Mixing machine hopper cover connecting rod pressing structure

Abstract

The utility model provides a mixing machine hopper cover connecting rod pressing structure which comprises a machine frame of a mixing machine and a hopper cover, the hopper cover is connected with the machine frame through a mixing assembly, a connecting rod assembly is arranged on the machine frame and located on the side portion of the hopper cover, the connecting rod assembly comprises an air cylinder, a pressing rod and a hinge shaft, the pressing rod is of an L-shaped structure with a vertical portion and a transverse portion, and the hinge shaft is hinged to the air cylinder. The end, away from the transverse part, of the vertical part is connected with an air cylinder, and the air cylinder drives the vertical part to rotate around a hinge shaft so as to drive the transverse part to rotate around the hinge shaft and press a hopper cover downwards. A force arm L1 between the vertical part and the hinge shaft is larger than a force arm L2 between the transverse part and the hinge shaft; when the device is used, the push rod of the air cylinder is pushed out, the pressing rod can rotate along the hinged shaft until the transverse part of the pressing rod tightly presses the hopper cover, the device can be regarded as a labor-saving lever from the structure, a long force arm is formed with the rotating center of the hinged shaft of the pressing rod, the thrust of the air cylinder is amplified, the pressing force is increased, and stable matching of the hopper cover and the hopper is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hopper cover docking technology, specifically a mixer hopper cover connecting rod clamping structure. Background Technology

[0002] In the mixer, the hopper cover is connected to the mixing component. The frame of the mixer can control the docking of the hopper containing the material with the hopper cover containing the mixing component to achieve the mixing of the material. In the mixer manufactured by the applicant, the mixing component includes a stirring shaft, mixing blades linked to the stirring shaft, and a drive mechanism that drives the stirring shaft to rotate. The drive mechanism is located on the frame. The upper end of the stirring shaft is usually connected to the drive mechanism, and the lower end of the stirring shaft passes through the hopper cover and connects to the mixing blades (this part is located inside the hopper after docking). Since the machine shakes during mixing, in order to improve the stability of the docking and positioning of the hopper and the hopper cover, the applicant adds a connecting rod clamping structure to the hopper frame to ensure the stable fit between the mixer hopper cover and the hopper. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a mixer hopper cover connecting rod clamping structure. The technical solution adopted by this utility model is as follows:

[0004] A mixer hopper cover connecting rod clamping structure includes a mixer frame and a hopper cover. The hopper cover is connected to the frame via a mixing assembly. A connecting rod assembly is disposed on the side of the hopper cover on the frame. The connecting rod assembly includes a cylinder, a pressure rod, and a hinge shaft. The pressure rod has an L-shaped structure with a vertical part and a horizontal part, and the end of the vertical part away from the horizontal part is connected to the cylinder. The cylinder drives the vertical part to rotate around the hinge shaft, thereby causing the horizontal part to rotate around the hinge shaft and press down on the hopper cover. The lever arm L1 between the vertical part and the hinge shaft is greater than the lever arm L2 between the horizontal part and the hinge shaft.

[0005] Preferably, the vertical part is connected to the cylinder push rod through a strip groove, and the front end of the push rod has a protrusion that extends into the strip groove and slides in cooperation with the strip groove; the strip groove slides in cooperation with the front end of the push rod, and the protrusion at the front end of the push rod extends into the strip groove. When the push rod moves forward, the protrusion at the front end of the push rod slides in the strip groove, thereby driving the pressure rod to rotate around the hinge axis.

[0006] Preferably, an elastic layer is provided on the contact surface between the horizontal part of the pressure rod and the hopper cover; the contact surface between the horizontal part and the hopper cover is an abutting slope, the included angle between the abutting slope and the horizontal part is 100°≤α≤170°, and the elastic layer is embedded on the abutting slope; since the upper surface of the hopper cover is flat, in order to avoid the pressure rod from contacting the upper surface of the hopper cover from the beginning or the contact surface being uneven, the abutting slope is provided and the abutting slope is raised at least 10° relative to the lower surface of the horizontal part.

[0007] Preferably, the mixing assembly includes a stirring shaft, mixing blades linked to the stirring shaft, and a drive mechanism for driving the stirring shaft to rotate. The drive mechanism is located on the frame, the upper end of the stirring shaft is floatingly connected to the drive mechanism, and the lower end of the stirring shaft passes through the hopper cover and is connected to the mixing blades. A connecting ring is provided on the hopper cover, and the connecting ring is connected to the frame by a steel cable. The above structure allows for adjustable space between the hopper cover and the frame, so that the hopper cover can be compatible with the tolerances of different hoppers.

[0008] Preferably, in this embodiment, the two sets of connecting rod assemblies are symmetrically arranged above the hopper cover.

[0009] The beneficial effects of this utility model are as follows: When the cylinder push rod is pushed out, the pressure rod will rotate along the hinge axis until the horizontal part of the pressure rod presses the hopper cover. Structurally, it can be regarded as a force-saving lever. The cylinder assembly, as the prime mover, has a long lever arm with the hinge axis of the pressure rod, which amplifies the thrust of the cylinder and increases the clamping force to ensure the stable fit between the hopper cover and the hopper. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0011] Figure 1 This is a schematic diagram of the main structure in Example 1;

[0012] Figure 2 This is a schematic diagram showing the assembly of the mixing component, connecting rod assembly, and hopper cover in Example 1;

[0013] Figure 3 This is a schematic diagram of the compression bar structure in Example 1;

[0014] Figure 4 This is a schematic diagram of the mixing component and the hopper cover in Example 1;

[0015] In the figure, 1-frame, 2-hopper cover, 21-connecting ring, 3-hinge shaft, 31-cylinder, 311-push rod, 3111-protrusion, 32-pressure rod, 321-vertical part, 322-horizontal part, 323-elastic layer, 4-mixing component, 41-stirring shaft, 42-mixing blade, 43-drive mechanism. Detailed Implementation

[0016] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be further described in detail below with reference to Embodiment 1 and the accompanying drawings.

[0017] It should be noted that the directional and positional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0018] Example 1

[0019] like Figure 1-4 As shown, a mixer includes a frame 1 and a hopper cover 2, as well as a hopper cover connecting rod pressing structure. The hopper cover 2 is connected to the frame 1 via a mixing assembly 4. Two sets of connecting rod assemblies are symmetrically arranged above the hopper cover 2. Each connecting rod assembly includes a cylinder 31, a pressure rod 32, and a hinge shaft 3. The pressure rod 32 has an L-shaped structure with a vertical part 321 and a horizontal part 322. The end of the vertical part 321 away from the horizontal part 322 is connected to the cylinder 31. The cylinder 31 drives the vertical part 321 to rotate around the hinge shaft 3, thereby causing the horizontal part 322 to rotate around the hinge shaft 3 and press down on the hopper cover 2. The lever arm L1 between the vertical part 321 and the hinge shaft 3 is greater than the lever arm L2 between the horizontal part 322 and the hinge shaft 3.

[0020] When the push rods of the cylinders on both sides are pushed out, the pressure rod will rotate along the hinge axis until the horizontal part of the pressure rod presses against the hopper cover. Structurally, it can be regarded as a force-saving lever. The cylinder assembly, as the prime mover, has a long lever arm with the center of rotation of the hinge axis of the pressure rod, which amplifies the thrust of the cylinder and increases the clamping force.

[0021] The vertical part 321 is connected to the push rod 311 of the cylinder 31 through the strip groove 3211, and the front end of the push rod 311 has a protrusion 3111 that extends into the strip groove 3211 and slides in cooperation with the strip groove 3211; the strip groove 3211 slides in cooperation with the front end of the push rod 311, and the protrusion 3111 at the front end of the push rod 311 extends into the strip groove 3211. When the push rod moves forward, the protrusion at the front end of the push rod 311 slides in the strip groove, thereby driving the pressure rod 32 to rotate around the hinge shaft 3.

[0022] An elastic layer 323 is provided on the contact surface between the horizontal part 322 of the pressure rod 32 and the hopper cover 2; the contact surface between the horizontal part 322 and the hopper cover 2 is an abutting slope, the included angle between the abutting slope and the horizontal part 322 is 100°≤α≤170°, and the elastic layer 323 is embedded on the abutting slope.

[0023] Reference Figure 2 ,3 Since the upper surface of the hopper cover is flat, in order to avoid the pressure rod 32 from initially contacting the upper surface of the hopper cover or the contact surface being uneven, the contact slope is provided and the contact slope is raised at least 10° relative to the lower surface of the horizontal part 322.

[0024] The mixing assembly 4 includes a stirring shaft 41, a mixing blade 42 linked to the stirring shaft 41, and a drive mechanism 43 that drives the stirring shaft 41 to rotate. The drive mechanism 43 is located on the frame 1. The upper end of the stirring shaft 41 is floatingly connected to the drive mechanism 43, and the lower end of the stirring shaft 41 passes through the hopper cover 2 and is connected to the mixing blade 42. A connecting ring 21 is provided on the hopper cover 2, and the connecting ring 21 is connected to the frame 1 by a steel cable. The above structure allows for adjustable space between the hopper cover and the frame, so that the hopper cover can be compatible with the tolerances of different hoppers.

[0025] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mixer hopper cover connecting rod clamping structure, comprising a mixer frame (1) and a hopper cover (2), wherein the hopper cover (2) is connected to the frame (1) via a mixing assembly (4), characterized in that: A connecting rod assembly is provided on the frame (1) on the side of the hopper cover (2). The connecting rod assembly includes a cylinder (31), a pressure rod (32), and a hinge shaft (3). The pressure rod (32) is an L-shaped structure with a vertical part (321) and a horizontal part (322). The end of the vertical part (321) away from the horizontal part (322) is connected to the cylinder (31). The cylinder (31) drives the vertical part (321) to rotate around the hinge shaft (3) to drive the horizontal part (322) to rotate around the hinge shaft (3) and press down the hopper cover (2). The lever arm L1 between the vertical part (321) and the hinge shaft (3) is greater than the lever arm L2 between the horizontal part (322) and the hinge shaft (3).

2. The mixer hopper cover connecting rod clamping structure according to claim 1, characterized in that: The vertical part (321) is connected to the push rod (311) of the cylinder (31) through the strip groove (3211), and the front end of the push rod (311) has a protrusion (3111) that extends into the strip groove (3211) and slides into the strip groove (3211).

3. The mixer hopper cover connecting rod clamping structure according to claim 1, characterized in that: An elastic layer (323) is provided on the contact surface between the horizontal part (322) of the pressure rod (32) and the hopper cover (2).

4. The mixer hopper cover connecting rod clamping structure according to claim 3, characterized in that: The contact surface between the horizontal part (322) and the hopper cover (2) is an abutting slope, and the included angle between the abutting slope and the horizontal part (322) is 100°≤α≤170°. The elastic layer (323) is embedded on the abutting slope.

5. The mixer hopper cover connecting rod clamping structure according to claim 1, characterized in that: The mixing component (4) includes a stirring shaft (41), a mixing blade (42) linked to the stirring shaft (41), and a drive mechanism (43) for driving the stirring shaft (41) to rotate. The drive mechanism (43) is located on the frame (1). The upper end of the stirring shaft (41) is floatingly connected to the drive mechanism (43), and the lower end of the stirring shaft (41) passes through the hopper cover (2) and is connected to the mixing blade (42).

6. The mixer hopper cover connecting rod clamping structure according to claim 5, characterized in that: A connecting ring (21) is provided on the hopper cover (2), and the connecting ring (21) is connected to the frame (1) by a steel cable.

7. The mixer hopper cover connecting rod clamping structure according to claim 1, characterized in that: Two sets of connecting rod assemblies are symmetrically arranged above the hopper cover (2).

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