Buffering and damping structure for protecting alloy teeth against drill jumping
By designing a buffer shock absorbing structure in the gear drill bit, the spring groove and shock-transmitting steel balls reduce the impact of the drill bit on the alloy, the jumping problem of the gear drill bit during rolling and scraping is solved, and the stability of the drill bit is improved. Service life.
Patent Information
- Application Number
- CN202421235802.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The wheel drill bit is prone to jump when rolling the scraping plastic mudstone formation, resulting in breaking the alloy teeth and deflecting the wheel, which in turn leads to bearing wear and drill bit failure.
Design a buffering and shock-absorbing structure, including a tooth-pin bearing and a tooth-pin, which is connected by a locking steel ball, and a spring groove is installed on the tooth-pin bearing to install a shock-absorbing spring and a shock-driven steel ball. The shock-driven steel ball is placed on the tooth The runway is used to slide between the palm bearing and the inner bore of the gear to reduce the impact of the drill jump on the alloy.
It effectively reduces the impact of the drill bit, improves the service life, prevents the wheel deflection and bearing wear, and extends the service life of the wheel bit.
Smart Images
Figure CN222253830U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of roller drill bits, and in particular relates to a buffering and shock-absorbing structure for protecting alloy teeth from drill jumping. Background Art
[0002] When a roller drill bit encounters a stratum containing plastic mudstone during operation, it will jump during the rolling and scraping process, which will inevitably have a certain impact on the rotating roller. In severe cases, the alloy teeth will break, thus losing its aggressiveness. Moreover, roller jumping may cause the roller's rotation center and the palm bearing center to be not on the same center line, thereby causing the roller to deflect. There is no longer a gap between the inner hole of the roller and the palm bearing. During continued rotation, the bearing will continue to wear. Further analysis of the roller drill bit's roller falling into the well shows that in most cases, the roller drill bit falling into the well is due to the deformation of the steel ball runway in the inner hole of the roller, the crushing of the steel ball, and the failure of the locking system, causing the roller to fall into the well. Therefore, it is urgent to improve this part of the structure to prevent the roller from failing. Utility Model Content
[0003] The utility model aims to provide a buffering and shock-absorbing structure for protecting alloy teeth from drill jumping, so as to solve the problems existing in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a buffering and shock-absorbing structure for protecting alloy teeth from drill jumping, comprising a tooth palm bearing and a gear installed on the upper part thereof, the tooth palm bearing and the gear being connected together by a locking steel ball, the tooth palm bearing being provided with a spring groove, a shock-absorbing spring being installed in the spring groove, a shock-transmitting steel ball being installed on the outer side of the shock-absorbing spring, the shock-transmitting steel ball being placed between the inner holes of the tooth palm bearing and the gear, and slidingly cooperating with the two.
[0005] Preferably, a raceway is provided on the inner hole of the gear wheel to cooperate with the vibration-transmitting steel ball.
[0006] Preferably, the spring grooves are at least in two rows, upper and lower, distributed around the circumference of the toothed palm bearing.
[0007] Preferably, the spring groove is located below the locking steel ball.
[0008] Preferably, the spring groove is located above the locking steel ball.
[0009] Preferably, the spring grooves are located at the upper and lower sides of the locking steel ball.
[0010] The beneficial effects of the utility model are as follows: the device has a simple structure, and when the cone shaft hole is sleeved on the cone palm shaft to form a bearing system, the shock-absorbing spring and the shock-transmitting steel ball in the groove take effect when the drill bit is impacted, which can effectively reduce the impact of the drill jumping on the alloy and greatly improve the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0012] In the description of the present disclosure, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.
[0013] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified, "plurality" means two or more.
[0014] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0015] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments.
[0016] like Figure 1 As shown, a buffering and shock-absorbing structure for protecting alloy teeth from drill jumping includes a tooth palm bearing and a gear wheel installed on the upper part thereof, the tooth palm bearing and the gear wheel are connected together by a locking steel ball, the tooth palm bearing is provided with a spring groove 2, a shock-absorbing spring 3 is installed in the spring groove, a shock-transmitting steel ball 4 is installed on the outer side of the shock-absorbing spring, and the shock-transmitting steel ball is placed between the tooth palm bearing and the inner hole of the gear wheel, and slides with the two. By providing the shock-absorbing spring and the shock-transmitting steel ball, the gear wheel can always rotate around the tooth palm bearing, which can effectively prevent the gear wheel from deflecting, and the gap between the inner hole of the gear wheel and the tooth palm bearing is always consistent, which can effectively prevent the bearing from wearing during rotation.
[0017] In order to make the vibration-transmitting steel ball always run in its own track, a runway 1 matching with the vibration-transmitting steel ball is provided on the inner hole of the gear. The runway is a semi-groove structure, which can wrap the vibration-transmitting steel ball, and lubricating grease is applied inside the runway.
[0018] Furthermore, in order to further improve the stability of the gear, the spring grooves are at least in two rows, one above the other, distributed around the circumference of the gear bearing. Figure 1 As shown, the device uses two rows or three rows, which can be set according to the size of the cone. The position of the spring groove can also be designed by yourself. In this device, the spring grooves are all located below the locking steel ball. It can also be above the locking steel ball, or one row can be above the locking steel ball and one row can be below the locking steel ball. When the cone shaft hole is set on the tooth palm shaft to form a bearing system, the shock-absorbing spring and the shock-transmitting steel ball in the groove work when the drill bit is impacted, reducing the impact of the drill jumping on the alloy.
[0019] After welding the wear-resistant alloy of the toothed palm bearing, drill a spring groove in the toothed palm bearing to place the shock-absorbing spring (the radius of the spring groove is determined by the size of the toothed palm bearing to select a suitable shock-absorbing spring and shock-transmitting steel ball, and the size of the shock-transmitting steel ball), and machine a runway matching the size of the steel ball on the contact surface of the large shaft of the inner hole of the gear.
[0020] When assembling the tooth palm of the gear, first put the shock-absorbing spring into the spring groove processed in the tooth palm bearing, and then put the shock-transmitting steel ball into the spring groove, making sure that the steel ball does not fall completely into the spring groove after placement, and the exposed part of the hole can contact the track of the inner hole of the pressure wheel, and then apply high temperature and high pressure resistant grease to the track of the inner hole of the gear, and then put the gear on the tooth palm bearing to ensure that the shock-transmitting steel ball is stuck in the track. The subsequent installation steps are the same as other drill bit assembly methods.
[0021] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A buffering and shock absorbing structure for protecting alloy teeth from drill jumping, comprising a tooth palm bearing and a cone mounted on the upper part thereof, wherein the tooth palm bearing and the cone are connected together by a locking steel ball, characterized in that: The tooth palm bearing is provided with a spring groove, a shock-absorbing spring is installed in the spring groove, a shock-transmitting steel ball is installed on the outer side of the shock-absorbing spring, and the shock-transmitting steel ball is placed between the tooth palm bearing and the inner hole of the gear, and slides with the two.
2. The buffering and shock absorbing structure for protecting alloy teeth from drill jumping according to claim 1 is characterized in that: A raceway matched with the vibration-transmitting steel ball is arranged on the inner hole of the gear.
3. The buffering and shock absorbing structure for protecting alloy teeth from drill jumping according to claim 1 is characterized in that: The spring grooves are at least in two rows, upper and lower, distributed around the circumference of the toothed palm bearing.
4. The buffering and shock absorbing structure for protecting alloy teeth from drill jumping according to claim 1 is characterized in that: The spring groove is located below the locking steel ball.
5. The buffering and shock absorbing structure for protecting alloy teeth from drill jumping according to claim 1 is characterized in that: The spring groove is located above the locking steel ball.
6. The buffering and shock absorbing structure for protecting alloy teeth from drill jumping according to claim 1 is characterized in that: The spring grooves are located at the upper and lower sides of the locking steel ball.