CN102837949A - Stable transmission machine - Google Patents

Abstract

The invention relates to a stable conveyor, which includes a transmission mechanism, a front caster frame and a rear caster frame. A hydraulic jack is arranged on the front caster frame, and the upper end of the hydraulic jack is fixedly connected to the middle of the beam. The two ends of the crossbeam are hinged with the frame of the transmission mechanism. There are connecting rods hinged between the front caster frame and the two sides of the transmission mechanism. The two ends of the rear caster sleeve shaft and the two front caster sleeves A transverse bushing is set on the shaft, and the outer wall of the transverse bushing is fixedly connected with a longitudinal caster frame, and the lower sides of the front and rear ends of the longitudinal caster frame are provided with universal wheels; A hydraulic oil supply system for controlling the lifting of the hydraulic jack is provided. Since the smooth conveyor is equipped with an 8-wheel balancing system capable of universal balancing and a hydraulic lifting system, it not only has strong self-balancing ability, but also has the advantages of simple structure and long service life.

Description

A smooth conveyor

technical field

The invention relates to a conveyor, in particular to a smooth conveyor.

Background technique

For example, the patent No. 200920138405.6 of the tube swallowing adjustable conveyor uses a triangular support frame with a hydraulic cylinder to lift the slope of the conveyor. The inertial impact of the fast falling speed causes the frame to break, and the auxiliary conveying mechanism at the lower end of the roller at the feeding end of the conveyor is difficult to move, takes up more space in the mechanism, and is inconvenient to operate; and the driving pulley and driven pulley of the transmission mechanism The belt pulley system is made of smooth rods (pipes) welded and turned, and the middle part of the pulley pulley is difficult to arch upwards, which reduces the stability of the belt, and its angle of rotation for the belt is not enough to drive the friction force. The tension of the belt will increase the load of the motor, and the space of the chute on the end cover of the inclined roller is too large, which is prone to the phenomenon of entanglement and other disadvantages.

Based on the above technical problems, those skilled in the art have developed an improved structure of the swallowing adjustable conveyor. The patent number is 201020688502.5. For the lifting mechanism, the force of the vertical mechanism is more concentrated, and the force of the front wheel frame is more direct, which greatly reduces the fracture failure rate of the lifting mechanism, and because the hydraulic jack is a socket mode, that is, the diameter of the upper end of the ejector rod is small, The diameter of the ejector rod at the lower end is large. When rising, the rising speed is slow first and then fast; However, when it is rising, it will be slow first and then fast, resulting in a greater impact on the hydraulic pipeline and mechanism when it stops rising, which cannot further improve the service life of the conveyor, and the improved structure of the swallowing adjustable conveyor There is no anti-drop safety frame. Once the oil leaks from the pipeline or the oil leaks due to the failure of the control valve, the conveyor will suddenly fall, which will easily cause damage to the conveyor and personal safety accidents.

Contents of the invention

The purpose of the present invention is to provide a stable conveyor with strong self-balancing ability, simple structure and long service life.

The technical solution of the present invention lies in: a stable type conveyor, including a transmission mechanism covered with a transmission belt, a front caster frame with universal wheels and a rear caster frame, the front caster frame is provided with a top The hydraulic jack that holds the crossbeam on the bottom side of the transmission mechanism, the upper end of the hydraulic jack is fixedly connected to the middle of the crossbeam, the two ends of the crossbeam are hinged to the frame of the transmission mechanism through the connecting piece, the two sides of the front caster frame Connecting rods are respectively hinged with the two sides of the transmission mechanism, and it is characterized in that: the two sides of the front caster frame are provided with front caster bushing shafts, and the rear bottom side of the transmission mechanism is provided with rear caster bushing shafts, so Both ends of the rear caster shaft and the two front caster shafts are provided with a transverse bushing, the outer wall of the transverse bushing is fixedly connected to a longitudinal caster frame, and the front and rear ends of the longitudinal caster frame are lowered. Both sides are provided with universal wheels; between the outer ends of the two front caster shafts and the corresponding side parts of the front caster frame, reinforced angle steel is provided, and between the rear caster transverse axis and the corresponding side part of the transmission mechanism A reinforced flat steel is arranged between them; a hydraulic oil supply system for controlling the lifting of the hydraulic jack is also arranged on the front caster frame.

Further, the above-mentioned hydraulic oil supply system includes a hydraulic oil tank, a hydraulic pump and a control valve, the oil outlet of the hydraulic oil tank is connected to the oil inlet of the hydraulic pump through the first oil delivery pipeline, and the high-pressure oil outlet of the hydraulic pump is The second oil delivery pipeline is connected to the oil inlet end of the control valve, the oil outlet end of the control valve is connected to the oil inlet end of the hydraulic jack through the third oil delivery pipeline, and the oil discharge end of the control valve is connected to the hydraulic jack through the fourth oil delivery pipeline. Hydraulic tank.

Further, for the convenience of control, the control valve is a manual control valve. By operating the handle of the manual control valve, the hydraulic oil of the hydraulic jack can be discharged into the hydraulic oil tank to realize the retraction action of the hydraulic jack.

Further, in order to improve the degree of automation of the smooth conveyor, the above-mentioned hydraulic oil supply system also includes a control circuit, the control valve is an electromagnetic reversing valve, and an output end of the control circuit is connected to the control valve through the first line , the other output end of the control circuit is connected with the hydraulic oil pump through the second line and the first frequency converter, and the signal input end of the control circuit is connected with an input keyboard. The rising height can be input through the input keyboard, and the motor speed of the hydraulic oil pump can be adjusted through the first frequency converter, so as to control the speed change of the lifting speed of the smooth conveyor. For example, the process of accelerating from zero, then constant speed, and then decelerating to stop is conducive to the rotation of each hinge joint of the smooth conveyor under the condition of force balance, which improves the stability of the mechanism and improves the lifting system of the conveyor. service life.

Further, in order to avoid the conveyor falling due to the sudden rupture of the hydraulic pipeline, etc., causing damage to the conveyor and personal safety accidents. An anti-drop safety frame is also arranged between the transmission mechanism and the front caster frame, and the anti-fall safety frame includes a first pole, a second pole and a third pole whose ends are hinged together. The other end of a pole is hinged on the side of the beam, the other end of the second pole is hinged on the side of the front caster frame, and the third pole is located between the first pole and the second pole. between, and the other end of the third pole is set in the guide groove, the other end of the third pole is also provided with a positioning slot, and the guide slot is provided with a positioning slot Matching ratchets, the guide slot is sleeved on the sleeve shaft on the side of the front caster frame through a sleeve, and a reinforcement is also provided between the outer end of the sleeve shaft and the side of the front caster frame. Ribs.

Further, in order to realize unified control of the ratchets on the left and right sides, the ratchets on both sides of the front caster frame are controlled by a cross bar, and the cross bar passes through the guide grooves on both sides of the front caster frame, and its One end is provided with a control handle.

Further, in order to realize the intelligent control of the transmission speed of the transmission mechanism, the upper part of the transmission mechanism is provided with a driving roller, and the lower part is provided with a driven roller; the driving roller is directly driven by a reduction motor, and the reduction motor is driven by a second frequency converter To control its rotational speed, the signal input end of the second frequency converter is connected to a control module, and the control module has a signal input module.

Further, in order to realize the intelligent control of the smooth conveyor, the control circuit and the control module are arranged in a control box with a control panel, the input keyboard and the signal input module are all arranged on the control panel, and the control box Set on the front caster frame, easy to control.

Further, the frame of the transmission mechanism is provided with a tensioning mechanism for tensioning the belt.

Compared with background technology, the advantage of the present invention is:

(1) Since the conveyor of this application is equipped with an 8-wheel balance system that can be universally balanced, that is, there are 4 universal wheels on the front and rear caster frames, and the longitudinal caster frames on the same side can rotate around their sleeve shafts , so that the conveyor has a strong self-balancing ability and can adapt to various terrain work sites; while the improved structure of the swallowing adjustable conveyor disclosed in Comparative Document 2 (patent No. 201020688502.5), its front frame only uses The two left and right casters are easy to make it tilt forward and backward, the stability is poor, and the internal balance force of the mechanism is increased, which is easy to damage and age the mechanism. the

(2) The conveyor only uses one hydraulic jack to realize the lifting function, the design is reasonable, the overall structure is simple, and the cost is low; in the comparison document 2 (the conveyor with the patent No. The front caster frame is fixed, the hydraulic cylinder cannot be fixed firmly, the stress is concentrated, and it is easy to break. And the hydraulic jack cylinder upper side part of the present application is also fixed by a frame structure, and between the frame structure and the column of the vehicle frame body is fixed through the angle steels in the four directions of upper left, lower left, upper right and lower right. Stress concentration occurs, and the fixation between the hydraulic jack and the front caster frame is more secure.

(3) The lifting action of the hydraulic jack of the conveyor is controlled by the first frequency converter, and the rising height can be input through the input keyboard, and the motor speed of the hydraulic oil pump is adjusted through the first frequency converter, so as to control the lifting speed of the conveyor Change quickly. For example, the process of accelerating from zero, then constant speed, and then decelerating to stop is beneficial to the rotation of each hinge joint of the conveyor under the condition of force balance, which improves the service life of the conveyor lifting system;

(4) The conveyor is equipped with an anti-drop safety frame, which can prevent the conveyor from falling suddenly when the oil leaks from the pipeline or the control valve fails, so as to protect the conveyor from damage and ensure personal safety;

(5) The control box installed on the front caster frame is used for unified control, which is convenient to control.

Description of drawings

Fig. 1 is a side view structural schematic diagram of a stable conveyor in an embodiment.

Fig. 2 is a block diagram of the control circuit of the smooth conveyor in the embodiment.

Fig. 3 is a front structural schematic diagram of a front caster frame with a manual control valve.

Fig. 4 is a schematic cross-sectional view of the connection structure between the transverse bushing and the longitudinal caster frame.

Fig. 5 is a front structural schematic diagram of the front caster frame with an electromagnetic reversing valve.

Fig. 6 is a cross-sectional view of the mating state of the ratchet and the positioning slot.

Fig. 7 is a schematic cross-sectional view of the driving roller.

Explanation of symbols: 1-transmission mechanism 2-front caster frame 3-rear caster frame 4-beam 5-hydraulic jack 6-connecting rod 7-front caster sleeve shaft 8-rear caster sleeve shaft 9-transverse bushing 10 - Longitudinal caster frame 11 - Universal wheel 12 - Reinforced angle steel 13 - Reinforced flat steel 14 - Hydraulic oil tank 15 - Hydraulic pump 16 - Control valve 17 - First oil pipeline 18 - Second oil pipeline 19 - Third oil pipeline 20 - The fourth oil pipeline 21-handle 22-control circuit 23-first line 24-second line 25-first frequency converter 26-input keyboard 27-anti-drop safety frame 28-first support rod 29-second support rod 30 -Third support rod 31-Guide slot 32-Location card slot 33-Pawl 34-Sleeve 35-Sleeve shaft 36-Reinforcing rib plate 37-Horizontal bar 38-Control handle 39-Decelerating motor 40-Second inverter 41-control module 42-input module 43-control box 45-tension mechanism 46-roller 47-rotating shaft 48-shaft plate.

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

As shown in Figures 1, 2 and 3, a stable conveyor includes a transmission mechanism 1 coated with a transmission belt, a front caster frame 2 provided with universal wheels, and a rear caster frame 3, the front caster The vehicle frame 2 is provided with a hydraulic jack 5 that withstands the bottom crossbeam 4 of the transmission mechanism. The upper end of the hydraulic jack 5 is fixedly connected to the middle of the crossbeam 4. The two sides of the front caster frame 2 and the two sides of the transmission mechanism are respectively hinged with connecting rods 6, and the two sides of the front caster frame 2 are provided with front caster bushing shafts 7, and the transmission mechanism 2 The bottom side of the rear part is provided with a rear caster sleeve shaft 8, and a transverse sleeve 9 is sleeved on both ends of the rear caster sleeve shaft 8 and the two front caster sleeve shafts 7, and the outer wall of the lateral sleeve It is fixedly connected with a longitudinal caster frame 10, and the lower sides of the front and rear ends of the longitudinal caster frame 10 are provided with universal wheels 11; Reinforced angle steel 12 is arranged between the side parts, and reinforced flat steel 13 is arranged between the rear caster horizontal shaft 8 and the corresponding side part of the transmission mechanism 2; a hydraulic jack for controlling Lifting hydraulic oil supply system.

As shown in Figure 2, the above-mentioned hydraulic oil supply system includes a hydraulic oil tank 14, a hydraulic pump 15 and a control valve 16, the oil outlet of the hydraulic oil tank 14 is connected to the oil inlet of the hydraulic pump 15 through the first oil delivery pipeline 17, The high-pressure oil outlet of the hydraulic pump 15 is connected to the oil inlet end of the control valve 16 through the second oil delivery pipeline 18, and the oil outlet end of the control valve 16 is connected to the oil inlet end of the hydraulic jack 5 through the third oil delivery pipeline 19 , the oil drain end of the control valve 16 is connected to the hydraulic oil tank 14 through the fourth oil delivery pipeline 20 .

As shown in Figure 3, in one embodiment, for the convenience of control, the control valve 16 is a manual control valve, by operating the handle 21 of the manual control valve, the hydraulic oil of the hydraulic jack 5 can be discharged into the hydraulic oil tank 14 , to realize the retraction action of the hydraulic jack 5 .

As shown in Figures 2 and 5, in another embodiment, in order to improve the degree of automation of the conveyor, the above-mentioned hydraulic oil supply system also includes a control circuit 22, the control valve 16 is an electromagnetic reversing valve, and the control circuit One output end of 22 is connected with the control valve 16 through the first line 23, and the other output end of the control circuit 22 is connected with the hydraulic oil pump 14 through the second line 24 and the first frequency converter 25, and the control circuit 22 The input keyboard 26 is connected to the signal input end of the signal. The ascending or descending height can be input through the input keyboard 26, and the motor speed of the hydraulic pump 15 can be adjusted through the first frequency converter 25, so as to control the speed change of the ascending and descending speed of the conveyor. For example, the process of acceleration from zero, constant speed, and deceleration to stop is realized, which is conducive to the rotation of each hinge joint of the conveyor under the condition of force balance, and improves the service life of the lifting system of the conveyor.

As shown in Figures 1, 5 and 6, in order to avoid the conveyor falling due to the sudden rupture of the hydraulic pipeline, etc., causing damage to the conveyor and casualties. An anti-drop safety frame 27 is also provided between the transmission mechanism and the front caster frame, and the anti-fall safety frame 27 includes a first pole 28, a second pole 29 and a third pole whose ends are hinged together. 30, the other end of the first pole 28 is hinged on the side of the beam, the other end of the second pole 29 is hinged on the side of the front caster frame 2, and the third pole 30 is located at Between the first pole 28 and the second pole 29, and the other end of the third pole 30 is passed through the guide groove 31, and the other end of the third pole 30 is also provided with a positioning card groove 32, the guide groove 31 is provided with a pawl 33 for matching with the positioning slot, the guide groove 31 is sleeved on the sleeve shaft 35 on the side of the front caster frame 2 through a sleeve 34, the A rib plate 36 is also provided between the outer end of the sleeve shaft 35 and the side of the front caster frame.

As shown in Figures 5 and 6, in this embodiment, in order to realize the unified control of the ratchets 33 on the left and right sides, the ratchets on both sides of the front caster frame are controlled by a cross bar 37, and the cross bar 37 The guide slots 31 on both sides of the front caster frame are pierced, and a control handle 38 is provided at one end thereof.

As shown in Figure 2, in order to realize the intelligent control of the transmission speed of the transmission mechanism, the upper part of the transmission mechanism 1 is provided with a driving roller, and its lower part is provided with a driven roller; the driving roller is directly driven by a reduction motor 39, and the deceleration The rotation speed of the motor 39 is controlled by a second frequency converter 40 , the signal input end of the second frequency converter 40 is connected with a control module 41 , and the control module has a signal input module 42 . In Comparative Document 2 (Patent No. 201020688502.5), the driving roller is driven by a three-stage deceleration method, and the overall structure is complicated. However, the present application uses a reduction motor 39 to directly drive the driving roller, which not only has a simple structure, but also is not prone to belt slippage. Phenomenon, to ensure the reliability of the transmission.

As shown in Figure 2, in order to realize the intelligent control of the conveyor, the control circuit 22 and the control module 41 are arranged in a control box 43 with a control panel, and the input keyboard and the signal input module are all arranged on the control panel , the control box 43 is arranged on the front caster frame, and the control is convenient.

As shown in Figure 7, in this embodiment, the driving roller and the driven roller are composed of a drum 46, a rotating shaft 47 and a shaft disc 48, the drum is fixedly connected to the rotating shaft through the shaft disc, and the outer wall of the drum There is a texture on the top to prevent the belt from slipping. Compared with reference document 2 (patent No. 201020688502.5), such a structure is easier to ensure the coaxiality of the roller 46 and the rotating shaft 47, which is beneficial to improve the service life of the bearing. In Comparative Document 2, the driving roller and the driven roller are welded with steel bars, and the middle part is arched, which has a strong destructive force on the middle part of the belt, which is likely to cause damage to the middle part of the belt and affect the service life of the belt.

In this embodiment, the frame of the transmission mechanism 1 is provided with a tensioning mechanism 45 for tensioning the belt.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (7)

1. leveling style conveyer; Comprise the connecting gear that is coated with feed belt, the front truckle vehicle frame that is provided with cardan wheel and rear truckle vehicle frame; Said front truckle vehicle frame is provided with the hydraulic jack that withstands connecting gear bottom side crossbeam; Captive joint with the crossbeam middle part in said hydraulic jack upper end; The both ends of said crossbeam and the frame of connecting gear are hinged, and two sides of said front truckle vehicle frame and two sides of connecting gear are hinged with connecting rod respectively, it is characterized in that: two sides of said front truckle vehicle frame are provided with the front truckle quill drive; Bottom side, said connecting gear rear portion is provided with the rear truckle quill drive; All be equipped with a horizontal axle sleeve on the both ends of said rear truckle quill drive and the two front truckle quill drives, said horizontal axle sleeve outer wall is captiveed joint with a vertical foot wheel carrier, and the rear and front end downside of said vertical foot wheel carrier is provided with cardan wheel; Also be provided with one on the said front truckle vehicle frame and be used for the hydraulic oil supply system that the modulated pressure jack goes up and down; Said hydraulic oil supply system comprises hydraulic reservoir, Hydraulic Pump and control cock; The oil outlet of said hydraulic reservoir is connected to the oil inlet of Hydraulic Pump through first delivery line; The high pressure oil outlet of said Hydraulic Pump is connected to the oil inlet end of control cock through second delivery line; Oil outlet end warp the 3rd delivery line of said control cock is connected to the oil inlet end of hydraulic jack, and the draining end of said control cock is connected to hydraulic reservoir through the 4th delivery line.

2. leveling style conveyer according to claim 1 is characterized in that, said control cock is a manually actuated control valve.

3. leveling style conveyer according to claim 1; It is characterized in that; Said hydraulic oil supply system also comprises a control circuit, and said control cock is a solenoid directional control valve, and a mouth of said control circuit is connected with control cock through first circuit; Another mouth of said control circuit is connected with hydraulic oil pump with first frequency converter through second circuit, and the signal input part of said control circuit is connected with input keyboard.

4. leveling style conveyer according to claim 1; It is characterized in that; Also be provided with anti-fall guard between said connecting gear and the front truckle vehicle frame; Said anti-fall guard comprises the first hinged pole of an end, second pole and the 3rd pole, and the other end of said first pole is hinged on the side of crossbeam, and the other end of said second pole is hinged on the side of front truckle vehicle frame; Said the 3rd pole is between first pole and second pole; And the other end of said the 3rd pole is arranged in the guide groove, and the other end of said the 3rd pole also is provided with locating groove, and said guide groove is provided with and is used for the ratchet that cooperates with locating groove; Said guide groove is connected on the quill drive of front truckle vehicle frame side through a casing pipe sleeve, also is provided with the reinforcement gusset between the outer end of said quill drive and the front truckle vehicle frame side.

5. leveling style conveyer according to claim 4 is characterized in that, the ratchet that is positioned at front truckle vehicle frame two sides is controlled by a cross bar, and said cross bar is arranged in the guide groove of front truckle vehicle frame two sides, and the one of which end is provided with control handle.

6. leveling style conveyer according to claim 1 is characterized in that the top of said connecting gear is provided with drive roll, and its underpart is provided with driven voller; Said drive roll is directly driven by reducing motor, and said reducing motor is by its rotating speed of second Frequency Converter Control, and the signal input part of said second frequency converter is connected with a control module, and said control module has signal input module.

7. according to claim 3 or 6 described leveling style conveyers, it is characterized in that said control circuit and control module are arranged in the control box with control panel, said input keyboard and signal input module all are arranged on the control panel.

Images