Telescopic arm structure of balance crane

Abstract

The utility model relates to the technical field of balance cranes, and discloses a telescopic arm structure of a balance crane, which comprises a balance crane main body, the balance crane main body further comprises a telescopic arm module, and the telescopic arm module comprises a telescopic shell arranged on a stand column; the telescopic component is movably mounted in the telescopic shell; the number of the fixed pulleys is two, and the fixed pulleys are installed at the top end and one side of the stand column respectively; the motor is arranged on one side of the top end of the bottom plate, and a rotating disc is arranged on the motor; the tail end of the steel cable is fixedly connected with a rotating disc of the motor, the other end of the steel cable is connected with one side of the top end of the telescopic component, and the steel cable is connected with the two fixed pulleys; by arranging the telescopic arm module, the movement path of the steel cable can be effectively guided through the two fixed pulleys, the tension of the steel cable uniformly acts on the top end of the telescopic component, the tail end supporting force when the telescopic component stretches out is enhanced, and drooping is reduced.

Description

Technical Field

[0001] This utility model relates to the field of balance crane technology, and more specifically to a telescopic boom structure for a balance crane. Background Technology

[0002] Existing balance crane telescopic booms generally suffer from insufficient rigidity and uneven support. Especially when the boom is fully extended, the end is prone to drooping due to excessive load, leading to decreased handling accuracy and even safety hazards such as load swing or structural deformation. They are difficult to adapt to diverse industrial handling needs. Therefore, there is an urgent need for a balance crane telescopic boom with dynamic support function to improve the rigidity and stability of the boom and ensure the safety of the handling process. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a telescopic boom structure for a balance crane to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a telescopic boom structure for a balance crane, comprising a balance crane body, the balance crane body including a base plate, a column fixedly installed at the top of the base plate, and the balance crane body further including a telescopic boom module, characterized in that the telescopic boom module includes:

[0005] A telescopic housing, which is mounted on a column;

[0006] A telescopic component, which is movably installed inside the telescopic housing;

[0007] Two fixed pulleys are installed on the top and one side of the column, respectively.

[0008] The motor is mounted on one side of the top of the base plate, and a rotating disk is mounted on the motor.

[0009] The steel cable has one end fixedly connected to the rotating disk of the motor, and the other end connected to one side of the top of the telescopic component. The steel cable is also connected to two fixed pulleys respectively.

[0010] The hydraulic telescopic rods are provided in pairs. The hydraulic telescopic rods are fixedly installed on the front and rear sides of the telescopic housing, respectively. The telescopic parts of the hydraulic telescopic rods are connected to the front and rear sides of the telescopic component, respectively.

[0011] By incorporating a telescopic arm module, the movement path of the steel cable can be effectively guided by two fixed pulleys, ensuring that the tension of the steel cable is evenly applied to the top of the telescopic component. This enhances the end support force of the telescopic component when it extends, reducing sag. By starting the motor, the rotating disc drives the steel cable to be tensioned, thereby achieving tension adjustment of the steel cable.

[0012] Furthermore, a diagonal support rod is movably mounted on one side of the column via a hinge, and the end of the diagonal support rod is movably connected to the bottom end of the telescopic component via a pivot. By providing the diagonal support rod, dynamic support can be effectively provided to the bottom end of the telescopic component, allowing the telescopic component to obtain additional upward thrust when extended, reducing sagging caused by load, and improving overall stability.

[0013] Furthermore, slide rails are fixedly installed at both the bottom and top of the telescopic housing, and sliders are provided at both the bottom and top of the telescopic component, with the sliders slidably mounted on the slide rails. By providing slide rails, a sliding track can be effectively provided for the sliders of the telescopic component, making the telescopic movement of the component within the telescopic housing smoother, reducing frictional resistance, and extending its service life.

[0014] Furthermore, a mounting plate is fixedly installed on one side of the top of the telescopic component. A ball groove is formed at the top of the mounting plate, and a spherical rotating shaft is disposed inside the ball groove. The spherical rotating shaft is fixedly connected to one end of the steel cable. This structure forms a ball hinge, which effectively enables flexible connection between the steel cable and the telescopic component through the ball groove and the spherical rotating shaft. This allows the tension of the steel cable to adapt to small angular changes in the telescopic component, reducing local stress concentration in the steel cable and improving connection reliability.

[0015] Furthermore, grooves are provided on both the front and rear sides of the telescopic component, and two sets of pressing rollers are movably installed on both the front and rear sides inside the telescopic housing. These pressing rollers contact the grooves of the telescopic component, and each pressing roller is equipped with a spring-loaded telescopic rod, which is fixedly connected to the inner wall of the telescopic housing. By providing the pressing rollers and spring-loaded telescopic rods, a lateral pressing force can be effectively applied to the grooves of the telescopic component through the pressing rollers, making the movement of the telescopic component within the telescopic housing more stable, reducing lateral swaying, and improving operational accuracy and safety.

[0016] Furthermore, a composite reinforcing layer is attached to the outer surface of both the telescopic shell and the telescopic component. By providing this composite reinforcing layer, the structural strength of the outer surface of the telescopic shell and the telescopic component can be effectively enhanced, making the structure more robust and less prone to breakage during long-term use.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model, by providing a telescopic arm module, can effectively guide the movement path of the steel cable through two fixed pulleys, so that the tension of the steel cable is evenly applied to the top of the telescopic component, enhancing the end support force of the telescopic component when it extends and reducing sagging.

[0019] 2. By providing a diagonal support rod, this utility model can effectively provide dynamic support for the bottom of the telescopic component, enabling the telescopic component to obtain additional upward thrust when it extends, reducing sagging caused by load, and improving overall stability. Attached Figure Description

[0020] Figure 1 This is a frontal sectional view of the structure of this utility model.

[0021] Figure 2 This is a front view schematic diagram of the structure of this utility model.

[0022] Figure 3 This is a partial structural side view of the present invention.

[0023] Figure 4 This is a top view of part of the structure of this utility model.

[0024] The attached figures are labeled as follows: 100, base plate; 110, column; 111, telescopic outer shell; 112, telescopic component; 113, fixed pulley; 114, motor; 115, steel cable; 116, diagonal support rod; 117, slide rail; 118, mounting plate; 119, hydraulic telescopic rod; 120, pressure roller; 121, spring telescopic rod. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1

[0026] Reference Figure 1 and Figure 2 This utility model provides a telescopic boom structure for a balance crane, including a balance crane body, a base plate 100, and a column 110 fixedly installed at the top of the base plate 100. The balance crane body also includes a telescopic boom module, which includes:

[0027] Telescopic housing 111 is mounted on column 110;

[0028] Telescopic component 112 is movably installed inside the telescopic housing 111;

[0029] There are two fixed pulleys 113, which are installed on the top and one side of the column 110 respectively.

[0030] Motor 114 is located on one side of the top of base plate 100. A rotating disk is installed on motor 114. The model of motor 114 is Siemens 1LE0001 three-phase asynchronous motor.

[0031] The steel cable 115 has its end fixedly connected to the rotating disk of the motor 114, and its other end connected to one side of the top of the telescopic component 112. The steel cable 115 is also connected to two fixed pulleys 113 respectively.

[0032] Two hydraulic telescopic rods 119 are provided. The hydraulic telescopic rods 119 are fixedly installed on the front and rear sides of the telescopic housing 111 respectively. The telescopic parts of the hydraulic telescopic rods 119 are connected to the front and rear sides of the telescopic component 112 respectively. The hydraulic telescopic rods 119 are Parker 2H series hydraulic telescopic rods, model 2H-3.00-24.

[0033] A diagonal support rod 116 is movably installed on one side of the column 110 via a hinge, and the end of the diagonal support rod 116 is movably connected to the bottom end of the telescopic component 112 via a pivot.

[0034] Working Principle: During use, two hydraulic telescopic rods 119 serve as the power source for the telescopic module, directly driving the telescopic component 112 to extend and retract within the telescopic housing 111 through their telescopic movements. After the motor 114 starts, it drives its rotating disc to rotate, tightening the steel cable 115. Adjusting the tension of the steel cable 115, guided by two fixed pulleys 113, ensures that the tension of the steel cable 115 is evenly transmitted to the top side of the telescopic component 112, thus providing additional support to the end of the telescopic component 112 and reducing sagging due to load when it extends. Furthermore, the inclined support rod 116 dynamically adjusts its angle with the movement of the telescopic component 112 via hinges and a pivot, providing continuous support to the bottom of the telescopic component 112 and further enhancing the stability of the overall structure. Example 2

[0035] Reference Figure 1 The difference between Embodiment 2 and Embodiment 1 is that: the bottom and top of the telescopic outer shell 111 are both fixedly installed with slide rails 117, and the bottom and top of the telescopic component 112 are both provided with sliders, which are all slidably installed on the slide rails 117.

[0036] A mounting plate 118 is fixedly installed on one side of the top of the telescopic component 112. A ball groove is opened at the top of the mounting plate 118, and a spherical rotating shaft is provided inside the ball groove. The spherical rotating shaft is fixedly connected to one end of the steel cable 115.

[0037] The telescopic component 112 has grooves on both the front and rear sides. The telescopic housing 111 has two sets of pressing rollers 120 movably installed on both the front and rear sides inside. The pressing rollers 120 are in contact with the grooves of the telescopic component 112. The pressing rollers 120 are each equipped with a spring telescopic rod 121, which is fixedly connected to the inner wall of the telescopic housing 111.

[0038] The outer surfaces of the telescopic shell 111 and the telescopic component 112 are all covered with a composite reinforcing layer. The composite reinforcing layer is made of carbon fiber material. The composite reinforcing layer and the outer surfaces of the telescopic shell 111 and the telescopic component 112 are all fixedly bonded together with epoxy resin.

Claims

1. A telescopic boom structure for a balance crane, comprising a balance crane body, the balance crane body including a base plate (100), a column (110) mounted on the top of the base plate (100), the balance crane body including a telescopic boom module, characterized in that, The telescopic arm module includes: Telescopic housing (111), the telescopic housing (111) is mounted on the column (110); Telescopic component (112), which is movably installed inside the telescopic housing (111); Two fixed pulleys (113) are installed on the top and one side of the column (110), respectively. A motor (114) is mounted on one side of the top of the base plate (100), and a rotating disk is mounted on the motor (114); The steel cable (115) is fixedly connected at one end to the rotating disk of the motor (114), and at the other end to one side of the top of the telescopic component (112). The steel cable (115) is also connected to two fixed pulleys (113). Two hydraulic telescopic rods (119) are provided. The hydraulic telescopic rods (119) are fixedly installed on the front and rear sides of the telescopic housing (111) respectively. The telescopic part of the hydraulic telescopic rod (119) is connected to the front and rear sides of the telescopic component (112) respectively.

2. The telescopic boom structure of a balance crane according to claim 1, characterized in that: A diagonal support rod (116) is movably installed on one side of the column (110) via a hinge, and the end of the diagonal support rod (116) is movably connected to the bottom end of the telescopic component (112) via a pivot.

3. The telescopic boom structure of a balance crane according to claim 1, characterized in that: The telescopic outer shell (111) is fixedly installed with slide rails (117) at both the bottom and top. The telescopic component (112) is provided with sliders at both the bottom and top. The sliders are slidably installed on the slide rails (117).

4. The telescopic boom structure of a balance crane according to claim 1, characterized in that: An installation plate (118) is fixedly installed on one side of the top of the telescopic component (112). A ball groove is opened at the top of the installation plate (118), and a spherical rotating shaft is provided inside the ball groove. The spherical rotating shaft is fixedly connected to one end of the steel cable (115).

5. The telescopic boom structure of a balance crane according to claim 1, characterized in that: The telescopic component (112) has grooves on both the front and rear sides. The telescopic outer shell (111) has two sets of pressing rollers (120) movably installed on both the front and rear sides. The pressing rollers (120) are in contact with the grooves of the telescopic component (112). The pressing rollers (120) are each equipped with a spring telescopic rod (121). The spring telescopic rods (121) are fixedly connected to the inner wall of the telescopic outer shell (111).

6. The telescopic boom structure of a balance crane according to claim 1, characterized in that: The outer surfaces of both the telescopic outer shell (111) and the telescopic component (112) are covered with a composite reinforcing layer.

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