Balancing weight structure for eccentric shaft machining

Abstract

The utility model discloses a balancing weight structure for processing an eccentric shaft, which comprises a U-shaped support frame, a clamping plate and a balancing weight, two ends of the balancing weight are provided with through holes penetrating through the U-shaped support frame, and the middle of the balancing weight is provided with a groove matched with the eccentric shaft to be processed. The balancing weight is arranged on a supporting rod at the upper end of the U-shaped supporting frame, an external thread is arranged on the supporting rod at the upper end of the U-shaped supporting frame, a through hole allowing the supporting rod to penetrate through is formed in the clamping plate, and the clamping plate is fixed to the supporting rod of the U-shaped supporting frame through a nut to form a closed structure. The eccentric shaft to be machined is sleeved with the balancing weight. The device is simple in structure, convenient and labor-saving to operate and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model belongs to large -scale shaft processing technical field, concretely relates to a counter weight block structure for eccentric shaft processing. BACKGROUND

[0002] Various large -scale shaft workpieces are needed on large -scale ships, in machining, the machining of large -scale shaft workpieces is the most important among shaft part machining, and currently mainly adopts large -scale numerical control lathe to carry out turning machining. For large -scale eccentric shaft or long shaft -like workpiece, vibration and noise are easily produced in the machining process, influence machining quality and efficiency, and one of the main reasons is that the center of gravity of eccentric part does not coincide with the rotation shaft, and unbalanced torque is produced, so the eccentric part needs to be counterweighted. The center of gravity is adjusted by changing the mass distribution of the part through counterweighting, so that the center of gravity coincides with the rotation shaft, reaches the balanced state, and avoids producing unbalanced torque.

[0003] The existing configuration structure, such as the counterweight structure of the eccentric shaft of a vibrating screen disclosed in CN207592250U, includes a fixed base and a fixed steel plate, the fixed base is provided as a semicircular ring, screw holes are arranged on the upper end surface of the fixed base, a screw hole one is arranged on the front right side of the fixed base, a screw post one is arranged in the screw hole one, a counterweight block is arranged in front of the screw hole one, a screw hole two is arranged in the center of the counterweight block, a nut is arranged on the front face of the counterweight block, and the screw post one is screwed into the screw hole one of the fixed base through the nut and the screw hole two of the counterweight block. The structure adjusts the counterweight of the eccentric shaft by the depth of the screw post, so that the eccentric shaft remains stable during the machining process. Since the counterweight block is heavy, the screw post operation of the structure is laborious, and the structure is not suitable for large -scale eccentric shaft heavy weight configuration. Moreover, the structure adjusts the counterweight by the depth of the screw post, and the adjustment range is limited, and the counterweight adjustment cannot be carried out for different eccentric shaft machining. SUMMARY

[0004] The utility model aims at the shortage of prior art, provides a kind of counter weight block structure for eccentric shaft processing, simple structure, easy and convenient to operate, labor saving, wide application range.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of counter weight block structure for eccentric shaft processing, including U type support frame, clamping plate and counter weight block, both ends of the counter weight block are equipped with through hole for being arranged on the U type support frame, recess for being cooperated with the eccentric shaft to be machined is arranged in the middle of the counter weight block, the counter weight block is arranged on the support rod of the upper end of the U type support frame, external thread is arranged on the support rod of the upper end of the U type support frame, the through hole for passing through support rod is opened in the clamping plate, the clamping plate is fixed on the support rod of the U type support frame by nut, forms closed structure, for being set on the eccentric shaft to be machined with counter weight block.

[0007] Further, the U-shaped support frame comprises a base and four support rods arranged on the base, the four support rods are arranged on two sides of the base, two support rods on each side of the base, the upper end of each support rod is provided with the external thread, and each external thread of the support rod is matched with a nut.

[0008] Further, the counterweight block is composed of n counterweight units, both ends of each counterweight unit are provided with through holes for being arranged on the U-shaped support frame, and the middle part of each counterweight unit is provided with a groove for cooperating with the eccentric shaft to be machined.

[0009] Further, the groove is a v-shaped groove.

[0010] The above technical scheme has the following beneficial effects:

[0011] The structure of the utility model is simple, the counterweight block is arranged on the U-shaped support frame, the vibration is reduced by the groove on the counterweight block and the eccentric shaft to be machined, the clamping plate is fixed on the U-shaped support frame by tightening the nut, the closed structure is formed by the U-shaped support frame and the clamping plate, and the matching block is directly sleeved on the eccentric shaft to be machined, which is simple and labor-saving, and is suitable for the counterweight setting of large eccentric shaft workpieces.

[0012] The U-shaped support frame comprises a base and four support rods arranged on the base, and the four support rods are more stable and firm in clamping the eccentric shaft to be machined.

[0013] The counterweight block is composed of n counterweight units, both ends of each counterweight unit are provided with through holes for being arranged on the U-shaped support frame, and the middle part of each counterweight unit is provided with a groove for cooperating with the eccentric shaft to be machined, the weight of the configuration block can be replaced and adjusted according to the counterweight requirement of different large eccentric shafts, so that the gravity center after counterweighting coincides with the rotating shaft, a balanced state is reached, and unbalanced torque is avoided.

[0014] The groove is a v-shaped groove, and different diameter eccentric shafts can be clamped.

[0015] The following further description is made in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the specific embodiment 1.

[0017] Fig. 2 It is a structural schematic view of the U-shaped support frame in the specific embodiment 1.

[0018] Fig. 3 The structure diagram of the counterweight unit in the specific embodiment 1.

[0019] In the drawing, 1 is a U-shaped support frame, 1-1 is a base, 1-2 is a support rod, 1-3 is an external thread, 2 is a clamping plate, 3 is a counterweight block, 3-1 is a V-shaped groove, 3-2 is a counterweight unit, and 4 is a nut. DETAILED DESCRIPTION Specific embodiment

[0021] Referring to Figs. 1 to 3 As shown in the figure, a counterweight block structure for eccentric shaft machining includes a U-shaped support frame 1, a clamping plate 2, and a counterweight block 3, all of which are metal materials.

[0022] An external thread is arranged on the upper end of the support rod 1-2 of the U-shaped support frame 1, the U-shaped support frame 1 includes a base 1-1 and four support rods 1-2 arranged on the base, the four support rods 1-2 are arranged on both sides of the base, and there are two support rods 1-2 on each side of the base, the upper end of each support rod 1-2 is provided with the external thread 1-3, and each support rod 1-2 is matched with a nut 4. Both ends of the counterweight block 3 are provided with through holes for being arranged on the U-shaped support frame, and the middle part of the counterweight block 3 is provided with a groove 3-1 for cooperating with the eccentric shaft to be machined, which is a V-shaped groove. The counterweight block 3 is arranged on the support rod 1-2 at the upper end of the U-shaped support frame 1, the counterweight block 3 is composed of n counterweight units 3-2, both ends of each counterweight unit 3-2 are provided with through holes for being arranged on the U-shaped support frame, and the middle part of each counterweight unit is provided with a groove for cooperating with the eccentric shaft to be machined. According to the different weight of the counterweight required by the eccentric shaft to be machined, the counterweight unit with corresponding weight is selected, so that the counterweight effect is better.

[0023] The clamping plate 2 is a rectangular plate, through holes for passing through the support rods are arranged on the clamping plate 2, the clamping plate 2 is fixed on the support rod 1-2 of the U-shaped support frame 1 through the nut 4, forming a closed structure, and is used for sleeving the counterweight block on the eccentric shaft to be machined.

Claims

1. A counterweight structure for eccentric shaft machining, characterized by: The application relates to a U-shaped supporting frame, a clamping plate and a counterweight block, both ends of the counterweight block are provided with through holes for being penetrated on the U-shaped supporting frame, the middle part of the counterweight block is provided with a groove for matching with a to-be-processed eccentric shaft, the counterweight block is arranged on a supporting rod at the upper end of the U-shaped supporting frame, the supporting rod at the upper end of the U-shaped supporting frame is provided with external threads, the clamping plate is provided with a through hole for penetrating the supporting rod, and the clamping plate is fixed on the supporting rod of the U-shaped supporting frame through a nut to form a closed structure for sleeving the counterweight block on the to-be-processed eccentric shaft.

2. The counterweight structure for eccentric shaft machining according to claim 1, characterized in that: The U-shaped supporting frame comprises a base and four supporting rods arranged on the base, the four supporting rods are arranged on both sides of the base, there are two supporting rods on each side of the base, the upper end of each supporting rod is provided with the external threads, and each supporting rod is matched with a nut.

3. The counterweight structure for eccentric shaft machining according to claim 1, characterized in that: The counterweight block is composed of n counterweight units, both ends of each counterweight unit are provided with through holes for being penetrated on the U-shaped supporting frame, and the middle part of each counterweight unit is provided with a groove for matching with a to-be-processed eccentric shaft.

4. The counterweight structure for eccentric shaft machining according to claim 1, characterized in that: The groove is a v-shaped groove.

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