Scale calibration device for concrete production

Abstract

The utility model discloses a scale calibration device for concrete production. The scale calibration device comprises a supporting frame and weights. A winch is arranged on the lower surface of the supporting frame, a connecting sleeve is arranged at the lower end of a winch steel wire rope, clamping assemblies are arranged at rectangular holes in the lower end of the outer arc face of the connecting sleeve, and the input end of the winch is electrically connected with the output end of an external controller; the upper surface of the weight is provided with a connecting shaft, the upper end of the connecting shaft is provided with a hemispherical head, the clamping components are movably clamped with the hemispherical head, the middle part of the outer arc surface of the connecting shaft is movably sleeved with a double-taper sleeve, the clamping components are matched with the double-taper sleeve, and each clamping component comprises a clamping head, a guide shaft and a protective cylinder; according to the scale calibration device for concrete production, the weights can be automatically placed and taken away, the situation that calibration personnel carry the weights back and forth is avoided, control is easy, and use convenience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production, in particular to a scale calibration device for concrete production. Background Art

[0002] Concrete is one of the most important civil engineering materials in contemporary times. It is made of cementitious materials, granular aggregates (also known as aggregates), water, and admixtures and additives added when necessary in a certain proportion, which are then evenly stirred and compacted into a dense shape. In the process of concrete production, a weighing device is used to weigh the ingredients. It can ensure the accurate proportion of concrete, avoid wasting materials and affecting the quality of the project. In order to ensure the accuracy of weighing, the scales are calibrated regularly. The existing scale calibration devices generally use weights for calibration. During the calibration, the calibrator needs to move the weights to the weighing platform. Due to the large mass of the weights, external equipment is needed to carry them back and forth, which makes the operation cumbersome and affects the convenience of calibration. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a scale calibration device for concrete production, which can automatically place and remove weights, avoiding the calibration personnel from carrying weights back and forth, has simple control and good convenience, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a scale calibration device for concrete production, comprising a support frame and weights;

[0005] Support frame: A winch is provided on its lower surface, a connecting sleeve is provided at the lower end of the winch wire rope, and a clamping assembly is provided at the lower rectangular hole of the outer arc surface of the connecting sleeve. The input end of the winch is electrically connected to the output end of the external controller;

[0006] Weights: A connecting shaft is provided on its upper surface, and a hemispherical head is provided at the upper end of the connecting shaft. The clamping components are movably clamped with the hemispherical head. A double-tapered sleeve is movably sleeved in the middle of the outer arc surface of the connecting shaft. The clamping components are matched with the double-tapered sleeve to automatically place and remove the weights, avoiding the calibration personnel from carrying the weights back and forth. The control is simple and the use is convenient.

[0007] Furthermore, the clamping assembly includes a clamping head, a guide shaft and a protective tube. The clamping heads are respectively slidably connected to the inside of the rectangular holes at the lower end of the outer arc surface of the connecting sleeve. The clamping heads are movably clamped with the lower surface of the hemispherical head. A guide shaft is provided at the end of the clamping head away from the hemispherical head. The outer arc surface of the connecting sleeve is provided with symmetrically distributed protective tubes. The guide shafts are slidably connected to the longitudinally corresponding protective tubes to facilitate the connection of the hemispherical head.

[0008] Furthermore, the clamping assembly also includes a retaining ring and a spring. The retaining rings are respectively arranged on one end of the outer arc surface of the guide shaft close to the clamping head, and the springs are respectively movably sleeved on the outside of the guide shaft. The springs on the same guide shaft are located on the side of the retaining ring away from the clamping head. The springs are all located inside the protective tube to facilitate the positioning of the clamping head.

[0009] Furthermore, a counterweight ring is provided on the fixed sleeve on the outer arc surface of the connecting sleeve to increase the downward force of the connecting sleeve.

[0010] Furthermore, a positioning seat is provided at the lower end of the winch, and a positioning ring is rotatably connected to the inside of the circular hole at the lower end of the positioning seat. The lower end of the wire rope passes through the positioning ring to facilitate the positioning of the connecting sleeve.

[0011] Furthermore, a protective frame is provided on the lower surface of the support frame, and a baffle is slidably connected to the lower end of the interior of the protective frame. The baffle is located below the weight to provide protection for the weight and prevent the weight from accidentally falling.

[0012] Furthermore, an electric push rod is provided at the rear end of the protective frame, the telescopic end of the electric push rod is fixedly connected to the rear side of the baffle, and the input end of the electric push rod is electrically connected to the output end of the external controller to facilitate the control of the movement of the baffle.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the scale calibration device for concrete production has the following advantages:

[0014] The winch is installed above the concrete production weighing platform using an external frame and support frame. The winch releases the wire rope, and the weight falls onto the weighing platform. Then, under the action of gravity, the connecting sleeve can automatically connect and separate with the weight. The calibration device is directly installed above the weighing platform and can automatically place and remove the weight, avoiding the calibration personnel from carrying the weight back and forth. The control is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an enlarged structural diagram of point A of the present invention.

[0017] In the figure: 1 support frame, 2 winch, 3 connecting sleeve, 4 weight, 5 connecting shaft, 6 double cone sleeve, 7 hemispherical head, 8 clamping assembly, 81 clamping head, 82 guide shaft, 83 protective cylinder, 84 retaining ring, 85 spring, 9 counterweight ring, 10 positioning seat, 11 positioning ring, 12 protective frame, 13 baffle, 14 electric push rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-2 , this embodiment provides a technical solution: a scale calibration device for concrete production, comprising a support frame 1 and a weight 4;

[0020] Support frame 1: A winch 2 is provided on its lower surface, and the winch 2 is installed above the concrete production weighing platform by using the external frame and support frame 1. The lower end of the wire rope of the winch 2 is provided with a connecting sleeve 3, and the rectangular holes at the lower end of the outer arc surface of the connecting sleeve 3 are provided with a clamping assembly 8. The input end of the winch 2 is electrically connected to the output end of the external controller, and a counterweight ring 9 is provided on the fixed sleeve on the outer arc surface of the connecting sleeve 3. The counterweight ring 9 increases the downward force of the connecting sleeve 3. A positioning seat 10 is provided at the lower end of the winch 2, and a positioning ring 11 is rotatably connected to the circular hole at the lower end of the positioning seat 10. The lower end of the wire rope passes through the positioning ring 11. The positioning seat 10 and the positioning ring 11 position the wire rope, which is convenient for controlling the falling of the connecting sleeve 3 at a fixed point;

[0021] Weight 4: A connecting shaft 5 is provided on its upper surface, a hemispherical head 7 is provided on the upper end of the connecting shaft 5, and the clamping components 8 are all movably clamped with the hemispherical head 7. A double-tapered sleeve 6 is movably sleeved in the middle of the outer arc surface of the connecting shaft 5. The upper and lower ends of the double-tapered sleeve 6 are both conical. A conical ring groove corresponding to the double-tapered sleeve 6 is opened at the bottom of the hemispherical head 7. The clamping components 8 are all arranged in conjunction with the double-tapered sleeve 6. The sum of the masses of the weight 4, the connecting shaft 5, the double-tapered sleeve 6 and the hemispherical head 7 is the standard value, and the balancing platform can be calibrated.

[0022] Among them: the clamping assembly 8 includes a clamping head 81, a guide shaft 82 and a protective tube 83. The clamping heads 81 are respectively slidably connected to the inner side of the rectangular hole at the lower end of the outer arc surface of the connecting sleeve 3. The clamping heads 81 are movably connected to the lower surface of the hemispherical head 7. The winch 2 releases the wire rope, and the wire rope drives the hemispherical head 7 downward through the connecting sleeve 3 and the clamping head 81. The connecting shaft 5 and the weight 4 move downward synchronously, and then the weight 4 is placed above the weighing platform. The end of the clamping head 81 away from the hemispherical head 7 is provided with a guide shaft 82. The outer surface of the connecting sleeve 3 The arc surface is provided with symmetrically distributed protective cylinders 83, and the guide shafts 82 are all slidably connected with the longitudinally corresponding protective cylinders 83. The protective cylinders 83 guide the guide shafts 82 and provide protection for the internal parts. The clamping assembly 8 also includes a retaining ring 84 and a spring 85. The retaining rings 84 are respectively arranged on one end of the outer arc surface of the guide shaft 82 close to the clamping head 81, and the springs 85 are respectively movably sleeved on the outside of the guide shaft 82. The springs 85 on the same guide shaft 82 are located on the side of the retaining ring 84 away from the clamping head 81. The springs 85 are Located inside the protective tube 83, the guide shaft 82 provides a guide for the movement of the spring 85 and the clamp 81, the connecting sleeve 3 drives the clamp 81 to move downward, the clamp 81 and the conical surface of the upper end of the double-cone sleeve 6 slide relative to each other, and then the clamp 81 drives the guide shaft 82 and the retaining ring 84 to move horizontally to compress the spring 85, the clamp 81 passes over the double-cone sleeve 6, the spring 85 stretches, the clamp 81 moves to the bottom of the double-cone sleeve 6, and then the winch 2 reels the wire rope, and the wire rope drives the connecting sleeve 3 and the clamp 81 to move downward. When the double-cone sleeve 6 moves upward, the weight of the double-cone sleeve 6 is relatively light, and then the clamping head 81 drives the double-cone sleeve 6 to slide upward along the guide shaft 82 and insert into the conical ring groove at the bottom of the hemispherical head 7. The upper end of the double-cone sleeve 6 is inserted into the interior of the hemispherical head 7 and connected as one. The double-cone sleeve 6 stops moving upward, and then the clamping head 81 that continues to move upward slides relative to the conical surface of the lower end of the double-cone sleeve 6. The clamping head 81 compresses the spring 85 and shrinks it into the interior of the connecting sleeve 3, thereby facilitating the clamping head 81 to pass over the hemispherical head 7, and the connecting sleeve 3 and the hemispherical head 7 are separated from the hemispherical head 7.

[0023] Among them: a protective frame 12 is provided on the lower surface of the support frame 1, and a baffle 13 is slidably connected to the lower end of the protective frame 12. The baffle 13 is located below the weight 4. An electric push rod 14 is provided at the rear end of the protective frame 12. The telescopic end of the electric push rod 14 is fixedly connected to the rear side of the baffle 13. The input end of the electric push rod 14 is electrically connected to the output end of the external controller. The telescopic end of the electric push rod 14 drives the baffle 13 to slide backward along the slide groove at the lower end of the protective frame 12, and the baffle 13 is moved away from under the weight 4.

[0024] The working principle of a scale calibration device for concrete production provided by the present invention is as follows: when in use, the hoist 2 is installed above the concrete production weighing platform using the external frame and support frame 1. When calibrating the scale, the surface of the weighing platform is cleaned, the weighing value is reset to zero, and the external controller is adjusted. The telescopic end of the electric push rod 14 drives the baffle 13 to slide backward along the slide groove at the lower end of the protective frame 12, and the baffle 13 is moved away from under the weight 4. Then the winch 2 releases the wire rope, and the wire rope drives the hemispherical head 7 to move downward through the connecting sleeve 3 and the clamping head 81. The connecting shaft 5 and the weight 4 move downward synchronously, and then the weight 4 is placed on the weighing platform. At the top, the connecting shaft 5, the weight 4, the double-cone sleeve 6 and the hemispherical head 7 stop moving downward. As the wire rope is released, the gravity of the counterweight ring 9 and the connecting sleeve 3 drives the connecting sleeve 3 to continue to move downward, and the connecting sleeve 3 drives the clamping head 81 to move downward. The upper and lower ends of the double-cone sleeve 6 are both conical, and the clamping head 81 slides relative to the conical surface of the upper end of the double-cone sleeve 6, and then the clamping head 81 drives the guide shaft 82 and the retaining ring 84 to move laterally to compress the spring 85. The clamping head 81 passes over the double-cone sleeve 6, the spring 85 stretches, and the clamping head 81 moves to the bottom of the double-cone sleeve 6, and then the winch 2 reels the wire rope, and the wire rope drives the connecting sleeve 3 and the clamping head 81 to The double-cone sleeve 6 moves upward, the weight of the double-cone sleeve 6 is relatively light, and then the clamping head 81 drives the double-cone sleeve 6 to slide upward along the guide shaft 82 and insert into the cone ring groove at the bottom of the hemispherical head 7. The upper end of the double-cone sleeve 6 is inserted into the interior of the hemispherical head 7 and connected as one. The double-cone sleeve 6 stops moving upward, and then the clamping head 81 that continues to move upward slides relative to the conical surface of the lower end of the double-cone sleeve 6. The clamping head 81 compresses the spring 85 and shrinks into the interior of the connecting sleeve 3, thereby facilitating the clamping head 81 to pass over the hemispherical head 7. The connecting sleeve 3 and the hemispherical head 7 are separated from the hemispherical head 7. Then the concrete production weighing platform weighs the weight 4, connecting shaft 5, double-cone sleeve 6 and hemispherical head 7, and the weight 4. The sum of the masses of the connecting shaft 5, the double-cone sleeve 6 and the hemispherical head 7 is the standard value, and then the balancing platform can be calibrated. After the calibration is completed, the winch 2 controls the connecting sleeve 3 to move downward, and the clamping head 81 contacts the hemispherical head 7. The gravity of the counterweight ring 9 and the connecting sleeve 3 drives the clamping head 81 to move downward. As the hemispherical head 7 moves downward, the clamping head 81 is squeezed into the inside of the connecting sleeve 3. The clamping head 81 will pass over the hemispherical head 7 and extend out. Then the winch 2 drives the connecting sleeve 3 and the clamping head 81 to move upward, and the clamping head 81 drives the hemispherical head 7 to move upward. The weight 4 moves upward synchronously to reset, and the baffle 13 is reset to the bottom of the weight 4 to prevent the weight 4 from falling accidentally.

[0025] It is worth noting that the electric push rod 14 and winch 2 disclosed in the above embodiments can be freely configured according to the actual application scenario. The winch 2 can use a winch of model CDT0.5, and the electric push rod 14 can use an electric push rod of model ANT-52. The external controller controls the operation of the electric push rod 14 and the winch 2 using methods commonly used in the prior art.

[0026] The above description is merely 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 contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A scale calibration device for concrete production, characterized by: It comprises a support frame (1) and a weight (4); The support frame (1) is provided with a winch (2) on its lower surface, a connecting sleeve (3) is provided at the lower end of the wire rope of the winch (2), a clamping assembly (8) is provided at the rectangular hole at the lower end of the outer arc surface of the connecting sleeve (3), and the input end of the winch (2) is electrically connected to the output end of the external controller; The weight (4) is provided with a connecting shaft (5) on its upper surface, a hemispherical head (7) is provided at the upper end of the connecting shaft (5), and the clamping components (8) are all movably clamped with the hemispherical head (7). The middle part of the outer arc surface of the connecting shaft (5) is movably sleeved with a double cone sleeve (6), and the clamping components (8) are all arranged in conjunction with the double cone sleeve (6).

2. A scale calibration device for concrete production according to claim 1, characterized in that: The clamping assembly (8) comprises a clamping head (81), a guide shaft (82) and a protective tube (83). The clamping heads (81) are respectively slidably connected to the interior of the rectangular hole at the lower end of the outer arc surface of the connecting sleeve (3). The clamping heads (81) are movably clamped with the lower surface of the hemispherical head (7). The ends of the clamping heads (81) away from the hemispherical head (7) are provided with guide shafts (82). The outer arc surface of the connecting sleeve (3) is provided with symmetrically distributed protective tubes (83). The guide shafts (82) are slidably connected to the longitudinally corresponding protective tubes (83).

3. A scale calibration device for concrete production according to claim 2, characterized in that: The clamping assembly (8) further comprises a retaining ring (84) and a spring (85), wherein the retaining ring (84) is respectively arranged on one end of the outer arc surface of the guide shaft (82) close to the clamping head (81), and the spring (85) is respectively movably sleeved on the outside of the guide shaft (82), and the spring (85) on the same guide shaft (82) is located on the side of the retaining ring (84) away from the clamping head (81), and the spring (85) is located inside the protective tube (83).

4. A scale calibration device for concrete production according to claim 1, characterized in that: A counterweight ring (9) is provided on the fixed sleeve on the outer arc surface of the connecting sleeve (3).

5. The scale calibration device for concrete production according to claim 1, characterized in that: The lower end of the hoist (2) is provided with a positioning seat (10), a positioning ring (11) is rotatably connected inside the circular hole at the lower end of the positioning seat (10), and the lower end of the wire rope passes through the positioning ring (11).

6. A scale calibration device for concrete production according to claim 1, characterized in that: A protective frame (12) is provided on the lower surface of the support frame (1), and a baffle (13) is slidably connected to the lower end of the interior of the protective frame (12), and the baffle (13) is located below the weight (4).

7. A scale calibration device for concrete production according to claim 6, characterized in that: The rear end of the protective frame (12) is provided with an electric push rod (14), the telescopic end of the electric push rod (14) is fixedly connected to the rear side of the baffle (13), and the input end of the electric push rod (14) is electrically connected to the output end of the external controller.

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