Adjustable large-stroke high-bearing-capacity self-locking press-fitting supporting mechanism
By designing an adjustable large stroke high-load self-locking press-fitting support mechanism, and using a slope self-locking device and reset device, the problem of insufficient bearing capacity and adaptability in the prior art is solved, and the pressing effect with high precision, high stability and strong adaptability is achieved.
Patent Information
- Application Number
- CN202421902976.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing press-mounted support structures have shortcomings in bearing capacity and adaptability, especially the displacement stroke and large component force of the inclined top block bearing, which can easily lead to product deformation, while the threaded bearing affects accuracy and stability due to wear.
An adjustable large stroke high-load self-locking pressure-mounting support mechanism is designed, and a slope self-locking device and a reset device are used to drive the oblique block to form a self-locking state by driving the oblique block to move, and height adjustment and automatic reset are achieved through limit bolts and return springs.
It achieves high load-bearing and self-locking stability, and is highly adaptable, which can meet the assembly needs of multiple varieties and sizes, reduces investment and maintenance costs, and improves assembly accuracy.
Smart Images
Figure CN222986180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a supporting mechanism, in particular to an adjustable large-stroke high-load self-locking press-fitting supporting mechanism. Background Art
[0002] The inclined top block type load-bearing system can bear heavy loads, has high repeat positioning accuracy and good self-locking properties, but its small self-locking angle results in a small displacement stroke, and the component force acting on the product during operation is large, which can easily cause product deformation or position change, and cannot meet the requirements of multiple varieties of press-fitting and assembly of products with low strength.
[0003] Bolt-type load-bearing, after repeated use, the threads are easy to wear, which affects the product's press-fitting accuracy and stability; the product's adaptability is poor, and the height needs to be manually adjusted each time a different product is installed. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an adjustable large-stroke high-load self-locking press-fitting support mechanism, which can adjust the contact height, has low pressure on the product and stable self-locking.
[0005] The technical solution to the above technical problems is: an adjustable large-stroke high-load self-locking press-fitting support mechanism, including an inclined self-locking device and a reset device, the inclined self-locking device is connected to the reset device, the inclined self-locking device includes a support plate, a first inclined block, a second inclined block, a push rod and a cylinder, the second inclined block is placed on the support plate, the first inclined block is placed on the second inclined block, the push rod is placed on the first inclined block, one end of the second inclined block is connected to the cylinder, and the other end of the second inclined block is connected to the reset device. The second inclined block is pushed to move by the cylinder, the second inclined block pushes the first inclined block to move up, and the first inclined block pushes the push rod to move up to hold the product.
[0006] A further technical solution of the utility model is that the inclined surface self-locking device also includes a third inclined block and a fourth inclined block, the inclined surface of the third inclined block is in contact with the inclined surface of the fourth inclined block, the third inclined block is connected to the second inclined block, and the fourth inclined block is connected to the cylinder. The cylinder pushes the fourth inclined block to move upward, the fourth inclined block pushes the third inclined block to move horizontally, the third inclined block pushes the second inclined block to move horizontally, the second inclined block pushes the first inclined block to move upward, and the first inclined block pushes the push rod to move upward to hold the product.
[0007] The third inclined block is connected to the second inclined block through a second push rod.
[0008] The reset device comprises a reset spring, one end of which is fixed to the fixed plate, and the other end of which is connected to the second inclined block.
[0009] A limiting bolt is arranged above the fourth inclined block, and the limiting bolt is arranged on the fixing frame by a threaded connection mode. The distance between the limiting bolt and the fourth inclined block can be positioned by rotating the limiting bolt, so as to facilitate the limiting of different spacing requirements.
[0010] Due to the above technical solution, an adjustable large-stroke high-load self-locking press-fitting support mechanism of the present utility model has the following beneficial effects:
[0011] 1. Currently, existing press-fitting support structures all adopt fixed, threaded, or inclined top insert block types. Either they have insufficient bearing capacity, a small adaptable size range, poor wear resistance, or poor self-locking stability. The present utility model uses a structure with a cylinder driving an inclined plane and resetting for self-locking, with high load-bearing capacity and stable self-locking characteristics; the present utility model has strong adaptability, can meet the requirements of multiple varieties and multiple sizes of the same equipment, and can reduce investment and maintenance costs.
[0012] 2. The present utility model is adjusted through the inclined plane angle between the inclined blocks. The upward thimble component force generated when the corresponding inclined block translates is relatively smaller than the force generated by the cylinder pushing the inclined block. Therefore, the force exerted by the thimble on the workpiece is smaller, and the product is less likely to deform. Spring reset is adopted to automatically compensate for the wear between the sliding pairs, reduce the movement gap, reduce the stroke error, and reduce maintenance and replacement of accessories. The spring is used to keep the components of the self-locking mechanism under a certain pressure at all times, preventing a small amount of micro-movement of the self-locking components caused by sudden pressure during the working process, so as to improve the assembly accuracy.
[0013] Next, in combination with the specification drawings and specific embodiments, the technical features of an adjustable large-stroke high-load self-locking press-fitting support mechanism of the present utility model will be further described. Description of the Drawings
[0014] Figure 1 : Schematic structural diagram of an adjustable large-stroke high-load self-locking press-fitting support mechanism.
[0015] In the above drawings, the reference numerals are explained as follows:
[0016] 1 - First inclined block, 2 - Second inclined block, 3 - Third inclined block, 4 - Fourth inclined block, 5 - Support plate, 6 - Thimble, 7 - Cylinder, 8 - Second thimble, 9 - Return spring, 10 - Limit bolt, 11 - Pressure plate, 12 - Product. Detailed Embodiment
[0017] An adjustable large-stroke high-load self-locking pressing and supporting mechanism includes an inclined-plane self-locking device and a reset device. The inclined-plane self-locking device is connected to the reset device. The inclined-plane self-locking device includes a support plate, a first inclined block, a second inclined block, a push rod, and a cylinder. The second inclined block is placed on the support plate, the first inclined block is placed on the second inclined block, the inclined surface of the first inclined block is in contact connection with the inclined surface of the second inclined block, the push rod is placed on the first inclined block, one end of the second inclined block is connected to the cylinder, and the other end of the second inclined block is connected to the reset device. The second inclined block is pushed to move by the cylinder, the second inclined block pushes the first inclined block to move upward, and the first inclined block pushes the push rod to move upward to hold the product. Through the cooperation between the inclined planes, a self-locking state is formed, which can prevent the upper product from loosening and falling off. The inclined-plane self-locking device further includes a third inclined block and a fourth inclined block. The inclined surface of the third inclined block is in contact connection with the inclined surface of the fourth inclined block. The third inclined block is connected to the second inclined block, and the fourth inclined block is connected to the cylinder. The fourth inclined block is pushed to move upward by the cylinder, the fourth inclined block pushes the third inclined block to move horizontally, the third inclined block pushes the second inclined block to move horizontally, the second inclined block pushes the first inclined block to move upward, and the first inclined block pushes the push rod to move upward to hold the product. The third inclined block and the second inclined block are connected by a second push rod.
[0018] A limit bolt is provided above the fourth inclined block. The limit bolt is arranged on a fixed frame. The limit bolt is positioned on the fixed frame through threaded connection. The height of the limit can be adjusted through the limit bolt. That is, by rotating the limit bolt, the distance between the limit bolt and the fourth inclined block can be positioned, which is convenient for limiting different spacing requirements. The reset device includes a reset spring, a fixed plate, and a moving plate. One end of the reset spring is fixed on the fixed plate, the other end of the reset spring is connected to the second inclined block, both ends of the reset spring are respectively connected to the fixed plate and the moving plate, the fixed plate is fixed on the bracket, and the moving plate is connected to the second inclined block through a connecting rod. Whether in the locked state or the unlocked state, the spring is always in a compressed state. The inclined block 3 is placed on the inclined block 4 through pressure and friction.
[0019] Specifically, the third inclined block and the fourth inclined block form a set of inclined planes. The third inclined block and the fourth inclined block both adopt 6° inclined planes. The fourth inclined block 4 is driven upward by a φ32 cylinder. The two ends of the second ejector rod are respectively connected to the third inclined block 3 and the second inclined block 2. The second inclined block 2, the third inclined block 3 and the second ejector rod move leftward simultaneously. The moving distance can be controlled by an adjustable limit bolt above the fourth inclined block 4. The smaller 6° slope can generate self-locking to prevent the third inclined block 3, the second ejector rod and the second inclined block 2 from moving rightward. The second inclined block 2 and the first inclined block 1 form another set of inclined planes, and the inclined plane angles of the second inclined block 2 and the first inclined block 1 are 17°. When the second inclined block 2 moves leftward, under the action of the inclined plane, the first inclined block 1 moves upward, and the ejector rod pops up to contact the product in place. Since the inclined plane between the first inclined block 1 and the second inclined block 2 is relatively large, the upward component force formed is relatively small, and the product will not be deformed due to excessive force, affecting the assembly accuracy. At the same time, when the first inclined block 1 stops moving upward, the smaller inclined angle between the third inclined block 3 and the fourth inclined block 4 forms self-locking to prevent the first inclined block 1 from moving downward. When the product is repeatedly clamped, the cylinder is loosened, and the spring on the left side can accelerate the reset of the cylinder and the inclined blocks. Since the inclined plane angle between the first inclined block 1 and the second inclined block 2 is relatively large, the stroke of the ejector rod is relatively large, and the adaptability is relatively strong.
[0020] The ejector rod with a diameter of φ30 can achieve a high load-bearing capacity of more than 20T. The third inclined block 3 and the fourth inclined block 4 are not directly below the ejector rod, so they can be designed with larger sizes to have a larger contact area to ensure good self-locking. The inclined blocks are made of wear-resistant materials, and after heat treatment, their repeated press-fitting accuracy reaches within 0.02mm; the adaptability is relatively strong, and the automatic distance adjustment reaches 20mm, meeting the switching of various products and assembly errors. The purpose of self-adjustable high-load-bearing self-locking press-fitting support is achieved. The inclined plane angle between the first inclined block 1 and the second inclined block 2 is relatively large. Correspondingly, the upward component force of the ejector rod generated when the second inclined block 2 translates is relatively smaller than the force generated by the cylinder pushing the inclined block. Therefore, the force exerted by the ejector rod on the workpiece is relatively smaller, and the product is less likely to be deformed.
[0021] During use, the product reference plane is closely attached to the reference flat plate of the pressing tooling. The bearing (at the end with the impeller) is placed into the ejector rod hole, and then a φ32 cylinder is used. Start the cylinder to push the fourth inclined block 4 to drive the third inclined block 3 and the second inclined block 2 to translate leftward. The second inclined block 2 pushes the first inclined block 1 to move upward until it touches the impeller end of the bearing (the pressure of the two cylinders pressing the product is greater than the supporting force at the impeller end of the bearing, and the product design reference coincides with the tooling reference). After the fourth inclined block 4 and the third inclined block 3 stop moving, maintain the pressure of the cylinder. Then, the fourth inclined block 4 and the third inclined block 3 can be self-locked due to the inclined angle, preventing the first inclined block 1 and the second inclined block 2 from loosening. The reset spring on the left side is compressed when the second inclined block 2 moves leftward, and the spring pressure acts on the second inclined block 2 in the reverse direction, enabling the second inclined block 2 and the third inclined block 3 to maintain balance under a certain pressure, effectively preventing the self-locking failure caused by the sudden change of force during the press-fitting of the workpiece. After the product is press-fitted, release the cylinder, and the fourth inclined block 4 descends. Then, the reset spring on the left side of the second inclined block 2 causes the second inclined block 2 to move rightward, and the first inclined block 1 and the ejector rod return under the action of gravity. Due to the action of the reset spring, the third inclined block 3 and the fourth inclined block 4 will still be pressed tightly by a certain force to prevent loosening due to excessive clearance between the two. This structure, through the action of two groups of inclined planes, one group with a smaller angle forms self-locking and bears a larger force, and the other group with a larger angle forms a larger stroke but with a relatively smaller force, has less impact on the product quality and is suitable for the production of more products.
Claims
1. An adjustable long-stroke, high-load self-locking press-fit support mechanism, characterized in that: It includes an inclined plane self-locking device and a reset device, the inclined plane self-locking device is connected to the reset device, the inclined plane self-locking device includes a support plate, a first inclined block, a second inclined block, a push rod and a cylinder, the second inclined block is placed on the support plate, the first inclined block is placed on the second inclined block, the push rod is placed on the first inclined block, one end of the second inclined block is connected to the cylinder, and the other end of the second inclined block is connected to the reset device; The inclined plane self-locking device also includes a third inclined block and a fourth inclined block. The inclined plane of the third inclined block is in contact with the inclined plane of the fourth inclined block. The third inclined block is connected to the second inclined block, and the fourth inclined block is connected to the cylinder. The third inclined block is connected to the second inclined block through a second push rod.
2. The adjustable long-stroke, high-load, self-locking press-fit support mechanism according to claim 1, characterized in that: The reset device comprises a reset spring, one end of which is fixed on the fixed plate, and the other end of which is connected to the second inclined block.
3. The adjustable long-stroke, high-load, self-locking press-fit support mechanism according to claim 1, characterized in that: A limiting bolt is arranged above the fourth inclined block, and the limiting bolt is arranged on the fixing frame by means of a threaded connection.