A crane rotary cylinder with a position-limiting lock

Abstract

The utility model discloses a kind of crane rotary cylinders with limiting locking, it is related to crane relevant technical field.The utility model includes rotary cylinder main body, fixed plate and limiting component, the output end of rotary cylinder main body is fixed with flange, annular groove is set in the lower part of flange peripheral side, the inside vertical camber of annular groove is fixed with friction ring, the rotary cylinder main body top of flange side is fixed with fixed plate, limiting component is set in fixed plate, limiting component includes friction block, friction block is movably connected in annular groove and with friction ring mutually abuts.This utility model sets up rotary cylinder main body, fixed plate and limiting component, solve the crane rotary cylinder without locking structure, the structure position stability after rotation is not good enough, and determine the rotation angle operation of rotating structure is not enough convenient.

Description

Technical Field

[0001] This utility model belongs to the field of crane-related technical technology, and in particular relates to a crane rotary cylinder with limit lock. Background Technology

[0002] A rotary cylinder is a type of cylinder in which the intake and exhaust pipes and the air guide head are fixed, while the cylinder body can rotate relative to them and act on machine tool fixtures and wire winding devices. It is a cylindrical metal component that guides the piston to perform linear reciprocating motion within it. A rotary cylinder mainly consists of an air guide head, cylinder body, piston, and piston rod. When a rotary cylinder is working, external force drives the cylinder body, cylinder head, and air guide head to rotate, while the piston and piston rod can only perform reciprocating linear motion. Furthermore, the air guide head is externally connected to a fixed pipe. However, it still has the following drawbacks in practical use:

[0003] When the rotary cylinder is in operation, after it is installed between the crane and the equipment that needs to be rotated, starting the rotary cylinder can drive the crane equipment to rotate in the horizontal direction. However, during the operation, when facing the need for high-precision lifting, the rotary cylinder does not have a locking structure, which can easily cause the crane to swing during the descent process, causing its position to deviate and affecting the working stability of the crane.

[0004] Secondly, during operation, when the rotary cylinder needs to accurately determine the rotation angle, relying solely on visual observation requires frequent adjustments to its position, making it inconvenient to determine the rotation angle of the rotating structure during operation. Utility Model Content

[0005] The purpose of this utility model is to provide a crane rotary cylinder with limit locking. By setting the rotary cylinder body, fixing plate and limit component, it solves the problems of the lack of locking structure in the crane rotary cylinder, the poor stability of the structure position after rotation, and the inconvenience of determining the rotation angle of the rotating structure.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a crane rotary cylinder with a limit lock, comprising a rotary cylinder body, a fixed plate, and a limit assembly. A flange is fixed to the output end of the rotary cylinder body. An annular groove is formed on the lower periphery of the flange. A friction ring is fixed to the inner vertical arc surface of the annular groove. A fixed plate is fixed to the top of the rotary cylinder body on one side of the flange. A limit assembly is provided within the fixed plate. The limit assembly includes a friction block, which is movably connected within the annular groove and abuts against the friction ring. During operation, the rotary cylinder body drives the flange to rotate. After the flange stops rotating, an electric push rod is activated to drive the friction block to move to the periphery of the friction ring on the annular groove around the flange. After clamping, the relative position of the flange and the rotary cylinder body is fixed.

[0008] Furthermore, a support ring is fixed to the top of the rotary cylinder body, and the flange is movably connected inside the support ring. The support ring on the rotary cylinder body restricts the rotation of the flange and prevents the flange from tilting during rotation.

[0009] Furthermore, the upper circumference of the flange is fixed with a scale in a ring array, and a pointer is fixed at the top of the support ring near the edge of the inner ring. The pointer and the friction block are offset from each other. The scale on the circumference of the flange and the pointer determine each other's positions, so that during operation, the rotation angle of the flange and the rotation angle of the crane equipment installed on the flange can be determined by the pointer.

[0010] Furthermore, the top of the flange is open, and a connecting bolt is fixed in a circular array at the bottom of the top opening of the flange. The connecting bolt on the flange is installed with the equipment that the crane needs to drive to rotate, thus installing the flange and the connecting bolt together.

[0011] Furthermore, the limiting assembly also includes a fixed base, an electric push rod, and a movable column. The electric push rod is fixed to the top of the fixed plate, and the movable column is fixed to the telescopic end of the electric push rod. The movable column is fixed to the center of the outer arc surface of the friction block. The fixed base on the limiting assembly supports the electric push rod on the top of the rotary cylinder body. The electric push rod drives the movable column to move, thereby causing the friction block to move.

[0012] Furthermore, the fixing seat is located on the top of the rotary cylinder body on the side of the fixing plate away from the flange, and the fixing seat is fixed to the top of the rotary cylinder body. A movable hole is opened through the center of the fixing plate, and the movable column is movably connected through the movable hole. The fixing plate is movably connected to the movable column through the movable hole, and supports the movable column on the top of the rotary cylinder body.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of insufficient structural stability after rotation caused by the lack of a locking structure in the rotating cylinder of a crane, by setting up a rotating cylinder body, a fixing plate, and a limiting component. The rotating cylinder body drives the flange to rotate, which in turn drives the flange and the crane equipment to rotate. When the flange stops rotating at a suitable angle, the electric push rod is activated, driving the movable column to move the friction block into the annular groove around the flange until the movable column presses against the friction ring in the annular groove around the flange and is pressed tightly, thus fixing the position between the flange and the rotating cylinder body. When it is necessary to restore the free rotation of the flange, the electric push rod is activated, driving the movable column away from the flange until the friction block leaves the friction ring around the flange, restoring the free rotation of the flange. This provides a locking structure for the crane rotating cylinder, resulting in better structural stability after rotation.

[0015] This invention solves the problem of inconvenient operation in determining the rotation angle of a crane's rotating structure by setting up a rotary cylinder body. After starting work, the rotary cylinder body drives the flange to rotate. When the flange rotates, the scale corresponding to the pointer changes. By observing the change in the pointer and the number of rotations of the crane equipment, the change in the scale corresponding to the pointer is read, and the angle value of the change is determined. Thus, the angle of rotation of the flange and the angle of rotation of the crane equipment can be determined, making it more convenient for the crane's rotary cylinder to determine the rotation angle of the rotating structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional view of the assembly structure of a crane rotary cylinder with limit lock;

[0018] Figure 2 A three-dimensional structural view of the main body of the rotary cylinder;

[0019] Figure 3 for Figure 2 Enlarged view of the structure at point A in the image;

[0020] Figure 4 This is a three-dimensional structural diagram of the fixed plate;

[0021] Figure 5 This is a three-dimensional structural diagram of the limiting component.

[0022] Figure label:

[0023] 1. Rotary cylinder body; 101. Support ring; 102. Flange; 103. Connecting screw; 104. Scale; 105. Annular groove; 106. Friction ring; 107. Pointer; 2. Fixing plate; 201. Movable hole; 3. Limiting assembly; 301. Fixing seat; 302. Electric push rod; 303. Movable column; 304. Friction block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0025] Please see Figure 1-3 This utility model is a crane rotary cylinder with limit locking, including a rotary cylinder body 1, a fixing plate 2, and a limit component 3. A flange 102 is fixed to the output end of the rotary cylinder body 1. When the rotary cylinder body 1 is working, it drives the flange 102 to rotate. During the rotation of the flange 102, it drives the structure installed on the flange 102 to rotate. An annular groove 105 is opened on the lower part of the periphery of the flange 102. The annular groove 105 fixes the friction ring 106 in it. The friction ring 106 is fixed on the vertical arc surface of the inner side of the annular groove 105. A fixing plate 2 is fixed to the top of the rotary cylinder body 1 on one side of the flange 102. The fixing plate 2 supports the movable column 303. The limit component 3 is provided in the fixing plate 2. The limit component 3 includes a friction block 304. The friction block 304 is movably connected in the annular groove 105 and abuts against the friction ring 106, limiting and determining the position of the flange 102 on the top of the rotary cylinder body 1.

[0026] Specifically, a support ring 101 is fixed on the top of the rotary cylinder body 1, and a flange 102 is movably connected inside the support ring 101. When the rotary cylinder body 1 is working, the support ring 101 positions the flange 102 at the top of the rotary cylinder body 1.

[0027] Furthermore, the upper circumference of the flange 102 is fixed with a scale 104 in a ring array (the smallest division of the scale 104 is 5 degrees). The top of the support ring 101 is fixed with a pointer 107 near the edge of the inner ring. The pointer 107 is offset from the friction block 304. When the flange 102 rotates, it drives the scale 104 to move. At the same time, the pointer 107 corresponds to different scales 104 to determine different angles of rotation of the flange 102.

[0028] Furthermore, the top of the flange 102 is open, and the bottom of the top opening of the flange 102 is fixed with connecting bolts 103 in a ring array. When installing the crane equipment driven by the rotary cylinder body 1 on the flange 102, the crane equipment is placed on the top of the flange 102, and the mounting holes are aligned with the connecting bolts 103 inside the flange 102. After the mounting bolts pass through the mounting structure, they are screwed into the connecting bolts 103 and tightened, thus installing the flange 102 and the rotating structure.

[0029] The operation process of this embodiment is as follows: During operation, when the rotary cylinder body 1 is installed and fixed on the installation equipment, after the joint of the rotary cylinder body 1 is installed, the flange 102 is installed between the crane and the equipment that needs to be rotated, and then operation can begin. After operation begins, the rotary cylinder body 1 drives the flange 102 to rotate. When the flange 102 rotates, the scale 104 corresponding to the pointer 107 changes. By observing the change in the pointer 107 and the number of rotations of the crane equipment, the change in the scale 104 corresponding to the pointer 107 is read, and the angle value of the change is determined. Thus, the angle of rotation of the flange 102 is determined, and the angle of rotation of the crane equipment is determined. Specific Implementation Example 2

[0030] Please see Figure 1-5 Based on the first specific embodiment, the limiting component 3 also includes a fixed base 301, an electric push rod 302, and a movable column 303. The electric push rod 302 is fixed on the top of the fixed plate 2, and the movable column 303 is fixed at the telescopic end of the electric push rod 302. The movable column 303 is fixed to the center of the outer arc surface of the friction block 304. When the limiting component 3 is working, the fixed plate 2 fixes the electric push rod 302 on the rotary cylinder body 1. The electric push rod 302 drives the movable column 303 to approach and move away from the flange 102, thereby driving the friction block 304 on the movable column 303 to approach and move away from the flange 102.

[0031] Specifically, the fixed seat 301 is set on the top of the rotary cylinder body 1 on the side of the fixed plate 2 away from the flange 102, and the fixed seat 301 is fixed on the top of the rotary cylinder body 1. The fixed plate 2 has a through hole 201 in the center, and the movable column 303 is movably connected in the through hole 201. The movable hole 201 on the fixed plate 2 is movably connected to the movable column 303, and provides a certain support for the movable column 303 through the fixed plate 2.

[0032] The operation process of this embodiment is as follows: During operation, the rotary cylinder body 1 drives the flange 102 to rotate, which in turn drives the flange 102 and the crane equipment to rotate. When the flange 102 rotates to a suitable angle and stops rotating, the electric push rod 302 is activated, which drives the movable column 303 to move the friction block 304 into the annular groove 105 around the flange 102. This continues until the movable column 303 presses against the friction ring 106 in the annular groove 105 around the flange 102 and is pressed tightly. This determines the positional limitation between the flange 102 and the rotary cylinder body 1. After locking, the flange 102 and the rotary cylinder body 1 can withstand a deflection torque of ±0.5°. When it is necessary to restore the free rotation of the flange 102, the electric push rod 302 is activated, which drives the movable column 303 away from the flange 102 until the friction block 304 leaves the friction ring 106 around the flange 102, thus restoring the free rotation of the flange 102.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A crane rotary cylinder with limit locking, comprising a rotary cylinder body (1), a fixed plate (2), and a limit assembly (3), characterized in that: A flange (102) is fixed to the output end of the rotary cylinder body (1). An annular groove (105) is provided on the lower part of the periphery of the flange (102). A friction ring (106) is fixed on the vertical arc surface of the inner side of the annular groove (105). A fixing plate (2) is fixed to the top of the rotary cylinder body (1) on one side of the flange (102). A limit component (3) is provided in the fixing plate (2). The limit component (3) includes a friction block (304). The friction block (304) is movably connected in the annular groove (105) and abuts against the friction ring (106).

2. A crane rotary cylinder with limit lock according to claim 1, characterized in that: The top of the rotary cylinder body (1) is fixed with a support ring (101), and the flange (102) is movably connected inside the support ring (101).

3. A crane rotary cylinder with limit lock according to claim 2, characterized in that: The upper part of the flange (102) is fixed with a scale (104) in a ring array. The top of the support ring (101) is fixed with a pointer (107) near the edge of the inner ring. The pointer (107) is offset from the friction block (304).

4. A crane rotary cylinder with limit lock according to claim 1, characterized in that: The top of the flange (102) is open, and the bottom of the top opening of the flange (102) is fixed with connecting screws (103) in a ring array.

5. A crane rotary cylinder with limit lock according to claim 1, characterized in that: The limiting component (3) also includes a fixed base (301), an electric push rod (302) and a movable column (303). The electric push rod (302) is fixed on the top of the fixed plate (2). The movable column (303) is fixed at the telescopic end of the electric push rod (302). The movable column (303) is fixed to the center of the outer arc surface of the friction block (304).

6. A crane rotary cylinder with limit locking according to claim 5, characterized in that: The fixed seat (301) is located on the top of the rotary cylinder body (1) on the side of the fixed plate (2) away from the flange (102), and the fixed seat (301) is fixed on the top of the rotary cylinder body (1). The fixed plate (2) has a through hole (201) in the center, and the movable column (303) is movably connected in the through hole (201).

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