between the end portion and the middle portion of the paving groove A level at a non-end position.

10. An engineering machine apparatus, characterized in that it comprises a system according to claim 9.