Self-correcting spring cylinder balance mechanism for crane pipe

Abstract

The utility model relates to the technical field of fluid loading and unloading equipment, in particular to a self-correcting spring cylinder balance mechanism for a crane pipe, which aims at solving the problem that a spring cylinder of the crane pipe in the prior art is easy to deviate when being mounted, and specifically comprises a rotary joint arranged between an inner arm of the crane pipe and an outer arm of the crane pipe, a balance seat is fixedly installed on the rotating connector, a spring cylinder is arranged on one side of the crane pipe outer arm in parallel, a cylinder rod of the spring cylinder is movably connected to the balance seat through a connecting plate, and a bearing frame matched with a cylinder barrel of the spring cylinder is fixedly installed on the crane pipe outer arm. A compensation sleeve used for compensating the installation deflection angle of the spring cylinder is arranged between the bearing frame and the cylinder barrel. The compensation sleeve is arranged between the cylinder barrel and the U-shaped bracket, it is ensured that the cylinder rod of the spring cylinder is concentric with the cylinder barrel, it is ensured that the cylinder rod does not rub with the cylinder barrel to generate extra force in the using process of the spring cylinder, and therefore the service life of the spring cylinder is prolonged, and the balance effect of the spring cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid loading and unloading equipment, in particular to a self-correcting spring cylinder balancing mechanism for a crane pipe. Background Art

[0002] With the rapid development of the petrochemical industry, the loading and unloading of oil, oil derivatives, and chemical raw materials are more dependent on cranes. In order to ensure the dynamic balance of the crane's outer arm and its extension, and to save the physical strength of the loading and unloading workers during the use of the crane, a spring balance system is installed at the rotating joint of the outer arm and the inner arm at the beginning of the crane's design, so as to ensure that the crane's outer arm and its extension are in a balanced state at any position.

[0003] After the spring cylinder balancing system currently in use is installed, due to manufacturing errors, the spring cylinder balancing system is prone to cylinder deviation after installation, that is, after the spring cylinder is installed, the center line of the cylinder barrel is difficult to be parallel to the center line of the outer arm of the crane tube, resulting in uneven force on the spring cylinder support ears. The cylinder rod of the spring cylinder will stick to one side of the cylinder barrel mouth, causing friction during movement. Long-term use will cause serious wear of the cylinder barrel, thereby affecting its balancing performance and service life. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a self-correcting spring cylinder balancing mechanism for a crane pipe which can effectively prevent the spring cylinder from deflecting in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-correcting spring cylinder balancing mechanism for a crane pipe comprises a rotating joint arranged between an inner arm of the crane pipe and an outer arm of the crane pipe, a balancing seat is fixedly mounted on the rotating joint, a spring cylinder is arranged in parallel on one side of the outer arm of the crane pipe, and a cylinder rod of the spring cylinder is movably connected to the balancing seat through a connecting plate, and the characteristics are:

[0007] A support bracket matched with the cylinder barrel of the spring cylinder is fixedly mounted on the outer arm of the crane tube, and a compensation sleeve for compensating the installation angle of the spring cylinder is arranged between the support bracket and the cylinder barrel;

[0008] First ears are symmetrically arranged on the left and right sides of the compensation sleeve, and a first limiting groove matching with the first ears is correspondingly opened on the support bracket. The compensation sleeve is hinged on the support bracket through the first ears and can deflect up and down along the hinge;

[0009] Second ears are symmetrically arranged on the upper and lower sides of the cylinder, and a second limiting groove matching with the second ears is correspondingly opened on the compensation sleeve. The cylinder is hinged in the compensation sleeve through the second ears and can deflect left and right along the hinge.

[0010] The technical problem to be solved by the utility model can be further achieved through the following steps: the supporting bracket includes a transverse support rod fixedly installed on the outer arm of the crane tube, a U-shaped bracket is provided above the transverse support rod, the U-shaped bracket and the transverse support rod are fixedly connected as a whole through a vertically arranged connecting rod, and the first limit groove is symmetrically opened on the vertical section of the U-shaped bracket.

[0011] The technical problem to be solved by the utility model can be further achieved through the following steps: the first limiting groove and the second limiting groove are both strip grooves opened at the rear.

[0012] The technical problem to be solved by the utility model can be further achieved through the following steps: the cross section of the compensating sleeve is circular or rectangular.

[0013] The technical problem to be solved by the utility model can be further achieved by the following steps: the maximum left-right deflection angle of the cylinder in the compensation sleeve is 10-15°.

[0014] The technical problem to be solved by the utility model can be further achieved through the following steps: a long waist-shaped adjustment groove is provided on the balance seat, one end of the connecting plate is installed on the adjustment groove by bolts, and the other end of the connecting plate is hinged to one end of the cylinder rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by arranging a compensating sleeve between the cylinder barrel and the U-shaped bracket, if the center line of the cylinder barrel and the center line of the outer arm of the crane tube are not parallel during the installation process, the compensating sleeve can compensate for the deviation angle, ensure that the cylinder rod of the spring cylinder is concentric with the cylinder barrel, and ensure that the cylinder rod of the spring cylinder does not generate additional force due to friction with the cylinder barrel during use, thereby extending the service life of the spring cylinder and the balancing effect of the spring cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the utility model;

[0018] Figure 3 It is a side view schematic diagram of the utility model;

[0019] In the figure: 1-rotating joint; 2-balancing seat; 3-spring cylinder; 31-cylinder rod; 32-cylinder barrel; 4-support bracket; 41-lateral support rod; 42-U-shaped bracket; 5-compensating sleeve; 6-first support ear; 7-first limiting groove; 8-second support ear; 9-second limiting groove; 10-adjusting groove; 11-crane tube inner arm; 12-crane tube outer arm; 13-connecting plate. DETAILED DESCRIPTION

[0020] The specific technical solutions of the present invention are further described below so that those skilled in the art can further understand the present invention, but it does not constitute a limitation on the rights thereof.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0022] Reference Figure 1-3 A self-correcting spring cylinder balancing mechanism for a crane pipe comprises a rotary joint 1 arranged between a crane pipe inner arm 11 and a crane pipe outer arm 12, a balancing seat 2 is fixedly mounted on the rotary joint 1, a spring cylinder 3 is arranged parallel to one side of the crane pipe outer arm 12, and a cylinder rod 31 of the spring cylinder 3 is movably connected to the balancing seat 2 through a connecting plate 13,

[0023] A support bracket 4 matching with the cylinder barrel 32 of the spring cylinder 3 is fixedly mounted on the outer arm 12 of the crane tube, and a compensation sleeve 5 for compensating the installation angle of the spring cylinder 3 is arranged between the support bracket 4 and the cylinder barrel 32;

[0024] First ears 6 are symmetrically fixed and welded on the left and right sides of the compensation sleeve 5, and a first limiting groove 7 matching with the first ears 6 is correspondingly opened on the support bracket 4. The compensation sleeve 5 is hinged on the support bracket 4 through the first ears 6 and can deflect up and down along the hinge;

[0025] Second ears 8 are symmetrically fixed and welded on the upper and lower sides of the cylinder 32, and a second limiting groove 9 matching the second ears 8 is correspondingly opened on the compensation sleeve 5. The cylinder 32 is hinged in the compensation sleeve 5 through the second ears 8 and can deflect left and right along the hinge.

[0026] The support bracket 4 includes a transverse support rod 41 fixedly mounted on the crane tube outer arm 12, and a U-shaped bracket 42 is provided above the transverse support rod 41. The U-shaped bracket 42 and the transverse support rod 41 are fixedly connected as a whole via a vertically arranged connecting rod, and the first limiting groove 7 is symmetrically opened on the vertical section of the U-shaped bracket 42.

[0027] The first limiting groove 7 and the second limiting groove 9 are both strip-shaped grooves opened at the rear to facilitate installation.

[0028] The cross section of the compensating sleeve 5 is circular or rectangular.

[0029] The maximum left-right deflection angle of the cylinder 32 in the compensation sleeve 5 is 10-15°.

[0030] The balancing seat 2 is provided with a long waist-shaped positioning groove 10 , one end of the connecting plate 13 is mounted on the positioning groove 10 by bolts, and the other end of the connecting plate 13 is hinged to one end of the cylinder rod 31 .

[0031] Working principle: The utility model is a self-correcting spring cylinder balancing mechanism for a crane pipe. During installation, the cylinder rod 31 of the spring cylinder 3 is first installed together with the connecting plate 13 through bolts, and then the connecting plate 13 is fixed on the balancing seat 2, and the balancing seat 2 is installed on the rotating joint 1 through the hexagon socket screw, and then the second ear 8 on the cylinder barrel 32 of the spring cylinder 3 is installed in the second limiting groove 9 of the compensation sleeve 5, and the first ear 6 on the compensation sleeve 5 is installed in the first limiting groove 7 of the bracket U-shaped bracket 42. During the installation process, the compression amount of the spring in the cylinder barrel 32 is adjusted to ensure that the force balance between the crane pipe outer arm 12 and its connecting parts and the spring is ensured, thereby ensuring that the crane pipe outer arm 12 and its connecting parts are always in a balanced state. During the installation process, the compensation sleeve 5 can allow the cylinder barrel 32 to deflect inside it, thereby compensating for the installation angle and ensuring that the cylinder rod 31 of the spring cylinder 3 is concentric with the cylinder barrel 32, so that the cylinder rod 31 of the spring cylinder 3 does not generate additional force due to friction with the cylinder barrel 32 during use of the spring cylinder 3, thereby extending the service life of the spring cylinder 3 and the balancing effect of the spring cylinder 3.

[0032] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A self-correcting spring cylinder balancing mechanism for a crane pipe, comprising a rotating joint arranged between the crane pipe inner arm and the crane pipe outer arm, a balancing seat fixedly mounted on the rotating joint, a spring cylinder arranged parallel to one side of the crane pipe outer arm, a cylinder rod of the spring cylinder being movably connected to the balancing seat through a connecting plate, characterized in that: A support bracket matched with the cylinder barrel of the spring cylinder is fixedly mounted on the outer arm of the crane tube, and a compensation sleeve for compensating the installation angle of the spring cylinder is arranged between the support bracket and the cylinder barrel; First ears are symmetrically arranged on the left and right sides of the compensation sleeve, and a first limiting groove matching with the first ears is correspondingly opened on the support bracket. The compensation sleeve is hinged on the support bracket through the first ears and can deflect up and down along the hinge; Second ears are symmetrically arranged on the upper and lower sides of the cylinder, and a second limiting groove matching with the second ears is correspondingly opened on the compensation sleeve. The cylinder is hinged in the compensation sleeve through the second ears and can deflect left and right along the hinge.

2. The self-correcting spring cylinder balancing mechanism for a crane pipe according to claim 1 is characterized in that: The support bracket includes a transverse support rod fixedly installed on the outer arm of the crane tube, a U-shaped bracket is provided above the transverse support rod, the U-shaped bracket and the transverse support rod are fixedly connected as a whole through a vertically arranged connecting rod, and the first limiting groove is symmetrically opened on the vertical section of the U-shaped bracket.

3. The self-correcting spring cylinder balancing mechanism for a crane pipe according to claim 1 is characterized in that: The first limiting groove and the second limiting groove are both strip-shaped grooves that are open at the rear.

4. The self-correcting spring cylinder balancing mechanism for a crane pipe according to claim 1 is characterized in that: The cross section of the compensating sleeve is circular or rectangular.

5. The self-correcting spring cylinder balancing mechanism for a crane pipe according to claim 1 is characterized in that: The maximum left-right deflection angle of the cylinder in the compensation sleeve is 10-15°.

6. The self-correcting spring cylinder balancing mechanism for a crane pipe according to claim 1 is characterized in that: The balancing seat is provided with a long waist-shaped adjustment groove, one end of the connecting plate is mounted on the adjustment groove by bolts, and the other end of the connecting plate is hinged to one end of the cylinder rod.

Images