Tray speed reduction structure

Abstract

The utility model relates to the field of tray speed reduction, in particular to a tray speed reduction structure which comprises a cam seat, a blocking rod arranged on the cam seat, a blocking piece arranged at the upper end of the blocking rod and a balance weight assembly used for driving the blocking rod to reset, and the cam seat is provided with a cam groove used for sliding of the lower end of the blocking rod in the length direction. The cam groove comprises a smooth part and a downward sliding part, and the counterweight assembly is located at the end, away from the downward sliding part, of the cam base. The problem of stopping heavy objects is solved, and the possibility that the objects slide on the tray is reduced; the number of electrical elements is small, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tray deceleration, in particular to a tray deceleration structure. BACKGROUND

[0002] The existing tray blocking on the conveying line generally adopts the following two technologies: 1. A standard blocking cylinder is used to stop the tray; 2. The motor of the conveying line is controlled by a frequency converter, and the speed of the conveying motor is reduced by the frequency converter. However, the existing technologies have the following disadvantages: 1. The technology 1 requires compressed air for use, and a sensor is needed to cooperate with the sensing of the position of the tray, and then an electromagnetic valve is used to control the lifting of the blocking cylinder. Therefore, the technology 1 has many electrical elements, and the maintenance cost is high.

[0003] 2. When a heavy object passes through the conveying line, the inertia of the conveying object is large, and although the blocking cylinder has a buffering function, the buffering distance is too short, and the heavy object on the tray is not fixed. Therefore, when the blocking cylinder stops, the heavy object on the tray will still slide forward on the tray due to inertia, and further displacement will occur.

[0004] 3. The technology 2 can only control the deceleration of the motor when the motor of the conveying line is provided with a frequency converter. CONTENT OF THE INVENTION

[0005] In order to solve the problems in the prior art, the present application provides a tray deceleration structure.

[0006] The present application provides a tray deceleration structure, which adopts the following technical solution:

[0007] The tray deceleration structure comprises a cam seat, a blocking rod arranged on the cam seat, a blocking piece arranged on the upper end of the blocking rod, and a counterweight assembly for driving the blocking rod to reset. The cam seat is provided with a cam groove for sliding of the lower end of the blocking rod along the length direction. The cam groove comprises a gentle portion and a sliding portion. The counterweight assembly is located at one end of the cam seat away from the sliding portion.

[0008] By adopting the above technical solution, the cam seat is used to mount the blocking rod. When the tray moves, the blocking piece on the blocking rod blocks the tray. After the tray contacts the blocking piece, the speed of the tray is stably reduced. The tray continues to move and pushes the blocking rod to move along the cam groove. When the blocking rod moves from the gentle portion to the sliding portion, the blocking rod is lowered to the bottom of the tray. The blocking piece contacts the tray and reduces the speed of the tray. When the tray moves out, the counterweight assembly pulls the blocking rod to reset to the end of the gentle portion away from the sliding portion.

[0009] Preferably, the gentle portion is arranged horizontally along the length direction of the cam seat, the sliding portion is arranged obliquely along the length direction of the cam seat, one end of the sliding portion is connected with the gentle portion, and the other end of the sliding portion is arranged obliquely downward.

[0010] The flat section is used for blocking the rod to slow down the tray, and the downward sliding section is used for avoiding the tray after slowing down, so that the tray is conveniently moved out of the slowing-down area.

[0011] Preferably, the blocking piece comprises a mounting shaft arranged at the upper end of the blocking rod and blocking wheels arranged at both ends of the mounting shaft, the rotating direction of the blocking wheels is consistent with the moving direction of the tray, and the mounting shaft is provided with a snap spring for positioning the blocking wheels.

[0012] By adopting the above technical scheme, the mounting shaft is used for mounting the blocking wheels, the blocking wheels are used for reducing the friction between the tray and the blocking rod, when the blocking rod moves to the downward sliding section, the blocking wheels contact the bottom surface of the tray, and the tray drives the blocking wheels to rotate when moving, and the snap spring improves the stability of the blocking wheels on the mounting shaft.

[0013] Preferably, the lower end of the blocking rod is provided with a pin shaft, both sides of the cam seat in the length direction are provided with positioning grooves in communication with the cam grooves, and the pin shaft is provided with a baffle at both ends.

[0014] By adopting the above technical scheme, the pin shaft and the baffle improve the stability of the cam seat when moving, the positioning grooves facilitate the mounting of the baffle on the pin shaft, and the positioning effect of the baffle on the cam seat is improved.

[0015] Preferably, the width of the baffle is wider than that of the positioning groove, and the cam seat is located between the baffles at both ends of the pin shaft.

[0016] By adopting the above technical scheme, the width of the baffle is wider than that of the positioning groove, and the positioning effect of the baffle on the cam seat is improved.

[0017] Preferably, the counterweight assembly comprises a connecting shaft arranged at the lower end of the blocking rod, a connecting rope arranged at both ends of the connecting shaft, a counterweight block arranged at the end of the connecting rope away from the connecting shaft, and an anti-skid assembly arranged on the cam seat and used for positioning the connecting rope.

[0018] By adopting the above technical scheme, the connecting shaft facilitates the connection of one end of the connecting rope to the blocking rod, the counterweight block facilitates the pulling of the blocking rod, and the anti-skid assembly improves the stability of the movement of the connecting rope.

[0019] Preferably, the anti-skid assembly comprises a fixed plate arranged at both sides of the cam seat in the length direction and located at the end of the cam seat away from the downward sliding section, and a pulley arranged on the fixed plate.

[0020] By adopting the above technical scheme, the fixed plate is used for mounting the pulley, and the pulley facilitates the reciprocating movement of the connecting rope and reduces the friction force suffered by the connecting rope when moving.

[0021] Preferably, the end of the cam seat away from the downward sliding section is provided with a fixed seat, the fixed seat is provided with an oil buffer, and the flat section is located at the axial center position of the oil buffer along the length direction.

[0022] By adopting the technical scheme, the fixing seat is used for mounting the oil pressure buffer, the oil pressure buffer reduces the impact force when the cam seat moves, effectively avoids the damage of the cam seat, and prolongs the service life of the cam seat.

[0023] In summary, the blocking rod slows down the tray, when the tray moves to the position of the slowing-down structure, the tray hits the blocking wheel, the blocking rod moves along the cam groove track, that is, the blocking rod moves forward together with the tray, at this time, the blocking rod drives the connecting rope to pull the counterweight up, the tray is slowed down and continues to move forward after absorbing part of kinetic energy by the counterweight; solve the problem that the buffer distance before stopping the heavy object is too short, the object slides on the tray; at the same time, the oil pressure buffer effectively prevents the blocking rod from resetting too fast, and reduces the possibility of damage caused by the blocking rod hitting. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure diagram of a tray slowing-down structure of the present application Figure 1 ;

[0025] Figure 2 is a structure diagram of a tray slowing-down structure of the present application Figure 2 ;

[0026] Figure 3 is a structure diagram of the present application after the tray slows down

[0027] Figure 4 is a schematic diagram of the initial state of the present application when it first contacts the tray.

[0028] Reference signs: 1, cam seat; 11, cam groove; 111, flat part; 112, downward sliding part; 12, positioning groove; 2, blocking rod; 3, blocking piece; 31, mounting shaft; 32, blocking wheel; 4, counterweight assembly; 41, connecting shaft; 42, connecting rope; 43, counterweight; 44, anti-skid assembly; 441, fixed plate; 442, pulley; 5, circlip; 6, pin shaft; 7, baffle; 8, fixing seat; 9, oil pressure buffer. DETAILED DESCRIPTION

[0029] The present application will be further described below in combination with the accompanying drawings Figures 1-4 The present application will be further described below in combination with the accompanying drawings

[0030] The present application discloses a tray slowing-down structure. Referring to Figure 1 and Figure 2, including cam seat 1, installed on the cam seat 1 blocking bar 2, installed on the blocking bar 2 and the tray contact blocking piece 3 and installed on the cam seat 1 and used to drive the blocking bar 2 reset weight assembly 4. Cam seat 1 along the length direction of the cam groove 11 with the tray moving direction consistent, the lower end of the blocking bar 2 in the cam groove 11, the lower end of the blocking bar 2 corner is rounded, reduce the friction of the blocking bar 2 in the cam groove 11 movement.

[0031] Referring to Figure 1 And Figure 2 , the cam groove 11 includes along the length direction of the cam seat 1 extension gentle part 111 and located in the gentle part 111 away from the weight assembly 4 one end of the slide down 112, the slide down 112 one end with the gentle part 111 connection, the other end of the slide down 112 is inclined downward. Gentle part 111 along the length direction of the cam seat 1 horizontal opening, the cam seat 1 moves to the slide down 112, slide down, avoid the tray, facilitate the tray out.

[0032] Referring to Figure 1 And Figure 2 , the weight assembly 4 is located in the cam seat 1 away from the slide down 112 one end, the weight assembly 4 includes the connecting shaft 41 installed in the lower end of the blocking bar 2, the connecting rope 42 installed in both ends of the connecting shaft 41, the weight block 43 installed on the connecting rope 42 and the anti slip assembly 44 installed on the cam seat 1, the connecting rope 42 one end fixed in the connecting shaft 41 end, the other end of the connecting rope 42 and the weight block 43 connection, the anti slip assembly 44 between the weight block 43 and the connecting shaft 41, improve the stability of the connecting rope 42 movement. Anti slip assembly 44 includes fixedly installed in the length direction of the cam seat 1 both sides of the fixed plate 441 and fixedly installed on the fixed plate 441 pulley 442, the fixed plate 441 is located in the cam seat 1 away from the slide down 112 one end, facilitate the weight block 43 pull the blocking bar 2 reset.

[0033] Referring to Figure 1 And Figure 2 , when the weight assembly 4 pull the cam seat 1 reset, in order to reduce the possibility of the cam seat 1 by impact wear. Fixedly installed in the cam seat 1 away from the slide down 112 one end of the fixed seat 8, the fixed seat 8 on the installation of the oil buffer 9, the gentle part 111 is located in the shaft center position of the oil buffer 9, when the blocking bar 2 reset by the weight block 43 tension, the oil buffer 9 effectively prevent the blocking bar 2 reset speed too fast, avoid the result damage caused by the impact of the blocking bar 2.

[0034] Referring to Figure 1 And Figure 2The blocking piece 3 comprises a mounting shaft 31 mounted on the upper end of the blocking rod 2 and blocking wheels 32 mounted on both ends of the mounting shaft 31, and a circlip 5 for positioning the blocking wheels 32 is further mounted on the mounting shaft 31, which improves the stability of the blocking wheels 32 on the mounting shaft 31. The lower end of the blocking rod 2 is provided with a pin shaft 6, and the length direction of the cam seat 1 is provided with positioning grooves 12 for the pin shaft 6 to pass through, the positioning grooves 12 are communicated with the cam grooves 11 and are consistent with the moving path of the pin shaft 6. In order to improve the stability of the blocking rod 2 moving on the cam seat 1, the pin shaft 6 is provided with a baffle 7 at both ends, and the width of the baffle 7 is wider than that of the positioning groove 12; the cam seat 1 is located between the baffles 7 at both ends of the pin shaft 6, and the baffles 7 at both sides of the pin shaft 6 effectively improve the stability of the pin shaft 6 on the cam seat 1, and improve the stability of the lower end of the blocking rod 2 moving on the cam seat 1.

[0035] The implementation principle of the tray deceleration structure is as follows: Figure 3 and Figure 4 The deceleration structure is installed below the conveying surface, and only the blocking wheels 32 are higher than the conveying surface. When the tray moves to the deceleration structure area, the tray first collides with the blocking wheels 32, the tray moves to drive the blocking rod 2 to move along the length direction of the gentle part 111, and the blocking rod 2 moves to drive the connecting rope 42 to pull the counterweight 43 to rise. When the blocking rod 2 moves to the downward sliding part 112, the blocking rod 2 is inclined to slide downward, drives the blocking wheels 32 to slide to the lower side of the tray, and the tray is affected by the counterweight 43 in the running process and absorbs part of the kinetic energy, and continues to move forward at a deceleration. At this time, the tray moves out of the deceleration structure area, the counterweight 43 pulls the blocking rod 2 to reset, the blocking rod 2 moves from the downward sliding part 112 to the gentle part 111, and contacts the oil pressure buffer 9. The oil pressure buffer 9 effectively prevents the resetting speed of the blocking rod 2 from being too fast, reduces the possibility of damage of the blocking rod 2, and prolongs the service life of the blocking rod 2. The application effectively solves the problem of stopping large heavy objects, and reduces the possibility of sliding of the objects on the tray. At the same time, the application has few electrical elements and low maintenance cost.

[0036] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A pallet deceleration structure, characterized in that: The device includes a cam seat (1), a blocking rod (2) disposed on the cam seat (1), a blocking member (3) disposed on the upper end of the blocking rod (2), and a counterweight assembly (4) for driving the blocking rod (2) to reset. The cam seat (1) has a cam groove (11) along its length for the lower end of the blocking rod (2) to slide. The cam groove (11) includes a smooth part (111) and a sliding part (112). The counterweight assembly (4) is located at the end of the cam seat (1) away from the sliding part (112).

2. The pallet deceleration structure according to claim 1, characterized in that: The smooth section (111) is horizontally arranged along the length direction of the cam seat (1), and the sliding section (112) is inclined along the length direction of the cam seat (1). One end of the sliding section (112) is connected to the smooth section (111), and the other end of the sliding section (112) is inclined downward.

3. The pallet deceleration structure according to claim 1, characterized in that: The blocking component (3) includes a mounting shaft (31) disposed on the upper end of the blocking rod (2) and blocking wheels (32) disposed at both ends of the mounting shaft (31). The rotation direction of the blocking wheels (32) is consistent with the movement direction of the tray. The mounting shaft (31) is provided with a retaining ring (5) for positioning the blocking wheels (32).

4. The pallet deceleration structure according to claim 1, characterized in that: The lower end of the blocking rod (2) is provided with a pin (6), and the two sides of the cam seat (1) in the length direction are provided with positioning grooves (12) that communicate with the cam groove (11), and the two ends of the pin (6) are provided with baffles (7).

5. The pallet deceleration structure according to claim 4, characterized in that: The width of the baffle (7) is wider than the width of the positioning groove (12), and the cam seat (1) is located between the baffles (7) at both ends of the pin (6).

6. The pallet deceleration structure according to claim 1, characterized in that: The counterweight assembly (4) includes a connecting shaft (41) located at the lower end of the stop bar (2), connecting ropes (42) located at both ends of the connecting shaft (41), a counterweight block (43) located at the end of the connecting rope (42) away from the connecting shaft (41), and an anti-slip assembly (44) located on the cam seat (1) for positioning the connecting rope (42).

7. A pallet deceleration structure according to claim 6, characterized in that: The anti-slip component (44) includes a fixing plate (441) disposed on both sides of the cam seat (1) along its length and located at the end of the cam seat (1) away from the sliding part (112) and a pulley (442) disposed on the fixing plate (441).

8. The pallet deceleration structure according to claim 1, characterized in that: The cam seat (1) is provided with a fixed seat (8) at one end away from the sliding part (112), and a hydraulic buffer (9) is provided on the fixed seat (8). The smooth part (111) is located at the center of the hydraulic buffer (9) along its length direction.

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