Additional type induction frame lifting control system and milling machine

Abstract

The utility model discloses an additional type induction frame lifting control system and a milling machine. The additional type induction frame lifting control system comprises a milling drum operation induction module, a control unit module and an additional type hydraulic control module, the milling drum operation sensing module comprises a rotating speed sensor and a sensing piece; the rotating speed sensor is arranged in the belt box; the induction piece is arranged on the main belt pulley; the rotating speed sensor is used for sensing the sensing piece; the control unit module is connected with the rotating speed sensor; the additional hydraulic control module comprises an electromagnetic hydraulic throttle valve and a hydraulic one-way valve; one end of the electromagnetic hydraulic throttle valve is communicated with a third reversing connector of the milling machine frame lifting electromagnetic hydraulic reversing valve, and the other end of the electromagnetic hydraulic throttle valve is communicated with a first side first connector of the milling machine supporting leg oil cylinder; the control unit module is connected with the electromagnetic hydraulic throttle valve and used for controlling throttling of the electromagnetic hydraulic throttle valve. The hydraulic one-way valves are connected to pipelines at the two ends of the electromagnetic hydraulic throttle valve in parallel. According to the utility model, the fatigue speed and abrasion speed of the transmission belt and the clutch of the milling machine can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering equipment control technical field, concretely relates to an additional type induction vehicle frame lifting control system and milling and planing machine. BACKGROUND

[0002] Milling and planing machine is important construction equipment of municipal pavement repair engineering, has the characteristics such as high construction efficiency, environmental protection, high operating surface flatness;Existing milling and planing machine adopts diesel engine to drive pulley through clutch, drives milling drum to rotate through transmission belt, and carries out milling and planing construction to asphalt pavement or cement pavement.

[0003] Milling drum construction operation accelerates milling and planing machine diesel engine to work speed before operation, changes transmission belt tightness by pushing tightener through "tightening cylinder", and milling and planing machine "main pulley" drives transmission belt by engaging with transmission belt, drives "driven pulley" through transmission belt, driven pulley drives milling drum speed reducer, and milling drum speed reducer drives milling drum to work after reducing speed and amplifying torque.

[0004] Milling drum milling depth is controlled by the height of support leg cylinder, along with the contraction of support leg cylinder, the milling and planing machine frame is lowered, and the milling drum is from idling to contact with the milling operation surface, and due to the sudden change of torque required by the milling and planing machine milling operation, the torque output by the transmission belt and the clutch also suddenly changes, at this time, the elastic deformation of the clutch and the transmission belt occurs, and due to the sudden change of driving force, the clutch and the transmission belt will rapidly elastically deform, which is easy to cause the fatigue of the clutch and the transmission belt;The operation entering speed of the milling drum and the milling operation surface determines the fatigue speed and wear speed of the transmission belt and the clutch of the milling and planing machine;The existing equipment controls the milling and planing machine frame lowering speed by controlling the operation handle by the operator, and the milling drum lowering speed is greatly affected by the operation level of the operator.

[0005] In summary, an additional type induction vehicle frame lifting control system is needed to control the milling drum operation entering speed to achieve the purpose of slow grounding of the milling drum, and to reduce the fatigue speed and wear speed of the transmission belt and the clutch of the milling and planing machine.

[0006] Therefore, a new technology is needed to solve the problem of the lack of an additional type induction vehicle frame lifting control system in the prior art, and a new technology is needed to solve the problem of the lack of a new milling and planing machine with an additional type induction vehicle frame lowering control system in the prior art. UTILITY MODEL CONTENTS

[0007] In order to solve the above problems in the prior art, the utility model provides an additional type induction vehicle frame lifting control system, which reaches the purpose of slow contact of a milling drum and a milling operation surface by controlling the descending speed of a milling machine support leg oil cylinder, and reduces the fatigue speed and wear speed of a milling machine transmission belt and a clutch.

[0008] The utility model discloses the following technical scheme:

[0009] An additional type induction vehicle frame lifting control system, comprising a milling drum operation induction module, a control unit module and an additional type hydraulic control module.

[0010] The milling drum operation induction module comprises a rotating speed sensor and an induction piece; the rotating speed sensor is arranged in a belt box; the induction piece is arranged on a main belt pulley; and the rotating speed sensor is used for inducting the induction piece.

[0011] The control unit module is connected with the rotating speed sensor and is used for receiving information transmitted by the rotating speed sensor.

[0012] The additional type hydraulic control module comprises an electromagnetic hydraulic throttle valve and a hydraulic one-way valve; one end of the electromagnetic hydraulic throttle valve is communicated with a third reversing interface of a milling machine vehicle frame lifting electromagnetic hydraulic reversing valve, and the other end is communicated with a first side first interface of a milling machine support leg oil cylinder; the control unit module is connected with the electromagnetic hydraulic throttle valve and is used for controlling throttling of the electromagnetic hydraulic throttle valve; and the hydraulic one-way valve is connected in parallel on the pipelines at both ends of the electromagnetic hydraulic throttle valve.

[0013] Further, the control unit module comprises a control system ECU; the rotating speed sensor and the electromagnetic hydraulic throttle valve are connected with the control system ECU respectively.

[0014] Further, the electromagnetic hydraulic throttle valve comprises a first electromagnetic coil and a first valve core; the first electromagnetic coil can push the first valve core to act, and is used for making the electromagnetic hydraulic throttle valve play a throttling role.

[0015] Further, the rotating speed sensor is a non-contact rotating speed sensor; and the induction piece is arranged on the outside of the main belt pulley.

[0016] Another purpose of the utility model is to provide a milling machine which has the additional type induction vehicle frame lifting control system and can improve the use safety of the milling machine.

[0017] A milling machine, comprising a milling machine vehicle frame, a milling machine support leg, a milling machine support leg oil cylinder, a milling machine vehicle frame lifting electromagnetic hydraulic reversing valve, an oil tank and the additional type induction vehicle frame lifting control system.

[0018] The milling machine frame is provided with the milling machine outrigger; the milling machine outrigger cylinder is used to drive the milling machine outrigger to descend or ascend; the milling machine outrigger cylinder comprises a first side first interface and a second side first interface;

[0019] The milling machine frame lifting electromagnetic hydraulic reversing valve comprises a first reversing interface, a second reversing interface, a third reversing interface and a fourth reversing interface;

[0020] The second side first interface is in communication with the fourth reversing interface;

[0021] The oil tank is arranged on the milling machine frame; the first reversing interface and the second reversing interface are respectively in communication with the oil tank;

[0022] If the milling machine frame descends, the first reversing interface is in communication with the third reversing interface, and the second reversing interface is in communication with the fourth reversing interface;

[0023] If the milling machine frame ascends, the first reversing interface is in communication with the fourth reversing interface, and the second reversing interface is in communication with the third reversing interface.

[0024] Further, the milling machine further comprises an operating handle and a milling machine vehicle-mounted height control system; the operating handle and the milling machine vehicle-mounted height control system are arranged on the milling machine frame; the operating handle and the milling machine vehicle-mounted height control system are used to control the milling machine frame to descend or ascend.

[0025] Further, the milling machine further comprises a clutch, a main pulley, a tensioner, a transmission belt, a driven pulley and a milling drum;

[0026] The clutch, the main pulley, the tensioner, the driven pulley and the milling drum are arranged on the milling machine frame;

[0027] The clutch can drive the main pulley to rotate; the clutch comprises a clutch plate and a clutch pressure plate; the clutch plate, the clutch pressure plate and the main pulley are coaxially arranged; the clutch plate can be engaged with the clutch pressure plate to drive;

[0028] The main pulley is connected with the driven pulley through the transmission belt and the tensioner; the driven pulley is connected with the milling drum and can drive the milling drum to rotate.

[0029] Further, the milling machine further comprises a tensioning cylinder; the tensioning cylinder is arranged on the milling machine frame; the tensioner can adjust the tensioning degree of the transmission belt through the tensioning cylinder.

[0030] Further, the milling machine further comprises a speed reducer and a speed reducer connecting disc; the milling drum comprises a milling drum body and a milling cutter; the milling cutter is arranged on the milling drum body; the milling drum body is connected with the driven pulley through the speed reducer and the speed reducer connecting disc.

[0031] Further, the milling machine further comprises a milling machine track; the milling machine support leg is arranged on the milling machine track and is used for supporting the milling machine frame.

[0032] Compared with the prior art, the milling machine has the following beneficial effects:

[0033] Since the inductive element is arranged on the main pulley of the milling machine, the rotational speed sensor senses the rotational speed, outputs an electric signal, and the electric signal is transmitted to the control unit module; the control unit module modulates the signal, outputs a 24V direct current with different values to the electromagnetic hydraulic throttle valve, changes the opening of the electromagnetic hydraulic throttle valve by outputting different electric signals, and then controls the hydraulic oil flow entering the first side of the support leg oil cylinder, and then controls the descending speed of the milling machine support leg oil cylinder, and then controls the descending speed of the milling machine frame, and finally achieves the purpose of slow contact of the milling drum and the milling operation surface.

[0034] The milling machine has an additional type of inductive frame lifting control system, which can improve the use safety of the milling machine and the service life of the transmission belt and the clutch of the milling machine. BRIEF DESCRIPTION OF DRAWINGS

[0035] The technology of the utility model will be further described in detail below in combination with the drawings and specific embodiments:

[0036] Figure 1 is the elevation view (simplified schematic view) of the milling machine of the utility model (mainly showing the connection relationship of the main pulley, the tensioner, the transmission belt, the driven pulley, the milling drum and the milling machine frame);

[0037] Figure 2 is Figure 1 the connection relationship of the main pulley, the tensioner and the transmission belt in the milling machine;

[0038] Figure 3 is Figure 2 the inductive element is arranged on the main pulley, and the non-contact inductive schematic view (simplified schematic view) of the inductive element and the rotational speed sensor;

[0039] Figure 4 isFigure 2 A partial schematic diagram showing the connection relationship between the main pulley and the clutch disc, clutch pressure plate, engine flywheel, and clutch connecting plate.

[0040] Figure 5 yes Figure 2 Connection diagram of the driven pulley, reducer connecting plate, reducer, and milling drum (partial schematic diagram);

[0041] Figure 6 yes Figure 3 The diagram shows the connection relationship between the speed sensor and the control system ECU, the additional hydraulic control module, the milling machine frame lifting solenoid hydraulic reversing valve, and the first and second sides of the milling machine outrigger cylinders (simplified schematic diagram) (where only the first and second sides of the milling machine outrigger cylinders are shown).

[0042] Figure 7 It is a graph showing the relationship between rotational speed S and voltage V;

[0043] Figure 8 It is a graph showing the relationship between "input voltage V - output current I";

[0044] Figure 9 It is a graph showing the relationship between "input current I - valve opening Vo".

[0045] Figure label:

[0046] 1-Additional sensor-guided frame lifting control system;

[0047] 2-Milling drum operation sensing module; 21-Speed ​​sensor; 22-Sensing element;

[0048] 3-Control unit module; 31-Control system ECU;

[0049] 4-Additional hydraulic control module; 41-Electromagnetic hydraulic throttle valve; 42-Hydraulic check valve;

[0050] 5-Milling machine; 51-Milling machine frame; 52-Milling machine outrigger; 53-Milling machine outrigger cylinder; A-First side; A1-First side first interface; B-Second side; B1-Second side first interface; C-Milling machine frame lifting electromagnetic hydraulic reversing valve; C1-First reversing interface; C2-Second reversing interface; C3-Third reversing interface; C4-Fourth reversing interface; 54-Clutch; 541-Clutch disc; 542-Clutch pressure plate; 543-Engine flywheel; 544-Clutch connecting plate; 55-Main pulley; 56-Tensioner; 57-Drive belt; 58-Driven pulley; 59-Milling drum; 591-Milling drum body; 592-Milling cutter;

[0051] 61 - speed reducer; 62 - speed reducer connecting disc; 63 - milling machine track; 64 - depth setting cylinder; D - pipe; E - electric wire. DETAILED DESCRIPTION

[0052] The concept, specific structure and technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, scheme and effects of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The same reference signs used in the drawings indicate the same or similar parts.

[0053] It should be noted that, unless otherwise specified, when a certain feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and other descriptions used in the present application are only relative to the mutual positional relationship of the components of the present application in the drawings.

[0054] REFERENCE Figures 1 to 9 An additional induction vehicle frame lifting control system 1, comprising a milling drum operation induction module 2, a control unit module 3 and an additional hydraulic control module 4; the milling drum operation induction module 2, the additional hydraulic control module 4 are connected with the control unit module 3 respectively;

[0055] The milling drum operation induction module 2 comprises a rotating speed sensor 21 and an induction piece 22; the rotating speed sensor 21 is arranged in a belt box; the induction piece 22 is arranged on a main belt pulley 55; the rotating speed sensor 21 is used for inducting the induction piece 22;

[0056] The control unit module 3 is connected with the rotating speed sensor 21, and is used for receiving information (including electric signal) transmitted by the rotating speed sensor 21;

[0057] The additional hydraulic control module 4 comprises an electromagnetic hydraulic throttle valve 41 and a hydraulic one-way valve 42; one end of the electromagnetic hydraulic throttle valve 41 is in communication with a third reversing interface C3 of a milling machine vehicle frame lifting electromagnetic hydraulic reversing valve C, and the other end is in communication with a first side first interface A1 of a milling machine support leg oil cylinder 53; the control unit module 3 is connected with the electromagnetic hydraulic throttle valve 41, and is used for controlling throttling of the electromagnetic hydraulic throttle valve 41; the hydraulic one-way valve 42 is connected in parallel on the pipe D between the two ends of the electromagnetic hydraulic throttle valve 41.

[0058] REFERENCE Figures 1 to 9 In one embodiment, the control unit module 3 comprises a control system ECU 31; the rotating speed sensor 21 and the electromagnetic hydraulic throttle valve 41 are connected with the control system ECU 31 respectively.

[0059] Referring to Figures 1 to 9 In one embodiment, the control system ECU 31 is installed in the line box of the milling machine 5; the rotational speed sensor 21 is connected with the control system ECU 31 through the electric wire E; similarly, the electromagnetic hydraulic throttle valve 41 is connected with the control system ECU 31 through the electric wire E.

[0060] In one embodiment, the electromagnetic hydraulic throttle valve 41 comprises a first electromagnetic coil and a first valve core; the first electromagnetic coil can push the first valve core to act, so as to make the electromagnetic hydraulic throttle valve 41 play a throttling role.

[0061] Referring to Figure 3 In one embodiment, the rotational speed sensor 21 is a non-contact rotational speed sensor; the sensing part 22 is arranged outside the main pulley 55.

[0062] In one embodiment, the oil passage main aperture of the electromagnetic hydraulic throttle valve 41 is the same as the oil passage aperture of the milling machine frame lifting electromagnetic hydraulic reversing valve C.

[0063] Another purpose of the utility model is to provide a milling machine which has an additional sensing frame lifting control system and can improve the use safety of the milling machine.

[0064] Referring to Figures 1 to 9 A milling machine comprises a milling machine frame 51, a milling machine support leg 52, a milling machine support leg oil cylinder 53, a milling machine frame lifting electromagnetic hydraulic reversing valve C, an oil tank and the additional sensing frame lifting control system 1.

[0065] The milling machine frame 51 is provided with the milling machine support leg 52; the milling machine support leg oil cylinder 53 is used to drive the milling machine support leg 52 to descend or ascend; the milling machine support leg oil cylinder 53 comprises a first side first interface A1 and a second side first interface B1; wherein the "first side A" of the milling machine support leg oil cylinder 53 plays a "descending oil inlet high pressure side" when the milling machine frame 51 descends and plays an "ascending oil return low pressure side" when the milling machine frame 51 ascends; wherein the "second side B" of the milling machine support leg oil cylinder 53 plays a "descending oil return low pressure side" when the milling machine frame 51 descends and plays an "ascending oil inlet high pressure side" when the milling machine frame 51 ascends; there is a pressure difference between the "first side A" and the "second side B" of the milling machine support leg oil cylinder 53, so that the height of the milling machine support leg oil cylinder 53 is adjusted; the "first side A" and the "second side B" are not directly communicated and there is a piston in between; other structures of the milling machine support leg oil cylinder 53 can refer to the support leg oil cylinder of the existing milling machine;

[0066] The milling machine frame lifting electromagnetic hydraulic reversing valve C includes a first reversing interface C1, a second reversing interface C2, a third reversing interface C3 and a fourth reversing interface C4; other structures of the milling machine frame lifting electromagnetic hydraulic reversing valve C can refer to the existing electromagnetic hydraulic reversing valve of the milling machine.

[0067] The second side first interface B1 communicates with the fourth reversing interface C4.

[0068] The oil tank is arranged on the milling machine frame 41; the first reversing interface C2 and the second reversing interface C2 respectively communicate with the oil tank.

[0069] If the milling machine frame 51 is lowered, the first reversing interface C1 (note: as a high-pressure port) communicates with the third reversing interface C3, and the second reversing interface C2 (note: as a low-pressure port) communicates with the fourth reversing interface C4.

[0070] If the milling machine frame 51 is raised, the first reversing interface C1 (note: as a high-pressure port) communicates with the fourth reversing interface C4, and the second reversing interface C2 (note: as a low-pressure port) communicates with the third reversing interface C3.

[0071] In an embodiment, the milling machine 5 further includes an operation handle and a milling machine on-board height control system; the operation handle and the milling machine on-board height control system are arranged on the milling machine frame 51; the operation handle and the milling machine on-board height control system are used to control the milling machine frame 51 to be lowered or raised (which can refer to the prior art). The milling machine on-board height control system is the on-board height control system possessed by the existing milling machine, and the milling machine on-board height control system can be used in combination with the additional induction frame lifting control system 1.

[0072] Referring to Figures 1 to 9 In an embodiment, the milling machine 5 further includes a clutch 54, a main pulley 55, a tension pulley 56, a transmission belt 57, a driven pulley 58 and a milling drum 59.

[0073] The clutch 54, the main pulley 55, the tension pulley 56, the driven pulley 58 and the milling drum 59 are arranged on the milling machine frame 51.

[0074] The clutch 54 can drive the main pulley 55 to rotate; the clutch 54 includes a clutch plate 541 and a clutch pressure plate 542; the clutch plate 541, the clutch pressure plate 542 and the main pulley 55 are coaxially arranged; the clutch plate 541 can be engaged with the clutch pressure plate 542 for transmission.

[0075] The main pulley 55 is connected with the driven pulley 58 through the transmission belt 57 and the tensioner 56, and the driven pulley 58 is connected with the milling drum 59 and can drive the milling drum 59 to rotate.

[0076] Preferably, the milling machine 5 further comprises an engine, an engine flywheel 543 and a clutch connecting disc 544, the engine is coaxially connected with the clutch 54 and the main pulley 55 through the engine flywheel 543 and the clutch connecting disc 544, and the rotation of the main pulley 55 is powered by the engine. Preferably, the engine is arranged on the milling machine frame 51.

[0077] In an embodiment, the milling machine 5 further comprises a tensioning oil cylinder, the tensioning oil cylinder is arranged on the milling machine frame 51, and the tensioner 56 can adjust the tension of the transmission belt 57 through the tensioning oil cylinder.

[0078] Referring to Figures 1 to 9 In an embodiment, the milling machine 5 further comprises a speed reducer 61 and a speed reducer connecting disc 62, the milling drum 59 comprises a milling drum body 591 and a milling cutter 592, the milling cutter 592 is arranged on the milling drum body 591, and the milling drum body 591 is connected with the driven pulley 58 through the speed reducer 61 and the speed reducer connecting disc 62. Wherein, the rotation of the driven pulley 58 can drive the milling drum body 591 to rotate.

[0079] In an embodiment, the milling machine 5 further comprises a milling machine track 63, the milling machine support leg 52 is arranged on the milling machine track 63 and is used for supporting the milling machine frame 51. Wherein, the milling machine track 63 is used for moving the milling machine 5.

[0080] Other contents of the milling machine of the utility model are referred to the prior art, and will not be repeated here.

[0081] Referring to Figures 1 to 9 In an embodiment, the milling machine is used as follows:

[0082] (1) The first case is the height adjustment of the milling machine 5 during the walking of the milling machine 5.

[0083] When the milling machine 5 is walking, the milling drum 59 does not rotate, the main pulley 55 does not work, the milling drum operation induction module 2 has no induction current, the control unit module 3 has no electric signal output, the additional hydraulic control module 4 does not work, the hydraulic oil descending circuit of the milling machine 5 related to the support leg oil cylinder is not throttled, and the normal milling machine frame 51 descending control mode is executed.

[0084] (2) The second case is the height descending control of the milling machine frame 51.

[0085] Before the milling machine 5 works, check the milling drum 59 without jamming, confirm normal, through the clutch 54 drive the main pulley 55, the main pulley 55 starts to rotate, the milling drum operation sensing module 2 senses the speed, different voltage is sensed according to different speed, voltage output to the control unit module 3, the control unit module 3 modulates the input electrical signal according to the function relationship, and outputs the electrical signal to the additional hydraulic control module 4. The additional hydraulic control module 4 receives the equal pressure and unequal flow electrical signal, the first electromagnetic coil pushes the first valve core to move, different current causes the first valve core of the electromagnetic hydraulic throttle valve 41 to act to different positions, different positions have different throttling effects, the operator controls the milling machine support leg oil cylinder 53 to adjust the height and drop through the operation handle, because the additional hydraulic control module 4 controls the hydraulic oil drop high pressure loop of the milling machine support leg oil cylinder 53, the hydraulic oil drop high pressure loop is affected by throttling, the milling machine frame 51 drops at a lower speed, the milling drum 59 and the milling operation surface enter at a lower speed, reducing the situation that the transmission belt 57 and the clutch 54 impact too much because the milling drum 59 enters the milling operation surface too fast, and then causing too fast wear and breakage.

[0086] Wherein, when the milling machine frame 51 descends, the less the first side first interface A1 of the milling machine support leg oil cylinder 53 enters the oil, the slower the milling machine frame 51 descends, the more the first side first interface A1 of the milling machine support leg oil cylinder 53 enters the oil, the faster the milling machine frame 51 descends. Wherein, the "first side A" in the "first side first interface A1" plays a "descending oil inlet high pressure side" when the milling machine frame 51 descends. When the milling machine frame 51 descends, the electromagnetic hydraulic throttle valve 41 controlled has a throttling adjustment effect, and the hydraulic one-way valve 42 does not pass through the hydraulic oil circuit because of its one-way nature when the milling machine frame 51 descends.

[0087] (3) The third case is the milling machine frame 51 height rising control.

[0088] Because the electromagnetic hydraulic throttle valve 41 and the hydraulic one-way valve 42 are installed in parallel, and because the hydraulic one-way valve 42 has one-way nature, the hydraulic one-way valve 42 plays an important role when the milling machine frame 51 rises. When the milling machine frame 51 rises, the "first side A" changes from playing a "descending oil inlet high pressure side" to playing a "rising oil return low pressure side", at this time, the hydraulic oil returns through the hydraulic one-way valve 42, and the existence of the electromagnetic hydraulic throttle valve 41 does not affect the rising speed of the milling machine frame 51.

[0089] In one embodiment, the specific example is as follows:

[0090] (1)The first kind: is the milling machine does not have the utility model "additional induction frame lifting control system" when the operation.

[0091] A construction project, Xugong XM1305F milling machine, the milling machine milling depth by changing the milling machine leg cylinder stroke to determine the milling depth, through the depth of the cylinder 64 and wire rope detection milling depth (see prior art)(depth of the cylinder 64 structure diagram can also see Figure 1 ), the milling machine milling before the need to adjust the speed to the working speed, no-load start milling drum, by adjusting the milling machine leg cylinder to reduce the milling machine frame height, milling drum and milling operation surface contact, contact instantaneously, milling drum to maintain the required torque sudden change, transmission belt and clutch plate transmission power mutation, mutation curve and milling operation surface hardness and milling drum into the milling operation surface depth rate is positively correlated, in the case of milling operation surface hardness can not be changed, the operation into the speed of the milling drum affect the service life of the transmission belt and clutch plate, the project milling machine descent speed affected by the operator operating speed, unable to effectively control the wear of the milling machine transmission belt and milling machine clutch plate.

[0092] (2)The second kind: is the milling machine has the utility model "additional induction frame lifting control system" when the operation.

[0093] A construction project, refer to Figures 1 to 9, the milled machine 5 has the "additional induction frame lifting control system 1" of the utility model, and the operation mode is as follows: the milled machine operator adjusts the milled machine 5 to the working speed, starts the clutch 54, the clutch plate 541 and the clutch pressure plate 542 are engaged, the main pulley 55 rotates, the tension pulley 56 drives the transmission belt 57 to start running under the driving of the tension cylinder, the transmission belt 57 drives the driven pulley 58, and then drives the milling drum 59, and the milling drum 59 runs to the normal speed; wherein the main pulley 55 rotates, drives the induction piece 22 installed on the outside to rotate, and the rotation speed sensor 21 generates voltage through speed induction, and the voltage output by the rotation speed sensor 21 enters the control system ECU 31, the input signal is modulated into a direct current 24V constant voltage current by the control system ECU 31 to the electromagnetic hydraulic throttle valve 41, and after receiving the direct current 24V constant voltage current, the electromagnetic hydraulic throttle valve 41 enters the throttling state, the operator controls the milled machine frame 51 to descend through the operation handle, the frame descending side coil of the milled machine frame lifting electromagnetic hydraulic reversing valve C is electrified, the internal valve core position is adjusted, the high-pressure hydraulic oil passes through the "milled machine frame lifting electromagnetic hydraulic reversing valve C" to the third reversing interface C3 through the first reversing interface C1, and after the throttling effect of the electromagnetic hydraulic throttle valve 41, the high-pressure hydraulic oil enters the first side first interface A1 of the milled machine support oil cylinder 53, the descending speed of the milled machine frame 51 is reduced, and the speed of the milling drum 59 of the milled machine 5 into the milling operation surface is reduced.

[0094] Specifically, when the milled machine does not have the "additional induction frame lifting control system" of the utility model, the milled machine needs 32 seconds from starting idling to completing entering the milling operation surface; when the milled machine 5 has the "additional induction frame lifting control system 1" of the utility model, the milled machine 5 needs 45-60 seconds from starting idling to completing entering the milling operation surface; because the operation entering speed of the milling drum 59 into the milling operation surface is reduced, the impact received by the transmission belt 57 and the clutch plate 541 of the milled machine 5 is reduced, and the service life of the transmission belt 57 and the clutch plate 541 is improved.

[0095] In the process that the milled machine 5 completes the milling operation, and the milling drum 59 leaves the milling operation surface, the operator makes the frame ascending side coil of the milled machine frame lifting electromagnetic hydraulic reversing valve C electrified through the control operation handle, the internal valve core position is adjusted, the high-pressure hydraulic oil passes through the "milled machine frame lifting electromagnetic hydraulic reversing valve C" to the fourth reversing interface C4 through the first reversing interface C1, the high-pressure hydraulic oil passes through the pipeline D to the second side first interface B1 of the milled machine support oil cylinder 53, and the hydraulic oil of the first side A returns through the hydraulic one-way valve 42, the ascending operation of the milled machine frame 51 is not affected by the throttling effect of the electromagnetic hydraulic throttle valve 41, and the ascending speed of the milled machine frame 51 is not affected by the throttling effect.

[0096] Reference Figures 1 to 9In one embodiment, the milling machine 5 is provided with the additional induction vehicle frame lifting control system 1 of the utility model, and a "rotation speed S-voltage V" relationship image is obtained through operation, and the image is referred to Figure 7 ; wherein the horizontal coordinate represents the rotation speed of the main pulley 55, and the vertical coordinate represents the induction voltage (i.e. the induction voltage generated by the induction piece 22 rotating with the main pulley 55 and the rotation speed sensor 21); in the utility model, in order to avoid the electromagnetic hydraulic throttle valve 41 from being throttled by the slight rotation of the main pulley 55, the main pulley 55 does not generate an induction voltage when the rotation speed is 0-S1, and only when the rotation speed of the main pulley 55 exceeds S1, the output voltage V with a function ratio of positive value K1 is generated, and specifically, the function relationship formula of the image is V=K1 (S-S1).

[0097] A "input voltage V-output current I" relationship image (for the control system ECU 31, the input voltage V, and for the rotation speed sensor 21, the output voltage) is obtained through operation, wherein the output voltage of the rotation speed sensor 21 is transmitted to the control system ECU 31 through the line in the machine body and exists as the input of the control system ECU 31, and the input signal is modulated by the control system ECU 31 into a direct current 24V constant voltage variable current I corresponding to the input voltage V in a positive ratio K2; refer to Figure 8 , the horizontal coordinate represents the input voltage V of the control system ECU 31, and the vertical coordinate represents the output current I of the control system ECU 31; the function relationship formula of the image is I=K2V.

[0098] A "input current I-valve opening degree Vo" relationship image (for the electromagnetic hydraulic throttle valve 41, the input current I, and for the control system ECU 31, the output current) is obtained through operation, wherein when the electromagnetic hydraulic throttle valve 41 does not receive the current signal of the control system ECU 31, the valve opening degree is in the middle position, the throttling effect is 0, and the valve opening degree Vo is 1, at this time, the electromagnetic hydraulic throttle valve 41 is in the "unthrottling" state, when the electromagnetic hydraulic throttle valve 41 receives the direct current 24V constant voltage variable current I of the control system ECU 31, the first electromagnetic coil pushes the first valve core to move, and the electromagnetic hydraulic throttle valve 41 plays a throttling role, when the input current I reaches the maximum 1, the throttling effect reaches the maximum effect, and the valve opening degree is Vo1; wherein the valve opening degree Vo and the input current I correspond to the inverse ratio K3. Refer to Figure 9 , the horizontal coordinate represents the input current I of the electromagnetic hydraulic throttle valve 41, and the vertical coordinate represents the valve opening degree Vo of the electromagnetic hydraulic throttle valve 41. The function relationship formula of the image is Vo=K3I+1.

[0099] Preferably, to change the throttling effect, the effect of throttling can be increased by increasing the absolute value of "K1 value, K2 value, K3 value", the descending speed of the milling machine support 51 is reduced, the working entering time of the milling drum 59 into the milling work surface is increased, and the impact and stress mutation of the transmission belt 57 and the clutch 54 when the milling drum 59 enters the milling work surface are reduced.

[0100] The utility model discloses a kind of additional induction vehicle frame lifting control systems and other contents of milling machine, see prior art, here no longer repeat.

[0101] The utility model discloses a kind of additional induction vehicle frame lifting control systems and other contents of milling machine, see prior art, here no longer repeat.

[0102] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, so any modification, equivalent change and modification to the above embodiment according to the technical essence of the utility model, which does not deviate from the technical scheme content of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. An add-on inductive bed-lift control system, characterized by, The milling drum operation induction module, the control unit module and the additional hydraulic control module are comprised; The milling drum operation induction module comprises a rotating speed sensor and an induction piece; the rotating speed sensor is arranged in a belt box; the induction piece is arranged on a main belt pulley; the rotating speed sensor is used for inducting the induction piece; The control unit module is connected with the rotating speed sensor and is used for receiving information transmitted by the rotating speed sensor; The additional hydraulic control module comprises an electromagnetic hydraulic throttle valve and a hydraulic one-way valve; one end of the electromagnetic hydraulic throttle valve is communicated with a third reversing interface of a milling machine frame lifting electromagnetic hydraulic reversing valve, and the other end is communicated with a first side first interface of a milling machine support oil cylinder; the control unit module is connected with the electromagnetic hydraulic throttle valve and is used for controlling throttling of the electromagnetic hydraulic throttle valve; and the hydraulic one-way valve is connected in parallel on pipelines at both ends of the electromagnetic hydraulic throttle valve.

2. The add-on inductive vehicle frame lift control system of claim 1, wherein, The control unit module comprises a control system ECU; the rotating speed sensor and the electromagnetic hydraulic throttle valve are respectively connected with the control system ECU.

3. The add-on inductive vehicle bed lift control system of claim 1, wherein, The electromagnetic hydraulic throttle valve comprises a first electromagnetic coil and a first valve core; the first electromagnetic coil can push the first valve core to act and is used for making the electromagnetic hydraulic throttle valve throttle.

4. The add-on inductive vehicle bed lift control system of claim 1, wherein, The rotating speed sensor is a non-contact rotating speed sensor; and the induction piece is arranged outside the main belt pulley.

5. Milling and grinding machine, characterized in that, The milling machine further comprises a milling machine frame, a milling machine support, a milling machine support oil cylinder, a milling machine frame lifting electromagnetic hydraulic reversing valve, an oil tank and the additional induction frame lifting control system according to any one of claims 1 to 4; The milling machine frame is provided with the milling machine support; the milling machine support oil cylinder is used for driving the milling machine support to descend or ascend; and the milling machine support oil cylinder comprises a first side first interface and a second side first interface; The milling machine frame lifting electromagnetic hydraulic reversing valve comprises a first reversing interface, a second reversing interface, a third reversing interface and a fourth reversing interface; The second side first interface is communicated with the fourth reversing interface; The oil tank is arranged on the milling machine frame; and the first reversing interface and the second reversing interface are respectively communicated with the oil tank; If the milling machine frame descends, the first reversing interface is communicated with the third reversing interface, and the second reversing interface is communicated with the fourth reversing interface; If the milling machine frame ascends, the first reversing interface is communicated with the fourth reversing interface, and the second reversing interface is communicated with the third reversing interface.

6. Milling and grinding machine according to claim 5, characterized in that The milling machine further comprises an operating handle and a milling machine vehicle-mounted height control system; the operating handle and the milling machine vehicle-mounted height control system are arranged on the milling machine frame; and the operating handle and the milling machine vehicle-mounted height control system are used for controlling the milling machine frame to descend or ascend.

7. Milling and grinding machine according to claim 6, characterized in that The milling machine further comprises a clutch, a main belt pulley, a tensioner, a transmission belt, a driven belt pulley and a milling drum; The clutch, the main belt pulley, the tensioner, the driven belt pulley and the milling drum are arranged on the milling machine frame; The clutch can drive the main pulley to rotate; the clutch comprises a clutch plate and a clutch pressure plate; the clutch plate, the clutch pressure plate and the main pulley are coaxially arranged; the clutch plate can engage with the clutch pressure plate to drive; The main pulley is connected with the driven pulley through the transmission belt and the tensioner; the driven pulley is connected with the milling drum and can drive the milling drum to rotate.

8. Milling and grinding machine according to claim 7, characterized in that The milling machine further comprises a tensioning oil cylinder; the tensioning oil cylinder is arranged on the milling machine frame; the tensioner can adjust the tension of the transmission belt through the tensioning oil cylinder.

9. Milling and grinding machine according to claim 8, characterized in that The milling machine further comprises a speed reducer and a speed reducer connecting disc; the milling drum comprises a milling drum body and a milling cutter; the milling cutter is arranged on the milling drum body; the milling drum body is connected with the driven pulley through the speed reducer and the speed reducer connecting disc.

10. Milling and grinding machine according to claim 9, characterized in that The milling machine further comprises a milling machine track; the milling machine supporting leg is arranged on the milling machine track and is used for supporting the milling machine frame.

Images