Novel stirring shaft sealing structure of concrete pump truck

Abstract

The utility model discloses a novel concrete pump truck stirring shaft sealing structure which comprises a machine frame, a first fixing rod is fixedly connected to the machine frame, a motor is fixedly connected to the first fixing rod, a sealing assembly is fixedly connected in the machine frame, the sealing assembly comprises a second fixing plate which is in threaded connection to the machine frame through a bolt, and the second fixing plate is fixedly connected to the machine frame. A second rotating plate is rotatably connected to the second fixing plate, a rotating shaft is fixedly connected to the second rotating plate and the output end of the motor, a threaded rod is fixedly connected to the rotating shaft, a sleeve is in threaded connection to the threaded rod, a first rotating plate is fixedly connected to the sleeve, and a first fixing plate is fixedly connected to the interior of the rack; a sliding rod is connected to the first rotating plate in a sliding mode, and the sliding rod is fixedly connected with the second rotating plate. The cleaning assembly is installed, through relative rotation of the sealing ring and the cleaning ring, most of concrete marl on the sealing ring is cleaned, the concrete marl on the sealing ring is prevented from being solidified, and the service life of the sealing ring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of agitator shaft sealing, in particular to a novel agitator shaft sealing structure of a concrete pump truck. Background Art

[0002] The agitator shaft seal structure of a concrete pump truck is simple in structure, easy to manufacture, suitable for non-corrosive and weakly corrosive media, and allows for regular maintenance. It consists of a bottom ring, body, oil ring, packing, studs, gland, and oil cup. Under the pressure of the gland, the packing exerts radial pressure on the surface of the agitator shaft, forming an extremely thin wave film, which not only lubricates the agitator shaft but also prevents fluid from escaping or infiltrating, achieving the purpose of sealing.

[0003] However, in the actual working process, since the agitator will have a certain degree of wear during use, the shaft seal should be cleaned and inspected regularly, the dirt on the shaft seal should be cleaned, and the shaft seal should be carefully checked for aging, cracks, deformation, etc., and the wear and leakage of the agitator shaft sealing structure is one of the common causes of failure. The quality and supply of lubricating oil directly affect the sealing effect. If the lubricating oil quality is poor or the supply is insufficient, it will lead to increased wear of the seal and increased gap, thereby causing leakage. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a new type of sealing structure for the mixing shaft of a concrete pump truck.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is fixedly mounted on the driving member, and the cam is mounted on a link cam of the driving member, wherein the link cam is connected to the drive member by a threaded connection to the drive member, and the cam is connected to the transmission gear of the driving member.

[0007] Preferably, a cleaning assembly is installed on the frame, and the cleaning assembly includes a cleaning ring fixedly connected to the fixed plate 1, and limiting grooves are provided on the fixed plate 2 and the rotating plate 2, and limiting rods are embedded in the limiting grooves. A nozzle is fixedly connected in the frame, and a fixed rod 2 is fixedly connected in the frame, and a push switch is installed on the fixed rod 2. A drainage groove is provided on the frame.

[0008] Preferably, an oil delivery assembly is installed in the sealing assembly, and the oil delivery assembly includes an oil passage groove 1 opened on the fixed plate 2 and an oil passage groove 2 opened on the sleeve, and the rotating plate 1 and the rotating plate 2 are fixedly connected by an oil delivery cloth.

[0009] Preferably, the nozzle is a liquid pressurized nozzle.

[0010] Preferably, a soft brush is fixedly connected to the cleaning ring.

[0011] Preferably, a sealing ring is fixedly connected to the sealing ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] First, the equipment is equipped with a cleaning assembly. Through the relative rotation of the sealing ring and the cleaning ring, most of the concrete mud on the sealing ring is cleaned and the concrete mud on the sealing ring is prevented from solidifying, thereby extending the service life of the sealing ring. In addition, the sealing assembly of the equipment is easy to disassemble, has a simple structure and is low in cost.

[0014] Secondly, the equipment is equipped with an oil delivery component to ensure sufficient lubricating oil supply, greatly simplifying the cost of lubricating oil supply and preventing the occurrence of insufficient lubricating oil supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a new type of mixing shaft sealing structure of a concrete pump truck proposed by the present utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of a new type of mixing shaft sealing structure of a concrete pump truck proposed by the present invention.

[0017] Figure 3 This is a schematic diagram of the sealing component structure of a new type of mixing shaft sealing structure of a concrete pump truck proposed by the present invention.

[0018] Figure 4 This is a schematic diagram of the oil delivery component structure of the agitator shaft sealing structure of a new concrete pump truck proposed by the utility model.

[0019] In the figure: 1 frame, 2 fixing rod 1, 4 sealing assembly, 41 bolt, 42 rotating plate 1, 43 fixing plate 1, 44 rotating plate 2, 45 sleeve, 46 fixing plate 2, 47 sliding rod, 48 sealing ring, 49 threaded rod, 5 motor, 6 cleaning assembly, 61 limiting rod, 62 nozzle, 63 cleaning ring, 64 push switch, 65 drainage groove, 66 fixing rod 2, 67 limiting groove, 7 stirring rod, 8 stirring shaft, 9 oil feeding mechanism, 91 oil feeding cloth, 92 oil trough 1, 93 oil trough 2, 10 rotating shaft. DETAILED DESCRIPTION

[0020] Reference Figures 1-4 A new type of mixing shaft sealing structure for a concrete pump truck includes a frame 1, a fixed rod 2 is fixedly connected to the frame 1, a motor 5 is fixedly connected to the fixed rod 2, a sealing assembly 4 is fixedly connected inside the frame 1, the sealing assembly 4 includes a fixed plate 2 46 threadedly connected to the frame 1 by a bolt 41, a rotating plate 2 44 is rotatably connected to the fixed plate 2 46, a rotating shaft 10 is fixedly connected to the output end of the motor 5, a threaded rod 49 is fixedly connected to the rotating shaft 10, a sleeve 45 is threadedly connected to the threaded rod 49, a rotating plate 1 42 is fixedly connected to the sleeve 45, a fixed plate 1 43 is fixedly connected inside the frame 1, and the rotating plate 1 42 and the fixed plate 1 are fixedly connected. The end faces of 43 are against each other, and a sliding rod 47 is slidably connected to the rotating plate 1 42, and the sliding rod 47 is fixedly connected to the rotating plate 2 44. The threaded rod 49 passes through the rotating plate 1 42 and the fixed plate 1 43 and is fixedly connected to the stirring shaft 8. A sealing ring 48 is fixedly connected to the rotating plate 1 42, and the sealing ring 48 is located between the stirring shaft 8 and the fixed plate 1 43. A plurality of stirring rods 7 are fixedly connected to the stirring shaft 8. When the limiting rod 61 is embedded in the limiting groove 67, under the limitation of the sliding rod 47, the motor 5 can drive the rotating plate 1 42 to move until the sealing ring 48 and the cleaning ring 63 are against each other. The limiting rod 61 is removed, and the rotating plate 1 42 and the rotating plate 2 4 rotate with the stirring shaft 8.

[0021] A cleaning assembly 6 is installed on the frame 1. The cleaning assembly 6 includes a cleaning ring 63 fixedly connected to the fixed plate 1 43. A limiting groove 67 is provided on the fixed plate 2 46 and the rotating plate 2. A limiting rod 61 is embedded in the limiting groove 67. A nozzle 62 is fixedly connected to the frame 1. A fixed rod 2 66 is fixedly connected to the frame 1. A push switch 64 is fixedly connected to the fixed rod 2 66. A drainage groove 65 is provided on the frame 1. When the rotating plate 1 42 and the rotating plate 2 4 rotate with the stirring shaft 8, the cleaning ring 63 and the sealing ring 48 are abutted against each other, cleaning most of the concrete mud on the sealing ring and preventing the concrete mud on the sealing ring from solidifying. When the sealing ring needs to be cleaned, the limit rod 61 is embedded in the limit groove 67, and then the motor 5 is reversed. Under the limit of the slide bar 47, the motor 5 can drive the rotating plate 42 to move in the opposite direction until the rotating plate 42 and the push switch 64 are offset. A valve is installed in the nozzle 62. The push switch 64 and the nozzle 62 valve are electrically connected through a wire. The nozzle 62 is connected to the water tank of the pump truck through a water pipe. The movement of the rotating plate 42 can push the switch 64 to start the nozzle 62. A spring is installed in the push switch 64. When the push switch 64 and the rotating plate 42 are no longer offset, the push switch 64 can be reset to close the nozzle 62.

[0022] An oil delivery assembly 9 is installed in the sealing assembly 4. The oil delivery assembly 9 includes an oil groove 1 92 opened on the fixed plate 2 46 and an oil groove 2 93 opened on the sleeve 45. The rotating plate 1 42 and the rotating plate 2 44 are fixedly connected by an oil delivery cloth 91. The oil delivery cloth 91 uses a waterproof and oil-proof cloth. Workers can add lubricating oil to the oil groove 1 92. The lubricating oil passes through the closed space formed by the oil delivery cloth 91 and the rotating plates 1 42 and 2 44, and is delivered to the oil groove 93 by the threaded rod 49, and then to the connection between the rotating plate 1 42 and the sleeve 45. The connection between the rotating plate 1 42 and the sleeve 45 is also the connection between the sleeve 45 and the stirring shaft 8.

[0023] The nozzle 62 uses a liquid pressurized nozzle with a certain water pressure, which can make the cleaning effect better.

[0024] A soft brush is fixedly connected inside the cleaning ring 63 to enhance the cleaning effect.

[0025] A sealing ring is fixedly connected to the sealing ring 48 to enhance the sealing effect.

[0026] In the present invention, the motor 5 is started, and the worker pulls the limit rod 61 out of the limit groove 67. The motor 5 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the threaded rod 49 to rotate, the threaded rod 49 drives the stirring shaft 8 and the sleeve 45 to rotate, and the stirring shaft 8 drives the stirring rod 7 to rotate to complete the stirring work. This is the existing technology and will not be described in detail. At this time, the sealing ring 48 and the cleaning ring 63 and the fixed plate 43 are tightly attached. When the limit rod 61 is not limited, the sleeve 45 drives the rotating plate 42 to rotate, and the rotating plate 42 drives the rotating plate 2 44 to rotate through the sliding rod 47. At this time, The cleaning ring 63 and the sealing ring 48 rotate relative to each other, and the cleaning ring 63 removes large pieces of mud and dust on the sealing ring 48 to prevent the mud and dust from solidifying. After the stirring is completed, the motor 5 is turned off, the limit rod 61 is embedded in the limit groove 67, and the motor 5 is started to reverse. At this time, the rotating plate 2 44 cannot rotate due to the cooperation of the limit rod 61 and the limit groove 67. Under the limit of the sliding rod 47, the threaded rod 47 drives the rotating plate 1 42 to move, and the rotating plate 1 42 drives the push switch 64 to move. The push switch 64 drives the nozzle 62 to start. At this time, the motor 5 is paused to complete the cleaning of the sealing ring 48;

[0027] If lubricating oil is needed for the stirring shaft 8, the worker adds lubricating oil at the entrance of the oil groove 92, and the threaded rod 49 allows the lubricating oil to pass through the oil cloth 91 into the oil groove 93, and then to the connection between the rotating plate 42 and the sleeve 45, completing the work of lubricating the rack.

Claims

1. A new type of mixing shaft sealing structure for a concrete pump truck, comprising a frame (1), characterized in that: The frame (1) is fixedly connected to a fixing rod (2), the fixing rod (2) is fixedly connected to a motor (5), the frame (1) is fixedly connected to a sealing assembly (4), the sealing assembly (4) comprises a fixing plate (46) threadedly connected to the frame (1) via a bolt (41), the fixing plate (46) is rotatably connected to a rotating plate (44), the output end of the motor (5) is fixedly connected to a rotating shaft (10), the rotating shaft (10) is fixedly connected to a threaded rod (49), the threaded rod (49) is threadedly connected to a sleeve (45), the sleeve (45) is fixedly connected to the rotating plate One (42), a fixed plate one (43) is fixedly connected to the frame (1), and the rotating plate one (42) and the end face of the fixed plate one (43) are against each other, a sliding rod (47) is slidably connected to the rotating plate one (42), and the sliding rod (47) and the rotating plate two (44) are fixedly connected, the threaded rod (49) passes through the rotating plate one (42) and the fixed plate one (43) and is fixedly connected to the stirring shaft (8), a sealing ring (48) is fixedly connected to the rotating plate one (42), and the sealing ring (48) is located between the stirring shaft (8) and the fixed plate one (43), and a plurality of stirring rods (7) are fixedly connected to the stirring shaft (8).

2. The new concrete pump truck agitator shaft sealing structure according to claim 1 is characterized in that: A cleaning assembly (6) is installed on the frame (1), and the cleaning assembly (6) includes a cleaning ring (63) fixedly connected to the fixed plate 1 (43). The fixed plate 2 (46) and the rotating plate 2 (44) are both provided with a limiting groove (67), and a limiting rod (61) is embedded in the limiting groove (67). A nozzle (62) is fixedly connected to the frame (1), a fixed rod 2 (66) is fixedly connected to the frame (1), and a push switch (64) is installed on the fixed rod 2 (66). A drainage groove (65) is provided on the frame (1).

3. The agitator shaft sealing structure of a new concrete pump truck according to claim 1 is characterized in that: An oil delivery assembly (9) is installed in the sealing assembly (4), and the oil delivery assembly (9) includes an oil passage groove (92) opened on the fixed plate (46) and an oil passage groove (93) opened on the sleeve (45). The rotating plate (42) and the rotating plate (44) are fixedly connected by an oil delivery cloth (91).

4. The new concrete pump truck agitator shaft sealing structure according to claim 2 is characterized in that: The nozzle (62) uses a liquid pressurized nozzle.

5. The new concrete pump truck agitator shaft sealing structure according to claim 2 is characterized in that: A soft brush is fixedly connected inside the cleaning ring (63).

6. The novel sealing structure for the agitator shaft of a concrete pump truck according to claim 2 is characterized in that: A sealing ring is fixedly connected to the sealing ring (48).

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