CN202922759U - Unloading door device for twin-horizontal shaft stirrer - Google Patents

Abstract

The utility model discloses a discharge door device for a double-horizontal shaft mixer, which comprises a drive transmission mechanism, a discharge door body and a door liner, the drive transmission mechanism comprises a drive part, a rocker and a connecting rod, and the drive part and one end of the rocker Hinged, the rocker is rotated and installed on the side wall of the twin-shaft mixer, and the other end of the rocker is hinged with one end of the connecting rod; the discharge door body includes the door panel, the main triangle, the side triangle, the main shaft of the discharge door and the supporting rotating short shaft, and the side triangle The quantity is two, the side triangles are respectively fixed at both ends of the door panel, the main triangle is fixed inside the door panel, the main shaft of the discharge door passes through the main triangle and the side triangle, and one end of the discharge door main shaft is hinged with the other end of the connecting rod to support the short axis of rotation The side gussets are penetrated and the door liner is fixed on the outside of the door panel. The utility model can eliminate the mixing dead zone, ensure that all materials can participate in the mixing and mixing, realize that the material gradation does not deviate from the design gradation, improve the concrete mixing quality, and can easily open the discharge door for timely cleaning after a power failure.

Description

A discharge door device for a twin-shaft mixer

technical field

The utility model belongs to the technical field of concrete mixers, in particular to a discharge door device for twin-shaft mixers.

Background technique

The twin-shaft mixer is a forced mixer with the advantages of good mixing quality, high production efficiency and strong adaptability. It has been widely used in various water conservancy, roads, bridges and other industrial and civil construction projects. It is extremely important Construction Equipment. As one of the key components of the twin-shaft mixer, the discharge door directly affects the production efficiency of the twin-shaft mixer, the product quality of the concrete, the life of the equipment and the personal safety of the employees. The discharge door devices of the existing twin-shaft mixers are all arranged at the bottom of the mixer cylinder, and are rotated and sealed with the discharge port at the bottom of the double circular groove-shaped cylinder of the mixer. The main components are the driving device (oil cylinder) 20, the discharge door body 21, The discharge door main shaft 23 and the arc liner 24 are composed of four parts (as shown in Figure 1), wherein the upper top plate of the discharge door body 21 is an arc plate, and the arc liner 24 is fixedly installed on the arc of the discharge door body 21. On the plate, the discharge door body 21 is arranged on the discharge door main shaft 23, and the rotation center line of the discharge door main shaft 23 is directly below the symmetrical center of the discharge port at the bottom of the double circular groove-shaped cylinder. The main shaft of the discharge door is set on the bearing mounting plate, the bearing mounting plate is fixed on the side wall of the twin-shaft mixer, and a rocker arm 25 is also arranged on the main shaft of the discharge door, and the rocker arm 25 is fixed on the main shaft 23 of the discharge door , the oil cylinder is hinged on the side wall of the twin-shaft mixer and is hinged with the rocker arm 25. By controlling the expansion and contraction of the oil cylinder, the rocker arm 25 is driven to rotate, thereby driving the main shaft 23 of the discharge door to rotate, and then adjusting the rotation angle of the discharge door body 21. On and off. The characteristic of this structure is that the arc-shaped plate of the discharge door body is tightly wedged with the outer circle at the outlet of the double-circular groove-shaped cylinder of the mixer. , there is a large area above the arc lining plate 24, which is the place where the stirring blades cannot be stirred. This area is the stirring dead zone 22 of the twin-shaft mixer, and the raw materials stored in the stirring dead zone 22 are all the original materials during the initial feeding. , does not participate in the stirring and mixing effect, which not only changes the mixing gradation of the material design, but also reduces the mixing quality of the concrete, and when the mixing is completed and unloaded, the material in the mixing dead zone 22 is mixed into the already mixed concrete, and then The mixing quality of the concrete is reduced at one time, which seriously affects the mixing quality of the concrete, which in turn affects the construction quality. When a power failure occurs in the workplace, it is difficult to manually open the discharge door body 21 due to the wedge-tight sealing method of the discharge door, and the materials in the mixer cannot be cleaned up in time. If the materials accumulate in the mixer for a long time, it will cause agglomeration. The status quo that cannot be cleaned up later.

Utility model content

The purpose of the utility model is to overcome the shortcomings in the prior art, and provide a discharge door device for a twin-shaft mixer, which has a simple structure, reasonable design, and convenient operation, and can eliminate the problems caused by the existing discharge door device. The mixing dead zone ensures that all the materials can participate in the mixing and mixing, so that the gradation of the materials involved in the mixing does not deviate from the design gradation, thereby improving the mixing quality of the concrete. After a power failure, the discharge door can be easily opened manually, making the twin-shaft mixer be cleaned in a timely manner.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a discharge door device for a twin-shaft mixer, which is characterized in that it includes a drive transmission mechanism, a discharge door body and a door liner, and the drive transmission mechanism includes Drive, rocker and connecting rod, the drive is a hydraulic cylinder or cylinder, one end of the drive is fixed on the side wall of the twin-shaft mixer through the base, and the other end of the drive is hinged to one end of the rocker , the rocker is installed on the side wall of the twin-shaft mixer through the rotation of the pin shaft, and the other end of the rocker is hinged with one end of the connecting rod; the discharge door body includes a door panel, a main triangle, a side triangle, a discharge The main shaft of the door and the short axis of the supporting rotation, the cross-sectional shape of the door panel is an inverted V shape, the number of the side triangles is two, and the second through hole and the third through hole are opened on the side triangle, The side triangular plates are respectively fixed at both ends of the door panel, the main triangular plate is provided with a first through hole, the main triangular plate is fixed in the door panel, and the main shaft of the discharge door passes through the second through hole and the first through hole And it is fixed with the main triangular plate and the side triangular plate, one end of the main shaft of the discharge door is hinged with the other end of the connecting rod, the number of the supporting rotating short shafts is two, and the two supporting rotating short shafts respectively pass through two The third through hole on the side triangular plate of the block is fixed with the side triangular plate. The supporting rotating short shaft is sleeved on the bearing with seat fixed on the side wall of the twin-shaft mixer. The number of the door liners is multiple. The door liner is fixed on the outer side of the door panel by bolts and nuts.

The above-mentioned discharge door device for a twin-shaft mixer is characterized in that the distance between one end of the rocker connected to the driving member and the pin shaft is section AB, and the distance between one end of the rocker connected with the connecting rod is The distance between the pin shafts is section CB, and the length of section AB is greater than that of section CB.

The above-mentioned discharge door device for a twin-shaft mixer is characterized in that: the two side triangular plates are respectively welded to the two ends of the door panel, and the main triangular plate is welded in the door panel.

The above-mentioned discharge door device for a twin-shaft mixer is characterized in that: the number of the main triangular plates is multiple, and the multiple main triangular plates are evenly arranged.

The above-mentioned discharge door device for a twin-shaft mixer is characterized in that: the main shaft of the discharge door passes through the second through hole and the first through hole and is welded to the main triangular plate and the side triangular plate, and the two supporting The short axis of rotation respectively passes through the third through holes on the two side triangle plates and is welded with the side triangle plates.

The above-mentioned discharge door device for a twin-shaft mixer is characterized in that the shape of the door liner is rectangular.

Compared with the prior art, the utility model has the following advantages:

1. The utility model has simple structure, reasonable design and convenient operation.

2. The opening and closing of the discharge door device of the utility model no longer revolves around the main shaft of the discharge door installed directly below the symmetry center of the discharge port at the bottom of the double circular groove cylinder, and then drives the discharge door body The arc-shaped plate is tightly sealed with the outer circle at the outlet of the double-circular grooved cylinder of the mixer. Instead, the rotation center of the discharge door is placed on the side of the outlet, and the inverted V-shaped door is used instead of the original one. There are curved plates, which can well eliminate the dead zone of stirring caused by the original structure.

3. The utility model fixedly installs the door liner made of wear-resistant material on the door panel to protect the door panel and prolong the service life of the door panel.

4. The utility model uses a four-bar linkage mechanism to place the driving part (hydraulic cylinder or air cylinder) on the side wall of the double-shaft mixer above the discharge door body. The structure is simple and compact, and it is easy to observe and maintain. By adjusting the connecting rod The length and the fixed position of the hinge, especially the length ratio of the two sections of the rocker (that is, the AB section and the CB section), enable the driving member to provide a small power to close the discharge door and seal it well; because the discharge door is closed when it is closed The required force is much greater than the force required for opening, so the structural characteristics of the driving part’s thrust force is greater than the pulling force are fully utilized. When the piston rod of the driving part is extended, the discharge door is closed, which is more economical and applicable.

5. When the utility model is in use, when a power failure occurs in the workplace, the self-locking performance of the driving part ensures that the discharge door will not be automatically opened to ensure the safety of the staff. Due to the gravity effect, the discharge door can be easily opened manually, and the materials in the mixer can be cleaned up in time to prevent the materials from accumulating in the mixer for a long time and agglomerating, resulting in the situation that cannot be cleaned.

6. The utility model can ensure that all materials can participate in stirring and mixing, and realize that the gradation of the materials participating in the agitation does not deviate from the design gradation, thereby improving the mixing quality of concrete.

Below by accompanying drawing and embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is a structural schematic diagram of a discharge door device for an existing twin-shaft mixer.

Fig. 2 is a schematic diagram of the connection relationship between the discharge door body and the door liner of the utility model.

FIG. 3 is an exploded view of FIG. 2 .

Fig. 4 is a diagram of the usage state of the utility model installed on a twin-shaft mixer.

Explanation of reference signs:

1—bolt; 2—door liner; 3—nut;

4—discharge door spindle; 5-1—main triangular plate; 5-11—first through hole;

5-2—side triangular plate; 5-21—second through hole; 5-22—third through hole;

6—Support rotating short shaft; 7—Door panel; 8—Driver;

9—discharging door body; 10—connecting rod; 11—rocker;

12- side wall of twin-shaft mixer; 13- pin shaft; 20- driving device;

21—discharging door body; 22—stirring dead zone; 23—discharging door spindle;

24-arc liner; 25-rocker arm.

Detailed ways

As shown in Figures 2 to 4, the utility model includes a driving transmission mechanism, a discharge door body 9 and a door liner 2, and the driving transmission mechanism includes a driving member 8, a rocker 11 and a connecting rod 10, and the driving member 8 is a hydraulic cylinder or air cylinder, one end of the driving member 8 is fixed on the side wall 12 of the twin-shaft mixer through the base, the other end of the driving member 8 is hinged to one end of the rocker 11, and the rocker 11 is connected by a pin The shaft 13 is rotatably mounted on the side wall 12 of the twin-shaft mixer, and the other end of the rocker 11 is hinged to one end of the connecting rod 10; the discharge door 9 includes a door panel 7, a main triangle 5-1, and a side triangle 5 -2. The main shaft 4 of the discharge door and the supporting rotating short shaft 6, the cross-sectional shape of the door panel 7 is an inverted V shape, the number of the side triangular plates 5-2 is two, and the upper opening of the side triangular plates 5-2 is There are a second through hole 5-21 and a third through hole 5-22, the two side triangular plates 5-2 are respectively fixed on the two ends of the door panel 7, and the first through hole is opened on the main triangular plate 5-1 5-11, the main triangular plate 5-1 is fixed in the door panel 7, the main shaft 4 of the discharge door passes through the second through hole 5-21 and the first through hole 5-11 and is connected with the main triangular plate 5-1 and the side The triangular plates 5-2 are all fixed, one end of the discharge door main shaft 4 is hinged with the other end of the connecting rod 10, the number of the supporting rotating short shafts 6 is two, and the two supporting rotating short shafts 6 respectively pass through The third through hole 5-22 on the two side triangular plates 5-2 is fixed with the side triangular plates 5-2, and the supporting rotating short shaft 6 is sleeved on the bearing with seat fixed on the side wall 12 of the twin-shaft mixer , the number of the door liner 2 is multiple, and the door liner 2 is fixed on the outer side of the door panel 7 by bolts 1 and nuts 3 .

As shown in Figure 4, preferably, the distance between one end of the rocker 11 connected to the driving member 8 and the pin shaft 13 is section AB, and the distance between the one end of the rocker 11 connected with the connecting rod 10 and the pin shaft 13 The distance between them is section CB, and the length of section AB is greater than that of section CB. In this embodiment, the rocker 11, the connecting rod 10, the discharge door body 9 and the side wall 12 of the twin-shaft mixer form a four-link mechanism. When the length of the AB section is greater than the length of the CB section, the mechanism is a The labor-saving four-link mechanism can reduce the required output power of the driving part 8, so that the driving part 8 can provide a small force to close the discharge door tightly, which is more economical and applicable. In the specific production process, according to the width of the discharge door and the size of the stirring dead zone, firstly determine the distance between the main shaft 4 of the discharge door and the supporting rotating short shaft 6, and then according to the two limit states of opening and closing of the discharge door, then Determine the angle required for the discharge door body 9 to rotate around the supporting rotating short axis 6, and then determine the relationship between the position of the pin shaft 13, the length of the connecting rod 10 and the CB section by adjusting the three, so that the discharge door can be realized. body 9 around the supporting rotation minor axis 6 required rotation angle.

In this embodiment, the two side triangles 5-2 are respectively welded to the two ends of the door panel 7, and the main triangle 5-1 is welded in the door panel 7; the main triangle 5-1 and the side triangle 5-2 are all connected to the door panel 7 is matched and welded on the door panel 7, and passes through the second through hole 5-21 and the first through hole 5-11 through the discharge door main shaft 4 and is welded and fixed with the main triangular plate 5-1 and the side triangular plate 5-2, so that The rigidity of the door panel 7 is better enhanced to ensure good sealing of the discharge door when it is closed, and to ensure a long service life of the discharge door body 9 .

As shown in FIG. 3 , there are multiple main triangular plates 5 - 1 , and the multiple main triangular plates 5 - 1 are evenly arranged.

In this embodiment, the main shaft 4 of the discharge door passes through the second through hole 5-21 and the first through hole 5-11 and is welded with the main triangular plate 5-1 and the side triangular plate 5-2. The short rotating shafts 6 respectively pass through the third through holes 5-22 on the two side triangular plates 5-2 and are welded with the side triangular plates 5-2.

As shown in Figure 2 and Figure 3, the shape of the door liner 2 is rectangular, the door liner 2 is a wearing part, made of wear-resistant materials, the door liner 2 is on the surface of the door panel 7, and it is also used when stirring The blade stirs the area where the friction of the discharge door is intense during the material movement. The door liner 2 is used to protect the door panel 7. After a period of use, when the door liner 2 is severely worn or damaged, only the door liner 2 needs to be replaced. , without integral replacement, thereby increasing the service life of the discharge door body 9 .

Combined with Fig. 4, the working principle of the utility model is: when in use, the supporting rotating short shaft 6 is installed on the side wall 12 of the twin-shaft mixer through the bearing with seat, and the opening and closing of the discharge door is driven by the main shaft 4 of the discharge door. Drive the entire discharge door body 9 to rotate around the supporting rotating short shaft 6, thereby realizing the opening and closing of the discharge door. In Fig. 4, the state when the utility model discharge door device is fully closed is represented by a solid line, and in Fig. 4, the state when the utility model discharge door device is fully opened is represented by a dotted line, and the driver 8 is driven by the extension of the piston rod The rocker 11 rotates around the pin shaft 13, and the rocker 11 then drives the connecting rod 10 to move to the right, and the connecting rod 10 then pushes the discharge door body 9 to rotate upward around the supporting rotating short axis 6 to close the discharge door. In the closed state, the discharge door device occupies the stirring dead zone of the original discharge door, thereby eliminating the stirring dead zone and improving the stirring quality. Due to the large force required to close the discharge door, the structural characteristics of the hydraulic cylinder’s thrust greater than the pull are fully utilized, and the thrust of the hydraulic cylinder is used to close the discharge door; when a power failure occurs in the workplace, the hydraulic cylinder can be relieved. In this way, the discharge door can be easily opened, and the materials in the mixer can be cleaned up in time to prevent the materials from accumulating in the mixer for a long time and agglomerating, resulting in the status quo that cannot be cleaned.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (6)

1. A discharge door device for a twin-shaft mixer, characterized in that it includes a drive transmission mechanism, a discharge door body (9) and a door liner (2), and the drive transmission mechanism includes a drive member (8), Rocker (11) and connecting rod (10), the driving part (8) is a hydraulic cylinder or cylinder, and one end of the driving part (8) is fixed on the side wall (12) of the twin-shaft mixer through the base, so The other end of the driving member (8) is hinged with one end of the rocker (11), and the rocker (11) is installed on the side wall (12) of the twin-shaft mixer through a pin shaft (13), and the rocker The other end of (11) is hinged with one end of connecting rod (10); the discharge door body (9) includes door panel (7), main triangle plate (5-1), side triangle plate (5-2), discharge door The main shaft (4) and the supporting rotating short shaft (6), the cross-sectional shape of the door panel (7) is an inverted V shape, the number of the side triangular plates (5-2) is two, and the side triangular plates (5-2) 2) A second through hole (5-21) and a third through hole (5-22) are opened on the top, and the two side triangular plates (5-2) are respectively fixed on the two ends of the door panel (7), and the main There is a first through hole (5-11) on the triangular plate (5-1), the main triangular plate (5-1) is fixed in the door panel (7), and the main shaft of the discharge door (4) passes through the second The through hole (5-21) and the first through hole (5-11) are fixed to the main triangular plate (5-1) and the side triangular plate (5-2), and one end of the main shaft (4) of the discharge door is connected to the The other end of the rod (10) is hinged, and the number of the supporting rotating short shafts (6) is two, and the two supporting rotating short shafts (6) respectively pass through the first two side triangle plates (5-2). The three-way hole (5-22) is fixed with the side triangular plate (5-2), and the supporting rotating short shaft (6) is sleeved on the bearing with seat fixed on the side wall (12) of the twin-shaft mixer, so There are multiple door liners (2), and the door liner (2) is fixed on the outer side of the door plate (7) by bolts (1) and nuts (3). 2. A discharge door device for a twin-shaft mixer according to claim 1, characterized in that: the distance between one end of the rocker (11) connected to the driving member (8) and the pin shaft (13) The distance is section AB, and the distance between one end of the rocker (11) connected to the connecting rod (10) and the pin shaft (13) is section CB, and the length of section AB is greater than that of section CB. 3. A discharge door device for a twin-shaft mixer according to claim 1 or 2, characterized in that: the two side triangle plates (5-2) are respectively welded to the two ends of the door panel (7), so Said main triangular plate (5-1) is welded in the door panel (7). 4. A discharge door device for a twin-shaft mixer according to claim 1 or 2, characterized in that: the number of the main triangular plates (5-1) is multiple, and the multiple main triangular plates (5-1) -1) Set evenly. 5. A discharge door device for a twin-shaft mixer according to claim 1 or 2, characterized in that: the discharge door spindle (4) passes through the second through hole (5-21) and the first The through hole (5-11) is welded to both the main triangle (5-1) and the side triangle (5-2), and the two supporting rotation minor axes (6) respectively pass through the two side triangles (5-2) The third through hole (5-22) on the top and welded with the side triangle plate (5-2). 6. A discharge door device for a twin-shaft mixer according to claim 1 or 2, characterized in that the shape of the door liner (2) is rectangular.

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