CN204621504U - A kind of hydraulic pressure pin inserting-drawing mechanism - Google Patents

Abstract

The utility model describes a kind of hydraulic pressure pin inserting-drawing mechanism, is applicable to installation and the dismounting of multiple large the bearing pin of gantry crane, it is characterized in that: base, hydraulic jack, stator, connecting rod, three contiguous blocks and adapter sleeve; Base is fixedly connected with the bearing pin support of large part bearing pin by bolt of lower base, hydraulic jack is fixed on base for fitted bolt by stator, connecting rod comprises long whorl brace rod and short thread connecting rod, be connected with adapter sleeve by contiguous block between length whorl brace rod, connecting rod two ends connect the grooved piston bar of large part bearing pin and hydraulic jack respectively, make large part bearing pin, long whorl brace rod, short thread connecting rod, grooved piston bar on the same axis; This mechanism operation is convenient, and can use the existing power source of crane self, work that just can be more steady, safe under not needing additionally to provide power source situation.

Description

A hydraulic plugging pin mechanism

technical field

The utility model relates to the technical field of installing and removing pin shafts, in particular to a hydraulic plugging-out pin mechanism suitable for installing and removing various large pin shafts of gantry cranes.

Background technique

At present, some parts of the existing MYQ 5000t gantry crane are connected by pin shafts. Some of the pin shafts are large in size and heavy in weight. The installation and connection pin shafts are usually installed by ordinary manpower and common tools. This installation method has the following disadvantages and deficiencies: ①The assembly of gantry crane components is mostly at high altitude, and the pin shaft is difficult to connect at high altitude, and there are many machines and equipment that need to be matched during assembly; ②Using common tools to knock on the pin installation will cause damage to the pin shaft body; ③Pin shaft Most of the installations are high from the ground and there is no reliable labor protection around, and there is a risk of falling from a height for personnel and tools; ④The installation position of the pin shaft is narrow or there is no installation station, resulting in long installation period and low efficiency.

Contents of the invention

The technical problem to be solved by the utility model is to provide a hydraulic plug-in pin mechanism suitable for the installation and removal of various large pin shafts of gantry cranes. The mechanism is easy to operate and can use the existing power source of the crane itself. It can work more smoothly and safely when an additional power source is required.

In order to achieve the purpose of solving the above technical problems, the utility model adopts the following technical solutions:

A hydraulic plug-in mechanism of the utility model is suitable for the installation and removal of various large pin shafts of gantry cranes. set;

The base is provided with a plurality of base bolts for fixedly connecting the base with the pin support of the large pin;

The fixing piece is a U-shaped metal piece with through holes at both ends, which is used to fix the hydraulic cylinder on the base with bolts;

The hydraulic cylinder includes a grooved piston rod, a reversing valve block, and a hydraulic control check valve; the front end of the grooved piston rod is provided with an expansion head, and the expansion head is provided with a groove that can accommodate the connecting block, and the grooved piston is realized through the groove. The card connection between the rod and the threaded connecting rod; the control of the hydraulic cylinder and the power source used can use the hydraulic control circuit used by the gantry crane itself; the reversing valve block is set on the hydraulic control circuit, and the reversing valve block An operating rod is provided to realize the two-way action of the grooved piston rod through the operating rod; the hydraulic control check valve is arranged at the oil port of the hydraulic cylinder for extending and retracting, and provides hydraulic locking function when the hydraulic cylinder is not working;

The connecting block is a rectangular block provided with a threaded through hole;

The connecting sleeve is a cylindrical structure with a U-shaped groove on the side, and a rectangular groove is arranged on the U-shaped groove;

The connecting rod includes a long threaded connecting rod and a short threaded connecting rod; one end of the long threaded connecting rod is connected to a large pin, and the other end is connected to connecting block one; the two ends of the short threaded connecting rod are respectively connected to connecting block two and connecting block three The connecting block one on the long threaded connecting rod and the connecting block two of the short threaded connecting rod are all arranged in the rectangular groove of the connecting sleeve, and the connecting block three of the short threaded connecting rod is arranged in the groove of the grooved piston rod, so that the large Pin shaft, long threaded connecting rod, short threaded connecting rod, and grooved piston rod are on the same axis.

Specifically: the small cavity oil port of the hydraulic cylinder is provided with a safety valve to avoid pressure overload, and the size of the small cavity oil port can meet the flow requirements at corresponding lifting and falling speeds.

Specifically: the hydraulic oil cylinder is provided with a joint, and the joint is matched with the hydraulic oil pipe joint of the hydraulic power station. This is to make the hydraulic plugging pin mechanism not only use the power provided by the hydraulic power station of the gantry crane, but also use the power provided by the portable hydraulic power station, so as to realize the purpose of use in various working environments.

Specifically: the long and short threaded connecting rods are round rods with threaded sections at both ends.

Concrete: when connecting the connecting block one on the long threaded connecting rod and the connecting block two of the short threaded connecting rod, the opening side of the connecting sleeve groove faces downward to prevent falling.

Specifically: the strength of the grooved piston rod can withstand the extra load caused by the misalignment of the pin shaft of the large piece and the hole of the pin shaft.

How to use: When in use, fix the hydraulic cylinder on the ground through the fixing piece on the base, install the connecting block on one end of the long threaded connecting rod, and install the connecting block on both ends of the short threaded connecting rod; use a crane to cooperate with the The hydraulic plug-in pin mechanism is fixed on the pin shaft bracket through the base bolts on the base; the hydraulic cylinder and the hydraulic control circuit or portable hydraulic power unit used for the crane itself are connected through oil pipes.

Pin shaft process: first install the other end of the long threaded connecting rod on the large pin shaft, then set the connecting block at one end of the short threaded connecting rod in the groove of the piston rod with groove, and install the other end of the short threaded connecting rod The connecting block on the connecting block and the long threaded connecting rod is put into the rectangular groove of the connecting sleeve, so that the large pin shaft, the long threaded connecting rod, the short threaded connecting rod, and the grooved piston rod are in the same axis direction and the pin shaft Align the pin hole; then start the hydraulic power package of the power source, realize the cylinder extension work of the hydraulic plugging pin mechanism by controlling the reversing valve of the hydraulic cylinder, and complete the installation of the pin shaft; then remove the connecting sleeve, and first cooperate with the crane to unload Lower the hydraulic plug-in pin mechanism with the short threaded connecting rod, and then take off the long threaded connecting rod connected with the large pin.

The process of pulling out the pin shaft: first set the other end of the long threaded connecting rod on the large pin shaft to be pulled out, then set the connecting block at one end of the short threaded connecting rod in the groove of the grooved piston rod, and put the short threaded The connecting block at the other end of the connecting rod and the connecting block on the long threaded connecting rod are put into the rectangular groove of the connecting sleeve, so that the large pin, the long threaded connecting rod, the short threaded connecting rod and the grooved piston rod are on the same axis direction; then start the hydraulic power package of the power source, realize the shrinking work of the hydraulic plug-in pin mechanism by controlling the reversing valve of the hydraulic cylinder, and complete the unloading of the pin shaft; then remove the connecting sleeve, first remove the long threaded connecting rod , and then cooperate with the crane to remove the hydraulic plug-in pin mechanism with a short threaded connecting rod.

These technical solutions, including improved technical solutions and further improved technical solutions, can also be combined or combined with each other to achieve better technical effects.

By adopting the above technical scheme, the utility model has the following beneficial effects:

1. A hydraulic plug-in and pull-out mechanism of the utility model has the advantages of small size, light weight, and convenient and flexible structural arrangement;

2. The motion inertia of the hydraulic plug-in mechanism is small, the reaction speed is fast, and it is easy to realize linear motion;

3. The hydraulic plug-in pin mechanism is easy to operate and control (starting, braking, reversing, etc.), and can realize fast two-way movement;

4. The hydraulic plug-in mechanism has the advantages of a variety of hydraulic power sources, and can be used in various situations;

5. The hydraulic plug-in pin mechanism connects the long and short threaded connecting rods through the connecting sleeve, so that the hydraulic cylinder is "flexible" to the force transmitted by the large pin shaft and protects the pin shaft from damage.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a structural schematic diagram of the base.

Fig. 3 is a structural schematic diagram of a hydraulic cylinder.

Fig. 4 is a structural schematic diagram of the connection between the long threaded connecting rod and the connecting block.

Fig. 5 is a schematic diagram of the structure of the connection sleeve.

In the figure: 1-base, 2-hydraulic cylinder, 3-piston rod with groove, 4-connecting rod, 5-connecting sleeve, 6-fixing piece, 7-base bolt, 8-connecting block.

Detailed ways

Below in conjunction with accompanying drawing this patent is further explained and illustrated. But the scope of protection of this patent is not limited to the specific implementation.

Example 1

As shown in the figure, a hydraulic plug-in and pull-out mechanism of this patent is suitable for the installation and removal of various large pin shafts of gantry cranes. 6. Connecting rod 4, connecting block 8 and connecting sleeve 5; the base 1 is provided with a plurality of base bolts 7, and the base bolts 7 are used to fix the pin bracket connecting the large pin; A U-shaped metal sheet with a through hole; the fixed sheet 6 cooperates with bolts to fix the hydraulic cylinder 2 on the base 1 .

The hydraulic cylinder 2 includes a grooved piston rod 3, the strength of which can withstand the extra load caused by the misalignment of the pin shaft and the hole of the pin shaft; the control of the hydraulic cylinder 2 and the power source used can take Use the hydraulic control circuit used by the gantry crane itself; the hydraulic cylinder 2 can realize the bidirectional action of the grooved piston rod 3 by manually operating the operating rod on the reversing valve block; the extension and contraction oil of the hydraulic cylinder 2 Each port is equipped with a hydraulic control check valve, which provides a hydraulic locking function when the hydraulic cylinder 2 is not working; the small cavity oil port of the hydraulic cylinder 2 is provided with a safety valve to avoid pressure overload, and the size of the small cavity oil port can meet the corresponding requirements. The flow requirements at the lifting and falling speeds; the hydraulic cylinder 2 is also provided with joints, which are matched with the hydraulic oil pipe joints of the hydraulic power station; The power can also use the power provided by the portable hydraulic power station to achieve the purpose of use in a variety of working environments.

The connecting block 8 is a rectangular block provided with a threaded through hole; the connecting sleeve 5 is a cylindrical structure with a U-shaped groove on the side, and the U-shaped groove is provided with a rectangular groove; the connecting rod 4 includes a long threaded connecting rod and a short thread Connecting rod; one end of the long threaded connecting rod is connected with a large pin, and the other end is connected with a connecting block 8; the two ends of the short threaded connecting rod are respectively connected with a connecting block 8; the connecting block 8 on the long threaded connecting rod is connected with the short thread The connecting block 8 at one end of the rod is all arranged in the rectangular groove of the connecting sleeve 5, and the connecting block 8 at the other end of the short threaded connecting rod is arranged in the groove of the grooved piston rod 3, so that the large pin, the long threaded connecting rod, The short threaded connecting rod and the grooved piston rod 3 are on the same axis; wherein, the long and short threaded connecting rods are round rods with threaded sections at both ends.

During use, the hydraulic cylinder 2 is fixed on the base 1 through the fixing plate 6 on the ground, and the connecting block 8 is installed on one end of the long threaded connecting rod, and the connecting block 8 is installed on both ends of the short threaded connecting rod; The hydraulic plug-in pin mechanism is fixed on the pin support through the base bolt 7 on the base 1; the hydraulic cylinder 2 is connected with the hydraulic control circuit or portable hydraulic power station used for the crane itself through oil pipes.

Pin shaft process: first install the other end of the long threaded connecting rod on a large pin shaft, then set the connecting block 8 at one end of the short threaded connecting rod in the groove of the piston rod 3 with grooves, and install the other end of the short threaded connecting rod The connecting block 8 at one end and the connecting block 8 on the long threaded connecting rod are put into the rectangular groove of the connecting sleeve 5, so that the large pin, the long threaded connecting rod, the short threaded connecting rod, and the grooved piston rod 3 are on the same axis. direction and the pin shaft is aligned with the pin shaft hole; then start the hydraulic power package of the power source, realize the cylinder extension work of the hydraulic plug-in pin mechanism by controlling the reversing valve of the hydraulic cylinder 2, and complete the installation of the pin shaft; then remove the Connecting sleeve 5, first cooperate crane to unload the hydraulic pressure plug-in pin mechanism that has short threaded connecting rod, then take off the long threaded connecting rod that is connected with large pin.

The process of pulling out the pin shaft: first set the other end of the long threaded connecting rod on the large pin shaft to be pulled out, then set the connecting block 8 at one end of the short threaded connecting rod in the groove of the grooved piston rod 3, and place the The connecting block 8 on the other end of the short threaded connecting rod and the connecting block 8 on the long threaded connecting rod are put into the rectangular groove of the connecting sleeve 5, so that the large pin, the long threaded connecting rod, the short threaded connecting rod, the grooved Piston rod 3 is in the same axis direction; then start the power source hydraulic power pack, realize the shrinking work of the hydraulic plug-in pin mechanism by controlling the reversing valve of hydraulic cylinder 2, and complete the unloading of the pin shaft; then remove the connecting sleeve 5. First remove the long threaded connecting rod, and then cooperate with the crane to remove the hydraulic plug-in mechanism with the short threaded connecting rod.

Example 2

The structure and operation are the same as those in Example 1. Some of the large pins of the existing MYQ 5000t gantry crane are plugged and pulled out. The technical parameters selected for the hydraulic cylinder 2 are: the pressure classification is E16MPa, the cylinder diameter is 63mm, and the rod The diameter is 32mm, and the maximum stroke is 400mm; the control and power source of the hydraulic cylinder 2 is the hydraulic control circuit used for the work of the CY10 cylinder of the MYQ 5000t gantry crane.

Claims (6)

1. A hydraulic plug-in pin mechanism, which is suitable for the installation and removal of various large pin shafts of gantry cranes, and is characterized in that it includes a base, a hydraulic cylinder, a fixed piece, a connecting rod, three connecting blocks and a connecting sleeve; The base is provided with a plurality of base bolts for fixedly connecting the base with the pin support of the large pin; The fixing piece is a U-shaped metal piece with through holes at both ends, which is used to fix the hydraulic cylinder on the base with bolts; The hydraulic cylinder includes a grooved piston rod, a reversing valve block, and a hydraulic control check valve; the front end of the grooved piston rod is provided with an expansion head, and the expansion head is provided with a groove that can accommodate the connecting block, and the grooved piston is realized through the groove. The card connection between the rod and the threaded connecting rod; the control of the hydraulic cylinder and the power source used can use the hydraulic control circuit used by the gantry crane itself; the reversing valve block is set on the hydraulic control circuit, and the reversing valve block An operating rod is provided to realize the two-way action of the grooved piston rod through the operating rod; the hydraulic control check valve is arranged at the oil port of the hydraulic cylinder for extending and retracting, and provides hydraulic locking function when the hydraulic cylinder is not working; The connecting block is a rectangular block provided with a threaded through hole; The connecting sleeve is a cylindrical structure with a U-shaped groove on the side, and a rectangular groove is arranged on the U-shaped groove; The connecting rod includes a long threaded connecting rod and a short threaded connecting rod; one end of the long threaded connecting rod is connected to a large pin, and the other end is connected to connecting block one; the two ends of the short threaded connecting rod are respectively connected to connecting block two and connecting block three The connecting block one on the long threaded connecting rod and the connecting block two of the short threaded connecting rod are all arranged in the rectangular groove of the connecting sleeve, and the connecting block three of the short threaded connecting rod is arranged in the groove of the grooved piston rod, so that the large Pin shaft, long threaded connecting rod, short threaded connecting rod, and grooved piston rod are on the same axis. 2. The hydraulic plugging pin mechanism according to claim 1, characterized in that: the small cavity oil port of the hydraulic cylinder is provided with a safety valve to avoid pressure overload, and the size of the small cavity oil port can meet the corresponding lifting and falling Flow requirements at speed. 3. The hydraulic plugging pin mechanism according to claim 1, characterized in that: the hydraulic cylinder is provided with a joint, and the joint is matched with the hydraulic oil pipe joint of the hydraulic power station. 4. The hydraulic plugging pin mechanism according to claim 1, characterized in that: said long and short threaded connecting rods are round rods with threaded sections at both ends. 5. The hydraulic plugging pin mechanism according to claim 1, characterized in that: when connecting the connecting block 1 on the long threaded connecting rod and the connecting block 2 on the short threaded connecting rod, the opening side of the groove of the connecting sleeve faces down to Anti-drop. 6. The hydraulic pin insertion mechanism according to claim 1, characterized in that: the strength of the grooved piston rod can withstand the extra load caused by the misalignment of the large pin shaft and the pin shaft hole.